# What is Energy? What is the relationship between energy and work?

 To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
Save this PDF as:

Size: px
Start display at page:

Download "What is Energy? What is the relationship between energy and work?"

## Transcription

1 What is Energy? What is the relationship between energy and work? Compare kinetic and potential energy What are the different types of energy? What is energy? Energy is the ability to do work. Great, but what is work? Work is done when a force (caused by energy) causes an object to move. Work = Force x distance Energy / Work Energy is needed to push a box across the floor. The box moving across the floor is an example of work. Energy is needed to hit a home run. The ball flying over the fence is an example of work. Two Basic Types of Energy Potential Energy = the energy of an object due to its position, shape, or condition Kinetic Energy = the energy of an object due to the object s motion Potential Energy Not all energy has to do with motion. Potential Energy is the energy an object has because of its position, shape, or condition. Objects with potential energy have the potential, or ability, to do work. Potential Energy Preview We will learn about three kinds of Potential Energy 1. Elastic Potential Energy 2. Chemical Potential Energy 3. Gravitational Potential Energy 1

2 Elastic Potential Energy The bow has energy because work has been done to change its shape. The energy of that work is turned into potential energy. When the arrow is released the potential energy of the bow and string will be transferred to the arrow, sending it flying through the air. Elastic Potential Energy Compressed, or squished, springs also have potential energy. A spring has energy because work has been done to change its shape. Just like the bow, the energy of that work is turned into potential energy. Elastic Potential Energy What about rubber bands and other things that stretch? Elastic Potential Energy How do we release the potential energy stored in springs? Chemical Energy Chemical Energy is the potential energy stored in substances. Calories = the chemical energy of food Batteries also have chemical energy It all depends upon the position and arrangement of the atoms in a compound. Chemical Potential Energy A battery has potential energy due to its condition. Potential Energy is stored in the chemicals within the battery. A fully charged battery has the potential to do work. Chemical Potential Energy Chemical Potential Energy can be found in food. Calories! Chemical Energy (cont d) Which type of food has the highest chemical potential energy (calories)? Gravitational Potential Energy When someone pushes you on a swing, you and the swing gain potential energy because work has been done to change your position. 2

3 You will have the most potential energy at the top, right before you begin your arc downward. Think about swinging. When will you have the most kinetic energy? Gravitational Potential Energy When you lift an object, you do work on it. You use a force that is against the force of gravity. When you do this you transfer energy to the object and give the object Gravitational Potential Energy. The amount of Gravitational Potential Energy an object has depends on the objects weight and height above the ground. Gravitational Potential Energy Books on a shelf have Gravitational Potential Energy. Which books have the most Gravitational Potential Energy? Why? Gravitational Potential Energy A man and his cell phone are on a ledge outside a very tall building. Which object (the man or his cell phone) has the most Gravitational Potential Energy? Why? How do we calculate Gravitational Potential Energy? GPE = Weight x Height Measure Weight in Newtons (N) Measure Height in meters (m) The unit for Gravitational Potential Energy = Newton meters (Nm) or Joules (J) Calculate the Gravitational Potential Energy GPE = Weight x Height Book #1 weighs 25 N on a shelf that is 2 meters off of the ground. Book #2 weighs 25 N and is on a shelf only 1 meter off of the ground. Which book has the most GPE? Calculate the Gravitational Potential Energy GPE = Weight x Height Man weighs 300 N on a ledge that is 200 meters off of the ground. 3

4 Cell Phone weighs 15 N and is on the same ledge. Which object has the most GPE? Practice Calculating GPE GPE = Weight x Height Tools: Metric tape measure, spring scale (be sure to use the Newton scale), calculator Units! Units! Units! ~ The units for GPE are Newton meters (Nm) or Joules (J) Potential Energy Review We learned about three kinds of Potential Energy 1. Elastic Potential Energy 2. Chemical Potential Energy 3. Gravitational Potential Energy Kinetic Energy Preview Kinetic Energy is the energy of motion or energy in use Any matter in motion has Kinetic Energy There are many forms of Kinetic Energy Some forms include: light, thermal, sound, electrical, and mechanical Mechanical Kinetic Energy Kinetic Energy = the energy of an object due to the object s motion All moving objects have kinetic energy Kinetic Energy depends on Mass and Speed Mechanical Kinetic Energy (cont d) KE = mass x speed x speed divided by 2 The greater the mass of a moving object, the more Kinetic Energy it has. The faster something is moving, the more Kinetic Energy it has, also. Mechanical Kinetic Energy Which animal has the bigger mass? 4

5 Which animal is able to move faster? Which animal has the greatest KE? KE = mass x speed 2 2 Calculate the Mechanical Kinetic Energy (KE) KE = mass x speed 2 2 Mass = 0.2 kg Speed = 2 meters/sec KE = 0.4 J Mechanical Kinetic Energy KE = mass x speed 2 2 Mass = 4000 kg Speed = 2 meters/sec (Note that the elephant is going the same speed as the mouse.) KE = 8000 J What effect does an increase of speed have on Mechanical Kinetic Energy? The green and yellow cars have the same mass (1,200 kg) The green car is traveling at a speed of 20 m/sec The yellow car is traveling at a speed of 30 m/sec Calculate their Kinetic Energies KE = mass x speed 2 2 Which car has the most KE? Green car s KE = 240,000 J Yellow car s KE = 540,000 J Speed has a greater effect on KE than mass because in the equation speed is squared. In other words, the faster an object is going... the more KE is has. Practice Calculating KE Use Joules (J) as the unit for Kinetic Energy 5

6 Tools: meter tape, stop watch, scale, calculator KE = mass x speed 2 2 How are Kinetic and Potential Energy Related? Law of Conservation of Energy Energy can not be created or destroyed It can be transformed, or changed, from one form to another Kinetic Energy can be transformed into Potential Energy or other types of Kinetic Energy, and vise versa. This can and does happen many times. The total amount of energy doesn t change. A book on a shelf ledge has potential energy. It has stored the energy that it took to lift it to the shelf. If the book is bumped and it falls, the potential energy changes to the kinetic energy of motion. When does the book have the most potential energy? When does the book have the most kinetic energy? Other Forms of Kinetic Energy Mechanical Thermal Energy or Heat Energy Electric Energy Sound or Acoustic Energy Light Energy 6

7 Radiant Energy Nuclear Energy Dynamic Mechanical Energy Imagine a juggler Sometime the objects have a lot of kinetic energy Sometimes the objects have a lot of potential energy Thermal Energy All matter is made up of atoms Atoms are in constant motion Thermal energy (heat) is all of the kinetic energy due to the random motion of atoms Thermal energy also depends upon the amount of atoms that are moving Solids The atoms in an ice cube vibrate in fixed positions and do not have a lot of kinetic energy. Liquids Atoms of water in a lake can move more freely and have more kinetic energy than atoms in ice do. Gas The atoms of water in steam move rapidly, so they have more energy than the particles in liquid water or ice do. Thermal Energy (cont d) Thermal energy depends upon the amount of atoms that are moving. Consider, a cup of tea and the water in a bath tub. Both are the same temperature. Which has more thermal energy???????? The water in the bathtub has more thermal energy. Why? Simply because it has more water molecules. 7

8 Conduction Conduction is the transfer of energy through matter from particle to particle. It is the transfer and distribution of heat energy from atom to atom within a substance. Conduction is most effective in solids-but it can happen in fluids. Conduction (cont d) For example, a spoon in a cup of hot soup becomes warmer because the heat from the soup is conducted along the spoon. Conduction (cont d) Have you ever noticed that metals tend to feel cold? Believe it or not, they are not colder! They only feel colder because they conduct heat away from your hand. You perceive the heat that is leaving your hand as cold. Conduction (cont d) Some items are conductors, they conduct heat well. Example: metal Some items are insulators, they DO NOT conduct heat well. Examples: fabric, wood, wool, and some plastic Think about it... What do we use a cooler for? What do we use a coffee mug for? Differences / Similarities? Convection Convection is the transfer of heat by the actual movement of the warmed matter. Heat leaves the coffee cup as the currents of steam and air rise. Convection is the transfer of heat energy in a gas or liquid by movement of currents. Convection (cont d) Convection is responsible for making macaroni rise and fall in a pot of heated water. The warmer portions of the water are less dense and therefore, they rise. Meanwhile, the cooler portions of the water fall because they are denser. 8

9 Electrical Energy Electrical Energy is the energy of moving electrons. Electricity is the flow of electrical power or charge. Electrical Energy (cont d) It is a secondary energy source which means that we get it from the conversion of other sources of energy, like coal, natural gas, oil, nuclear power and other natural sources, which are called primary sources. Electrical Energy (cont d) The energy sources we use to make electricity can be renewable or nonrenewable, but electricity itself is neither renewable or non-renewable. Two types of electricity: Static and Current Static electricity is usually caused when certain materials are rubbed against each other, like wool on plastic or the soles of your shoes on the carpet. It is the attraction of two objects because one has a positive charge and the other has a negative charge. Two types of electricity: Static and Current The flow of electrons is called an electric current Look familiar? Some items are conductors, they conduct electricity well. Example: metal Some items are insulators, they DO NOT conduct electricity well. Examples: fabric, wool, wool, and some plastic Semiconductors Some items are semiconductors. The ability of a semiconductor to conduct electrictiy is between the ability of a conductor and an insulator. Resistors Resistors resist the flow of electrons. They are really good at transforming electrical energy into other forms of kinetic energy (sound, light, heat). We find resistors in radios, light bulbs, and ovens. 9

10 Sound or Acoustic Energy Sound Energy is caused by an object s vibration. Sound is a type of energy made by vibrations. When any object vibrates, it causes movement in the air particles. These particles bump into the particles close to them, which makes them vibrate too causing them to bump into more air particles. This movement, called sound waves, keeps going until they run out of energy. If your ear is within range of the vibrations, you hear the sound. Sound Energy (cont d) Picture a stone thrown into a still body of water. The rings of waves expand indefinitely. The same is true with sound. Sound Energy (cont d) Irregular repeating sound waves create noise While regular repeating waves produce musical notes Sound Energy (cont d) When the vibrations are fast, you hear a high note. When the vibrations are slow, it creates a low note. Playing the Guitar Stretching a guitar string, stores potential energy in the string Letting it go causes the potential energy to be transformed into kinetic energy This makes the string vibrate Playing the Guitar (cont d) The vibrating string transfers some of this energy to the surrounding air The vibrating air travels to your ear When this energy reaches your ear, you hear the guitar Radiation Electromagnetic waves that directly transport ENERGY through space. Sunlight is a form of radiation that is radiated through space to our planet. The sun transfers heat through 93 million miles of space. The energy travels through nothingness! No matter required! 10

11 Radiant Energy Radiant energy is energy in the form of electromagnetic waves. Radiant energy can travel through a vacuum. Examples of radiant energy = visible light, infrared light, microwaves, radio waves, ultra violet light, X-rays, and gamma rays. Light Energy Light energy is produced by the vibrations of electrically charged particles. Unlike sound energy, the vibrations that transmit light energy do not need to be carried through matter. Light Energy (cont d) In fact, light energy can move through a vacuum (an area with no matter). Also known as visible light energy. Nuclear Energy Nuclear Energy is the energy that comes from changes in the nucleus of an atom. A lot of potential energy is stored in the nucleus of atoms When two nuclei join together, or when a nucleus splits apart, a lot of energy is released. This is nuclear energy. Nuclear Energy (cont d) Fusion = The joining of two nuclei. This happens on the sun. Fission = The splitting of a nuclei. Fission is used in nuclear power plants to generate electrical energy. Review Energy is the ability to do work Work is the transfer of energy Energy and Work are expressed in units of joules (J) Review (cont d) Kinetic Energy is energy of motion It depends on speed and mass Review (cont d) Potential Energy is energy of position, shape, or condition 11

12 Gravitational Potential Energy depends on weight and height Review (cont d) Energy exists in many forms Each form has its own characteristics Some of the forms we looked at were: mechanical, thermal, chemical, electrical, sound or acoustic, light, radiant, and nuclear energy 12

### What Is Energy? Energy and Work: Working Together. 124 Chapter 5 Energy and Energy Resources

1 What You Will Learn Explain the relationship between energy and work. Compare kinetic and potential energy. Describe the different forms of energy. Vocabulary energy kinetic energy potential energy mechanical

### AZ State Standards. Concept 3: Conservation of Energy and Increase in Disorder Understand ways that energy is conserved, stored, and transferred.

Forms of Energy AZ State Standards Concept 3: Conservation of Energy and Increase in Disorder Understand ways that energy is conserved, stored, and transferred. PO 1. Describe the following ways in which

### In science, energy is the ability to do work. Work is done when a force causes an

What is energy? In science, energy is the ability to do work. Work is done when a force causes an object to move in the direction of the force. Energy is expressed in units of joules (J). A joule is calculated

### Energy and Energy Transformations Test Review

Energy and Energy Transformations Test Review Completion: 1. Mass 13. Kinetic 2. Four 14. thermal 3. Kinetic 15. Thermal energy (heat) 4. Electromagnetic/Radiant 16. Thermal energy (heat) 5. Thermal 17.

### Preview of Period 2: Forms of Energy

Preview of Period 2: Forms of Energy 2.1 Forms of Energy How are forms of energy defined? 2.2 Energy Conversions What happens when energy is converted from one form into another form? 2.3 Efficiency of

### All energy can be in one of two forms: Potential energy (PE) or Kinetic energy (KE)

Energy All energy can be in one of two forms: Potential energy (PE) or Kinetic energy (KE) Potential energy is stored energy-- energy ready to go. Examples: A lawn mower filled with gasoline, a car on

### Unit 2 Lesson 3 Thermal Energy and Heat Essential Question: What is the relationship between heat and temperature?

Big Idea: Energy exits in different forms and can change from one form to another, but energy is always conserved. Unit 2 Lesson 3 Thermal Energy and Heat Essential Question: What is the relationship between

### Science Tutorial TEK 6.9C: Energy Forms & Conversions

Name: Teacher: Pd. Date: Science Tutorial TEK 6.9C: Energy Forms & Conversions TEK 6.9C: Demonstrate energy transformations such as energy in a flashlight battery changes from chemical energy to electrical

### Energy Test Study Guide

Name: Energy Test Study Guide (Test Dates: A Day May 5 th B Day May 6 th ) USE YOUR INTERACTIVE NOTEBOOK TO STUDY CLASSROOM ASSIGNMENTS, LABS, FORMATIVE ASSESSMENTS, AND HOMEWORK. ENERGY AND THE TWO MAIN

### Unit 2 Lesson 1 Introduction to Energy. Copyright Houghton Mifflin Harcourt Publishing Company

Get Energized! What are two types of energy? Energy is the ability to cause change. Energy takes many different forms and causes many different effects. There are two general types of energy: kinetic energy

### Forms of Energy. Freshman Seminar

Forms of Energy Freshman Seminar Energy Energy The ability & capacity to do work Energy can take many different forms Energy can be quantified Law of Conservation of energy In any change from one form

### Science Standard 3 Energy and Its Effects Grade Level Expectations

Science Standard 3 Energy and Its Effects Grade Level Expectations Science Standard 3 Energy and Its Effects The flow of energy drives processes of change in all biological, chemical, physical, and geological

### Forms of Energy. Energy can be transferred, or converted, from one form to another! Electrical Electromagnetic Nuclear. Mechanical Thermal Chemical

Forms of Energy Forms of Energy Mechanical Thermal Chemical Electrical Electromagnetic Nuclear Energy can be transferred, or converted, from one form to another! Mechanical Energy Energy associated with

### Chapter 2: Forms of Energy

Chapter 2: Forms of Energy Goals of Period 2 Section 2.1: To describe the forms of energy Section 2.2: To illustrate conversions from one form of energy to another Section 2.3 To describe energy storage

Energy What is Energy? Energy is the ability to do work. Any object that has energy has the ability to create force. Energy is one of the fundamental building blocks of our universe. Energy appears in

### Reading Comprehension Skills Preview the Book How to Read Diagrams Main Idea and Details Cause and Effect

TM Red Edition Grade 3 4 reading level Purple Edition Grade 4 5 reading level Objectives Define the science meaning of the word energy: the ability to make changes occur. Compare two main kinds of energy:

### Thermal Energy. Write down two things you do to make yourself feel warmer.

chapter 36 section 2 Heat Thermal Energy Before You Read Write down two things you do to make yourself feel warmer. What You ll Learn compare thermal energy and heat three ways heat moves what insulators

### Unit 2 Frayer Models

Unit 2 Frayer Models The energy of an object that is due to the object s motion. Can be transferred from one moving object to another. Moving a soccer ball. A football passing through the field goal post.

### Chapter 2: Forms of Energy

Chapter 2: Forms of Energy Goals of Period 2 Section 2.1: To describe the forms of energy Section 2.2: To illustrate conversions from one form of energy to another Section 2.3: To define the efficiency

### March 18, Forms of Energy. Energy Sources. Potential Energy. Kinetic Energy. Nuclear Energy. Electricity. Heat. Sound

Forms of Energy Energy Sources Potential Energy Kinetic Energy Nuclear Energy Electricity Heat Sound March 18, 2013 Do Now: How are energy and work related? Energy is the ability to do work; work is a

### ch 15 practice test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

ch 15 practice test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Work is a transfer of a. energy. c. mass. b. force. d. motion. 2. What

### Potential and Kinetic Energy

Potential and Kinetic Energy What is Energy? The ability to cause change Energy notes entry # 4 11/5 Potential Energy Kinetic Energy Definitions Dependent on Examples Forms of Potential Energy Definition

### Thermal Energy. Thermal Energy. Chemical Bonds. Chemical Bonds. Chemical Bonds. Chemical Bonds. Ordered motion doesn t contribute to thermal energy

Disordered Kinetic and potential energies of individual atoms Presence of thermal energy gives an object temperature Ordered motion doesn t contribute to thermal energy total kinetic energy - whole object

### Section 15.1 Energy and Its Forms (pages 446 452)

Section 15.1 and Its Forms (pages 446 452) This section describes how energy and work are related. It defines kinetic energy and potential energy, and gives examples for calculating these forms of energy.

### TEACHER BACKGROUND INFORMATION THERMAL ENERGY

TEACHER BACKGROUND INFORMATION THERMAL ENERGY In general, when an object performs work on another object, it does not transfer all of its energy to that object. Some of the energy is lost as heat due to

### Types of Energy. What is Energy? Forms of Energy

Types of Energy What is Energy? Energy is all around us. But what, exactly, is energy? Energy makes change possible. We use it to do things for us. It helps us heat our homes and move our cars. It allows

### Core Idea PS3. Energy. How is energy transferred and conserved?

Core Idea PS3 Energy How is energy transferred and conserved? interaction explain predict concept: the transfer of energy from one object or system of objects to another total energy defined system changes

### SIZE. Energy. Non-Mechanical Energy. Mechanical Energy. Part II. Examples of Non-Mechanical Energy. Examples of Mechanical Energy.

Energy Part II Non-Mechanical Energy Wait a minute if all energy is either kinetic or potential and TME = KE + PE then how can there possibly be such thing as non-mechanical energy!?!? Mechanical Energy

### What is energy? In this section...

What is energy? Energy is the power or ability to do work. It makes things change, it does things for us. Everything we do is connected to energy in one form or another. Inside our bodies energy makes

### HNRS 227 Fall 2008 Chapter 4. Do You Remember These? iclicker Question. iclicker Question. iclicker Question. iclicker Question

HNRS 227 Fall 2008 Chapter 4 Heat and Temperature presented by Prof. Geller Do You Remember These? Units of length, mass and time, and metric Prefixes Density and its units The Scientific Method Speed,

### Lesson Plan: Forms, States, and Conversions

Lesson Plan: Forms, States, and Conversions Concepts 1. can be neither created nor destroyed, but converted from one form to another. This can be represented as the first law of thermodynamics. 2. can

Table of Contents 0. Unit Challenge 1. Types of 2. Potential and Kinetic 3. Conduction, Convection, and Radiation 4. How Heat is Transferred 5. Specific Heat 6. Electricity 7. Waves 8. Technology of Transformation

### Energy comes in many flavors!

Forms of Energy Energy is Fun! Energy comes in many flavors! Kinetic Energy Potential Energy Thermal/heat Energy Chemical Energy Electrical Energy Electrochemical Energy Electromagnetic Radiation Energy

### PHYSICAL WORLD. Heat & Energy GOD S DESIGN. 4th Edition Debbie & Richard Lawrence

PHYSICAL WORLD Heat & Energy GOD S DESIGN 4th Edition Debbie & Richard Lawrence God s Design for the Physical World is a complete physical science curriculum for grades 3 8. The books in this series are

### Basic Forms of Energy:

Background Information: Energy can be defined in many different ways: the ability to do work, the ability to the change the properties of a material, or simply the ability to do something. Energy is a

### Temperature Scales. temperature scales Celsius Fahrenheit Kelvin

Ch. 10-11 Concept Ch. 10 #1, 3, 7, 8, 9, 11 Ch11, # 3, 6, 11 Problems Ch10 # 3, 5, 11, 17, 21, 24, 25, 29, 33, 37, 39, 43, 47, 59 Problems: CH 11 # 1, 2, 3a, 4, 5, 6, 9, 13, 15, 22, 25, 27, 28, 35 Temperature

Radiant Energy Definition: the energy of electromagnetic waves; this includes radio, microwave, infrared, visible, ultraviolet, x-ray, and gamma waves Solar panels Radiant Energy Examples of energy transformations:

### Energy The Word vs. The Physics Concept

ENERGY Energy The Word vs. The Physics Concept The word energy is used loosely As a commodity I paid my energy bill today Does energy come through pipes like water? As a mood or behavior He played with

### PS-6.2 Explain the factors that determine potential and kinetic energy and the transformation of one to the other.

PS-6.1 Explain how the law of conservation of energy applies to the transformation of various forms of energy (including mechanical energy, electrical energy, chemical energy, light energy, sound energy,

### Chapter 16 Heat Transfer

Chapter 16 Heat Transfer Conduction Convection Radiation John Suchocki demonstrates the low conductivity of red-hot coals with his bare feet. 1 Three different ways of heat transmission Heat transfers

### Chapter 18 Temperature, Heat, and the First Law of Thermodynamics. Problems: 8, 11, 13, 17, 21, 27, 29, 37, 39, 41, 47, 51, 57

Chapter 18 Temperature, Heat, and the First Law of Thermodynamics Problems: 8, 11, 13, 17, 21, 27, 29, 37, 39, 41, 47, 51, 57 Thermodynamics study and application of thermal energy temperature quantity

### Chapter 4: Transfer of Thermal Energy

Chapter 4: Transfer of Thermal Energy Goals of Period 4 Section 4.1: To define temperature and thermal energy Section 4.2: To discuss three methods of thermal energy transfer. Section 4.3: To describe

### Q1. Complete the boxes on the chart to show what happens to the energy from the Sun.

Q. Complete the boxes on the chart to show what happens to the energy from the Sun. (Total 3 marks) Q2. The diagram shows four identical pieces of aluminium. Each had been painted with a different type

### Name: Class: Date: 10. Some substances, when exposed to visible light, absorb more energy as heat than other substances absorb.

Name: Class: Date: ID: A PS Chapter 13 Review Modified True/False Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true. 1. In all cooling

### Textbook pp. 148-153

Textbook pp. 148-153 ENERGY is the ability to do WORK or cause change Name 2 things that ARE energy or that HAVE energy WORK is when a FORCE moves an object a FORCE is a push or a pull There are two main

### Chapter 10 Study Questions

Chapter 10 Study Questions Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Which of the following temperatures is the lowest? a. 100ºC c.

Name: Class: Date: Grade 11A Science Related Reading/Physics Conduction, Convention & Radiation Physics Gr11A Pre Reading Activity Using prior knowledge, write the definition for each vocabulary term.

### Student Study Guide: Energy Rules!

Student Study Guide: Energy Rules! Name: Class / Period: Instructions: Enter the term, its definition, or an example as indicated. Energy: energy the energy of an object or substance in movement; sometimes

### Introduction to Forms of Energy

FORMS OF ENERGY LESSON PLAN 2.1 Introduction to Forms of Energy This lesson is designed for 3rd 5th grade students in a variety of school settings (public, private, STEM schools, and home schools) in the

### Temperature and Energy. Temperature and Energy, continued. Visual Concept: Measuring Temperature. Temperature Scales. Temperature Scales, continued

Temperature and Energy What does temperature have to do with energy? The temperature of a substance is proportional to the average kinetic energy of the substance s s particles. temperature: a measure

### Unit Study Guide: Waves and Heat Transfer

Name Date Per Unit 8.4.1 Study Guide: Waves and Heat Transfer I Can Statements I Can Statements are the learning targets for each unit. By the time you take the test for this unit, you should be able to

### SAM Teachers Guide Heat and Temperature

SAM Teachers Guide Heat and Temperature Overview Students learn that temperature measures average kinetic energy, and heat is the transfer of energy from hot systems to cold systems. They consider what

### Unit 2: Energy Key Ideas:

Unit 2: Energy Key Ideas: 2.1 Observe, identify, and describe a variety of forms of energy: sound, mechanical, heat, electrical, and chemical 2.2 Identify the evidence for energy transformations and how

### Bounce! Name. Be very careful with the balls. Do not throw them DROP the balls as instructed in the procedure.

Bounce 1 Name Bounce! Be very careful with the balls. Do not throw them DROP the balls as instructed in the procedure. Background information: Energy causes things to happen. During the day, the sun gives

### Student Reader. Energy Systems UNIT 7. E5 Student Reader v. 8.0 Unit 7 Page 1 2012 KnowAtom TM

Student Reader UNIT 7 Energy Systems E5 Student Reader v. 8.0 Unit 7 Page 1 2012 KnowAtom TM Front Cover: The cover shows a photograph of a sled that is not in motion. The movement of a sled from one place

### Energy Transfer, PE, KE and Efficiency

ENERGY Part of our everyday lives: Energetic people Food that is full of energy High cost of electric energy Risks of nuclear energy Energy: An ability to accomplish change When anything happens in the

### XX. Introductory Physics, High School

XX. Introductory Physics, High School High School Introductory Physics Test The spring 2014 high school Introductory Physics test was based on learning standards in the Introductory Physics content strand

### Kinetic Molecular Theory. A theory is a collection of ideas that attempts to explain certain phenomena.

Kinetic Molecular Theory A theory is a collection of ideas that attempts to explain certain phenomena. A law is a statement of specific relationships or conditions in nature. After centuries of questioning

Lesson 1 Overhead 1 of 7 FORMS OF ENERGY All forms of energy fall under two categories KINETIC Kinetic energy is energy in motion POTENTIAL Potential energy is stored energy RADIANT ENERGY Radiant energy

### An automobile engine converts the chemical energy in gasoline mostly into heat and -

Thursday- Science Question of the Day 607.10.3 ecognize that nergy can be ransformed rom one type to nother. An automobile engine converts the chemical energy in gasoline mostly into heat and - A. nuclear

### Energy Test 1 Review Name:

Energy Test 1 Review Name: S8P2b. Explain the relationship between potential and kinetic energy. 1. Which of the following has the least potential energy? a. A car driving on the highway. b. A man on the

### Name Class Date. You do twice as much work. b. You lift two identical books one meter above the ground.

Exercises 9.1 Work (pages 145 146) 1. Circle the letter next to the correct mathematical equation for work. work = force distance work = distance force c. work = force distance d. work = force distance

### What are the different forms of energy?

Lesson 1 Heat Lesson 2 Sound Lesson 3 Light Lesson 4 Electricity What are the different forms of energy? Lesson 5 Magnetism heat temperature conduction convection radiation thermal conductivity What is

### Preview of Period 5: Thermal Energy, the Microscopic Picture

Preview of Period 5: Thermal Energy, the Microscopic Picture 5.1 Temperature and Molecular Motion What is evaporative cooling? 5.2 Temperature and Phase Changes How much energy is required for a phase

### SERVANTHOOD - God is Shepherd/Protector - God is Servant - God Patient/Self-Controlled

TERM 3 WK 1 07/21 WK2 07/27 WK3 08/03 WK4 08/10 NATURAL SCIENCES GRADE 7 CONTENT SOURCES OF ENERGY Renewable and non-renewable sources of energy energy is needed to make everything work, move or live a

### Heat Transfer: Conduction, Convection, and Radiation

Heat Transfer: Conduction, Convection, and Radiation Introduction We have learned that heat is the energy that makes molecules move. Molecules with more heat energy move faster, and molecules with less

### CHAPTER 5 ENERGY Section 1 - What Is Energy?

CHAPTER 5 ENERGY Section 1 - What Is Energy? What You Will Learn Explain the relationship between energy and work. Compare kinetic and potential energy. Describe the different forms of energy. It's match

### Grade Level: Grade 4 Title: Electrical Current and Charges & Presence of the Holy Spirit. Denomination: Christian Lesson ID: PS-G4-04-CH

Grade Level: Grade 4 Title: Electrical Current and Charges & Presence of the Holy Spirit Denomination: Christian Lesson ID: PS-G4-04-CH Contact Info: Exploring the World, Discovering God (EWDG) Institute

### Test Bank - Chapter 2 Multiple Choice

Test Bank - Chapter 2 The questions in the test bank cover the concepts from the lessons in Chapter 2. Select questions from any of the categories that match the content you covered with students. The

### ENERGY Types of Energy and Energy Transfers

ENERGY Types of Energy and Energy Transfers Energy is the ability to make something useful happen. These types Light Kinetic an object has due to its motion. Chemical can be released when chemical reactions

### Heat and Temperature. Temperature Scales. Thermometers and Temperature Scales

Heat and Temperature Thermometers and Temperature Scales The mercury-based one you see here relies on the fact that mercury expands at a predictable rate with temperature. The scale of the thermometer

### Chapter 4 Forms of energy

Chapter 4 Forms of energy Introduction This chapter compromises a set of activities that focuses on the energy sources and conversion. The activities illustrate The concept and forms of energy; The different

Chapter 2 Student Reading Atoms and molecules are in motion We warm things up and cool things down all the time, but we usually don t think much about what s really happening. If you put a room-temperature

### Assessment Schedule 2012: Physics: Demonstrate understanding of aspects of heat (90939)

NCEA Level 1 Physics (90939) 2012 page 1 of 6 Assessment Schedule 2012: Physics: Demonstrate understanding of aspects of heat (90939) Assessment Criteria ONE (a)(i) States the term condensation. States

### IGCSE REVISION QUESTIONS

IGCSE REVISION QUESTIONS These questions are based on the EdExcel IGCSE Physics (4420) specification. The specification is broken up into seven sections: 1.) Forces and motion 2.) Electricity 3.) Waves

### Heating the Atmosphere. Dr. Michael J Passow

Heating the Atmosphere Dr. Michael J Passow Heat vs. Temperature Heat refers to energy transferred from one object to another Temperature measures the average kinetic energy in a substance. When heat energy

### 2.0 Heat affects matter in different ways

2.0 Heat affects matter in different ways 2.1 States of Matter and The Particle Model of Matter Matter is made up of tiny particles and exists in three states: solid, liquid and gas. The Particle Model

### Chillin Out: Designing an Insulator

SHPE Jr. Chapter May 2015 STEM Activity Instructor Resource Chillin Out: Designing an Insulator Students learn about the three ways heat can be transferred from one object to another. They also learn what

### Energy - Heat, Light, and Sound

Science Benchmark: 06:06 Heat, light, and sound are all forms of energy. Heat can be transferred by radiation, conduction and convection. Visible light can be produced, reflected, refracted, and separated

### Energy and Energy Resources

CHAPTER 9 DIRECTED READING WORKSHEET Energy and Energy Resources As you read Chapter 9, which begins on page 212 of your textbook, answer the following questions. Strange but True! (p. 212) 1. What vast

### Semester 2. Final Exam Review

Semester 2 Final Exam Review Motion and Force Vocab Motion object changes position relative to a reference point. Speed distance traveled in a period of time. Velocity speed in a direction. Acceleration

### I. C O N T E N T S T A N D A R D S

Introductory Physics, High School Learning Standards for a Full First-Year Course I. C O N T E N T S T A N D A R D S 4. Waves Central Concept: Waves carry energy from place to place without the transfer

### Practice Test. 4) The planet Earth loses heat mainly by A) conduction. B) convection. C) radiation. D) all of these Answer: C

Practice Test 1) Increase the pressure in a container of oxygen gas while keeping the temperature constant and you increase the A) molecular speed. B) molecular kinetic energy. C) Choice A and choice B

### Science Tutor: Physical Science

Science Tutor: Physical Science By GARY RAHAM COPYRIGHT 2006 Mark Twain Media, Inc. ISBN 1-58037-331-3 Printing No. CD-404045 Mark Twain Media, Inc., Publishers Distributed by Carson-Dellosa Publishing

### Section 1: Work, Power, and Machines Section 2: Simple Machines Section 3: What Is Energy? Section 4: Conservation of Energy

Section 1: Work, Power, and Machines Section 2: Simple Machines Section 3: What Is Energy? Section 4: Conservation of Energy Key Terms Work Power Mechanical Advantages Machines no matter how simple or

### The Following Question complete from your End-of Chapter questions in your book on page 157 (write answers in complete sentences:

The Following Question complete from your End-of Chapter questions in your book on page 157 (write answers in complete sentences: 1. Question 1 Wind, solar, geothermal 2. Question 2a C. Power is a measure

### Physics Honors Page 1

1. An ideal standard of measurement should be. variable, but not accessible variable and accessible accessible, but not variable neither variable nor accessible 2. The approximate height of a 12-ounce

### Energy. Part 1: What is Energy?

Energy Part 1: What is Energy? What Is Energy? Energy takes many different forms and has many different effects. But what is it, exactly? Energy is the ability to cause a change. It could be a change in

### The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS. Friday, June 20, 2014 1:15 to 4:15 p.m.

P.S./PHYSICS The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION PHYSICAL SETTING PHYSICS Friday, June 20, 2014 1:15 to 4:15 p.m., only The possession or use of any communications device

### Chapter 10 Our Star. Why does the Sun shine? Radius: m (109 times Earth) Mass: kg (300,000 Earths)

Chapter 10 Our Star X-ray visible Radius: 6.9 10 8 m (109 times Earth) Mass: 2 10 30 kg (300,000 Earths) Luminosity: 3.8 10 26 watts (more than our entire world uses in 1 year!) Why does the Sun shine?

### Section 7. Laws of Thermodynamics: Too Hot, Too Cold, Just Right. What Do You See? What Do You Think? Investigate.

Chapter 6 Electricity for Everyone Section 7 Laws of Thermodynamics: Too Hot, Too Cold, Just Right What Do You See? Learning Outcomes In this section, you will Assess experimentally the final temperature

### Q1. The diagram shows part of a solar water heater. Water circulating through the solar panel is heated by the Sun.

Q. The diagram shows part of a solar water heater. Water circulating through the solar panel is heated by the Sun. (i) Complete the following sentence. Heat energy is transferred from the Sun to the solar

### Energy and Angular Momentum. Laws of Conservation.

Energy and Angular Momentum. Laws of Conservation. Announcements n Homework # 2 is due on Friday, Oct. 7 th. n First in-class exam will take place on Thursday, October 6th. Please, remember your STUDENT

### Experimenting With Forces

Have you heard the story about Isaac Newton and the apple? Newton was a scientist who lived about 300 years ago. He made many important discoveries about how and why things move. The apple story goes like

### Energy Transformations

Energy Transformations Concept Sheet Energy Transformations PS.6: The student will investigate and understand states and forms of energy and how energy is transferred and transformed. 1. Energy is the

### Exam II. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

Exam II Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. What is the distinguishing characteristic of crystals? a. They are solids. b. They

### Module 2.2. Heat transfer mechanisms

Module 2.2 Heat transfer mechanisms Learning Outcomes On successful completion of this module learners will be able to - Describe the 1 st and 2 nd laws of thermodynamics. - Describe heat transfer mechanisms.

### Interconversion of potential energy and kinetic energy

1 ENERGY III INTERCONVERSION OF FORMS OF ENERGY ENERGY CHANGES We will consider first the interconversion of potential energy and kinetic energy. We will then consider the interconversion of different