Directed Reading A. Section: Types of Machines LEVERS
|
|
|
- James Preston
- 7 years ago
- Views:
Transcription
1 Skills Worksheet Directed Reading A Section: Types of Machines 1. A knife is actually a very sharp. 2. What are the six simple machines that all other machines are made from? LEVERS 3. A simple machine with a bar that pivots at a fixed point is a(n) a. wedge. c. knife. b. lever. d. screw. 4. What is the fixed point on a lever? a. bolt c. fulcrum b. pivot point d. wedge 5. What do first-class levers always change the direction of? a. input force c. distance b. output force d. fulcrum 6. When you use the claw of a hammer to remove a nail, what type of simple machine are you using? a. wedge c. second-class lever b. first-class lever d. third-class lever 7. What three things are present with each class of lever? 8. Describe the three classes of levers and give an example of each. Holt Science and Technology 7 Work and Machines
2 Directed Reading A continued 9. In a second-class lever, why must you exert input force over a greater distance? 10. Why is the output force always less than the input force in a third-class lever? PULLEYS 11. Which simple machine has a grooved wheel that holds a rope or cable? a. lever c. pulley b. wedge d. wheel and axle 12. Which pulley is attached to something that does not move? a. fixed pulley c. block and tackle pulley b. movable pulley d. simple pulley 13. Which type of pulley is attached to the object being moved? a. fixed pulley c. block and tackle pulley b. movable pulley d. simple pulley 14. What determines the mechanical advantage of a block and tackle pulley? a. the amount of input force b. the amount of output force c. the length of the rope d. the number of rope segments 15. Why does a fixed pulley provide only a mechanical advantage of 1? How does this type of pulley affect the force? 16. How does a movable pulley increase the output force? 17. How does a block-and-tackle multiply the input force? Holt Science and Technology 8 Work and Machines
3 Directed Reading A continued WHEEL AND AXLE 18. What type of simple machine is a faucet? a. lever c. wheel and axle b. pulley d. wedge 19. What does a wheel and axle consist of? 20. How do you find the mechanical advantage of a wheel and axle? INCLINED PLANES 21. When you use a ramp to move an object, what type of simple machine are you using? a. lever c. pulley b. inclined plane d. wedge 22. A wedge is what type of simple machine? a. pulley c. inclined plane b. lever d. wheel and axle 23. Which of the following is an inclined plane wrapped in a spiral around a cylinder? a. screw b. wedge b. nail d. ramp 24. A jar lid is an example of which simple machine? a. nail b. wedge b. screw d. ramp 25. A simple machine that has a straight, slanted surface is a(n). 26. A simple machine that is made up of two inclined planes and moves is a(n) 27. How do you find the mechanical advantage of an inclined plane? Holt Science and Technology 9 Work and Machines
4 Directed Reading A continued 28. Why does a sharpened knife cut better? 29. What two factors determine the mechanical advantage of a screw? COMPOUND MACHINES 30. When two or more simple machines are combined, they make a(n). 31. What three simple machines make up a can opener? 32. Why is the mechanical efficiency of most compound machines lower than most simple machines? 33. Name two compound machines. 34. Why is it important to reduce friction on compound machines? Holt Science and Technology 10 Work and Machines
5 TEACHER RESOURCE PAGE Answer Key Directed Reading A SECTION: WORK AND POWER 1. C 2. A 3. Answers will vary. Sample answer: Carrying a book across a room is not work because the book is not moving in the direction of the force. 4. The object moves as a force is applied to it and the direction of the object s motion is the same as the direction of the force. 5. kinetic 6. Because work depends upon distance and force. The straight cliff is a shorter distance but takes more force. The slope is a longer distance, but takes less force. 7. force (F), distance (D) 8. joule 9. energy 10. weight and distance 11. B 12. C 13. Power measures how fast work happens or how quickly energy is transferred 14. Power output is greater when more work is done in a given amount of time and when the time it takes to do a certain amount of work is decreased. 15. The power output is lower when you sand the shelf by hand. 16. A more powerful engine will move the car more quickly. For a given speed, a more powerful engine can move a heavier car than a less powerful engine can. 17. A joule is a unit to express energy. One watt is equal to 1 joule per second. SECTION: WHAT IS A MACHINE? 1. A 2. C 3. work input 4. work output 5. Work input is the work done on a machine, such as when you push on the screwdriver to pry the paint can lid off. Work output is the work done by the machine such as the screwdriver lifting the paint can lid. Students examples may vary. 6. Sample answer: scissors and chopsticks 7. increases 8. input force 9. The amount of work for each is the same. 10. distance 11. Machines make work easier by changing the size or direction of the input force. But the amount of work done is the same. 12. C 13. B 14. greater 15. distance 16. B 17. D 18. input 19. friction 20. A machine that is 100% efficient. 21. Machines aren t 100% efficient because some of the machine s work input is used up by the friction from moving parts. 22. Magnets and lubricants can help reduce friction. SECTION: TYPES OF MACHINES 1. wedge 2. lever, inclined plane, wedge, screw, pulley, wheel and axle 3. B 4. C 5. B 6. B 7. fulcrum, bar, load Holt Science and Technology 100 Work and Machines
6 TEACHER RESOURCE PAGE 8. Answers will vary. Sample answer: In a first-class lever, the fulcrum is between the input force and the load;. hammer lifting up nail. In a secondclass lever, the load is between the fulcrum and the input force; wheel barrow, bottle opener. In a third-class lever, the input force is between the fulcrum and the load; hammer pounding nail. 9. Because the output force is greater than the input force. 10. Because they do not change the direction of the force and they do not increase input force. 11. C 12. A 13. B 14. D 15. Distance through which the forces are exerted and the forces themselves are the same.this pulley changes the direction of the force. 16. Because the movable pulley moves up with the load as the load is lifted. 17. It multiplies the input force by increasing the distance through which the load moves. 18. C 19. two circular objects of different sizes 20. Divide the radius of the wheel by the radius of the axle. 21. B 22. C 23. A 24. B 25. inclined plane 26. wedge 27. Divide the length of the inclined plane by the height to which the object is lifted. 28. The knife is thinner and longer, which increases its mechanical advantage. 29. the length of the spiral on the screw and how close together the threads are. 30. compound machine 31. second-class lever, wedge, wheel and axle 32. Because there are more moving parts causing more friction 33. Answers will vary. Sample answer: a hand can opener and a block and tackle pulley 34. Too much friction can damage the simple machines that make up the compound machine. Directed Reading B SECTION: WORK AND POWER 1. C 2. A 3. C 4. energy 5. direction 6. force 7. D 8. distance 9. push 10. force 11. C 12. A 13. D 14. B 15. power 16. watt 17. time 18. output SECTION: WHAT IS A MACHINE? 1. D 2. C 3. machine 4. input 5. output 6. greater 7. A 8. B 9. B 10. D 11. A 12. D 13. friction 14. ideal machine 15. oil SECTION: TYPES OF MACHINES 1. C 2. B 3. C 4. A 5. C 6. B 7. A 8. C 9. A 10. B Holt Science and Technology 101 Work and Machines
ANSWER KEY. Work and Machines
Chapter Project Worksheet 1 1. inclined plane, wedge, screw, lever, wheel and axle, pulley 2. pulley 3. lever 4. inclined plane 5. Answers will vary: top, side, or bottom 6. Answers will vary; only one
Name Class Date. Pulley. Wedge
CHAPTER 13 2 Simple Machines SECTION Work and Energy KEY IDEAS As you read this section, keep these questions in mind: What are simple machines? What simple machines are in the lever family? What simple
Mechanical Reasoning Review
Mechanical Reasoning Review Work can be made easier or faster through practical applications of simple and/or compound machines. This is called mechanical advantage - in other words, using the principal
Compound Machine: Two or more simple machines working together to make work easier. Examples: Wheelbarrow, Can Opener, Bicycle
Name SOL 4.2 Simple and Compound Machines NOTE - Simple machines are NOT included in the 5 th REVISED Science Standards Simple Machine: A machine with few or no moving parts. Simple machines make work
Simple Machines. What are simple machines?
Definitions to know: Simple Machines Work done when an applied force causes an object to move in the direction of the force Energy ability to cause change; can change the speed, direction, shape, or temperature
Simple Machines Quiz
Simple Machines Quiz Part 1. Write the name of the simple machine that is described questions 1-4 below. Word Bank: Wheel & Axle Screw Pulley Inclined Plane Lever 1. These two parts act as one simple machine.
Everyday Simple Machines
Everyday Simple Machines Teacher's Guide Editors: Brian A. Jerome Ph.D. Stephanie Zak Jerome Assistant Editors: Louise Marrier Hannah Fjeld Graphics: Fred Thodal Heidi Berry Lyndsey Canfield www.visuallearningco.com
EVALUAT ING ACADEMIC READINESS FOR APPRENTICESHIP TRAINING Revised for ACCESS TO APPRENTICESHIP
EVALUAT ING ACADEMIC READINESS FOR APPRENTICESHIP TRAINING for ACCESS TO APPRENTICESHIP SCIENCE SKILLS SIMPLE MACHINES & MECHANICAL ADVANTAGE AN ACADEMIC SKILLS MANUAL for The Construction Trades: Mechanical
The origin of the wedge is unknown, because it has been in use as early as the stone age.
Simple Machines Compiled and edited from Wikipedia Inclined Plane An inclined plane is a plane surface set at an angle, other than a right angle, against a horizontal surface. The inclined plane permits
Pre and Post-Visit Activities
Pre and Post-Visit Activities Simple Machines Table of Contents: Important Information: 2 Vocabulary: 3 Pre-Visit Activities: 4 Post-Visit Activities: 5 Vocabulary Word Search: 6 2 Important Information
What are simple machines? primary
What are simple machines? primary Here you will discover all sorts of interesting things about simple machines and how they work. There are some great diagrams as well! A machine is something that makes
2.) In general, what do most simple machines do? Simple machines make work easier by reducing the force needed.
Name: Simple Machines Study Guide Force and Work- 1.) To be considered work, you have to have a force and a distance through which the force acts. 2.) What is the formula for work? work = force x distance_
Partnerships Implementing Engineering Education Worcester Polytechnic Institute Worcester Public Schools
Partnerships Implementing Engineering Education Worcester Polytechnic Institute Worcester Public Schools Supported by: National Science Foundation Simple Machines: 4.G.1 Introduction to Simple Machines
You ll have leverage as you guide
Teacher s Guide Simple Machines Dear Educator, You ll have leverage as you guide students in the exploration of simple machines. In KIDS DISCOVER Simple Machines, your young scientists will learn about
Overall Indicator: The student: recognizes the effects of forces acting on structures and mechanisms
Grade 5 Performance Task: Disaster Recovery Content Connections Assessment Criterion Understanding of basic concepts Overall Indicator: The student: recognizes the effects of forces acting on structures
Simple machines provide a mechanical advantage that makes our work faster and easier, and they are all around us every day.
LEARNING MODULE: SIMPLE MACHINES Pre-Visit Activities We suggest that you use these pre-visit classroom acitivites to prepare your students for a rewarding Museum visit. Before your visit, introduce your
The Lever. The law of conservation of energy applies to all machines!
Simple Machines A machine is a device for multiplying forces or simply changing the direction of forces. Many machines can increase the speed with which work is done. The Lever The law of conservation
Simple and Complex Machines
Simple and Complex Machines A Science A Z Physical Series Word Count: 1,230 Simple and Complex Machines Written by Ned Jensen Visit www.sciencea-z.com www.sciencea-z.com Simple and Complex Machines Key
Simple Kitchen Machines
Provided by TryEngineering - Lesson Focus Lesson focuses on simple machines and how they can be found in many everyday items. Students explore the different types of simple machines, how they work, and
Georgia Performance Standards Framework for Physical Science 8 th GRADE. Unit: Fast and Furious Forces General Task Life is Easy with Simple Machines
Subject Area: Physical Science Grade: 8 Unit: Fast and Furious Forces General Task Life is Easy with Simple Machines S8P3. Students will investigate relationship between force, mass, and the motion of
Levers for Lifting BROWARD COUNTY ELEMENTARY SCIENCE BENCHMARK PLAN ACTIVITY ASSESSMENT OPPORTUNITIES. Grade 3 Quarter 3 Activity 23
activity Levers for Lifting BROWARD COUNTY ELEMENTARY SCIENCE BENCHMARK PLAN Grade Quarter Activity SC.C... The student understands that the motion of an object can be described and measured. SC.H... The
7 TH GRADE SCIENCE REVIEW
7 TH GRADE SCIENCE REVIEW The motion of an object is always judged with respect to some other object or point. When an object changes position over time relative to a reference point, the object is in
Fulcrum Effort or Applied Force. Fulcrum Load or Resistance. Effort or Applied Force. Load or Resistance. Other First Class Lever Examples.
First Class Lever Second Class Lever Load or Resistance Fulcrum Effort or Applied Force Fulcrum Load or Resistance Effort or Applied Force Other First Class Lever Examples Action Spring Force Load Applied
Partnerships Implementing Engineering Education Worcester Polytechnic Institute Worcester Public Schools
Partnerships Implementing Engineering Education Worcester Polytechnic Institute Worcester Public Schools Supported by: National Science Foundation Simple Machines: 4.G.2 _ Inclined Planes and Pulleys Grade
Levers and Pulleys. 5 th Grade Science Investigation. Unit
Levers and Pulleys 5 th Grade Science Investigation Unit What Do We Already Know? A lever and pulley are mechanical advantages=makes work easier, and helps lift things you couldn t t normally lift Combined
Mechanical Systems. Grade 8 Unit 4 Test. 1. A wheelbarrow is an example of what simple machine? Class 1 lever. Class 2 lever.
Mechanical Systems Grade 8 Unit 4 Test Student Class 1. A wheelbarrow is an example of what simple machine? D Wheel and Axle 2. A hockey stick is an example of what simple machine? D Inclined plane 3.
SCIENCE STD. V (2015) More About Force Energy and Simple Machines. Name Roll No. Date Std. V
SCIENCE STD. V (2015) More About Force Energy and Simple Machines Name Roll No. Date Std. V Q1.What is Force? Force is a push or a pull that makes the things move. Q2.What effect does Force has on our
-------------------------------------------------------------------------------------------------------------------
Name: Date: D. Thomassen 2007 Machines by Lillian Duggan answer key Colorado Model Content Standard #2: Physical Science: Students know and understand common properties, forms, and changes in matter and
Playful machines A Facilitator s Guide to Simple Machines in the Playground
inspiring discovery Playful machines A Facilitator s Guide to Simple Machines in the Playground Our Vision Canadians recognize that Science 1 is intrinsic to their lives and acknowledge the fundamental
Engineer III Simple Machines
Harford District 2014 Cub Scout Day Camp June 23-78 Knights of the Roundtable Engineer III Simple Machines Station Volunteer s Guide Thank you for being a station volunteer! The stations are the heart
Clipper Creations. Provided by TryEngineering - www.tryengineering.org Click here to provide feedback on this lesson.
Provided by TryEngineering - Click here to provide feedback on this lesson. Lesson Focus Develop a working model of a nail clipper. Note: This lesson plan is designed for classroom use only, with supervision
F output. F input. F = Force in Newtons ( N ) d output. d = distance ( m )
Mechanical Advantage, Speed Ratio, Work and Efficiency Machines Make Work Easier Machines help people do things that they normally couldn t do on their own. Mechanical Advantage A machine makes work easier
INCLINED PLANE LEVER SCREW WHEEL & AXLE WEDGE PULLEY
HANDBOOK Machines are tools that help people do work more easily. In physics, you do work anytime you use force to move an object. Skateboards, cars, bikes, shovels, boats, doors, light switches, and stairs
Inclined Plane: Distance vs. Force
1a Inclined Plane: Distance vs. Force Look at the inclined plane model you built for Card 2. It s a ramp, so it s easy to slide or roll things up and down it. As you noticed, it is a little more difficult
When you have completed this lesson you will be able to: identify some common simple machines explain how simple machines make work easier
Simple machines OBJECTIVES When you have completed this lesson you will be able to: identify some common simple machines explain how simple machines make work easier A machine is an invention that makes
Using mechanical energy for daily
unit 3 Using mechanical energy for daily activities Physics Chapter 3 Using mechanical energy for daily activities Competency Uses mechanical energy for day-to-day activities Competency level 3.1 Investigates
Unit 8A: Systems in Action (Pg. 2 85) Chapter 2: Getting to Work (pg. 28 55)
Unit 8A: Systems in Action (Pg. 2 85) Chapter 2: Getting to Work (pg. 28 55) Name: Date: 2.1: Physical Systems: Simple Machines (Pg. 30 35): Read Pages 30-35. Answer the following questions on pg. 35:
Simple Machines. Integration across the SESE curriculum History Curriculum:
Simple Machines Integration across the SESE curriculum History Curriculum: There are natural links between the theme of Simple Machines and a number of strands in the history curriculum: 1) Continuity
PUTTING THE SIMPLE IN SIMPLE MACHINES
CORE KNOWLEDGE NATIONAL CONFERENCE ORLANDO, FLORIDA APRIL 29 - MAY 1, 1999 PUTTING THE SIMPLE IN SIMPLE MACHINES Grade Level: Presented by: Length of Unit: Second Lou Tucker, Donna Cueto, Ridge View Elementary,
Christa s Lost Lessons Simple Machines
Christa s Lost Lessons Simple Machines Introduction: Among the six lost lessons, the simple machines demonstration was most rudimentary. Perhaps, it is because most earth-based simple machines are crafted
PUSH AND PULL: SIMPLE MACHINES AT WORK
PUSH AND PULL: SIMPLE MACHINES AT WORK 1 videocassette... 23 minutes Copyright MCMXC Rainbow Educational Media 4540 Preslyn Drive Raleigh, NC 27616-3177 Distributed by: United Learning 1560 Sherman Ave.,
Machines. Simple. What is a machine?
Simple Machines Worksheet 2 A worksheet produced by the Native Access to Engineering Programme Concordia University, Montreal What is a machine? Webster s Dictionary defines a machine as 1. a structure
Workshop Stand, Pulleys, Bolts, Pulley String, Pinch Markers, 500g Hooked Mass, 500g Spring Scale, 250g Spring Scale, Meterstick.
Pulleys: Work and Energy Main Topic Subtopic Learning Level Technology Level Activity Type Forces Simple Machines Middle Low Student Teacher s Notes Description: Investigate a complex block-and-tackle
Name: Partners: Period: Coaster Option: 1. In the space below, make a sketch of your roller coaster.
1. In the space below, make a sketch of your roller coaster. 2. On your sketch, label different areas of acceleration. Put a next to an area of negative acceleration, a + next to an area of positive acceleration,
MECHANICAL PRINCIPLES OUTCOME 4 MECHANICAL POWER TRANSMISSION TUTORIAL 1 SIMPLE MACHINES
MECHANICAL PRINCIPLES OUTCOME 4 MECHANICAL POWER TRANSMISSION TUTORIAL 1 SIMPLE MACHINES Simple machines: lifting devices e.g. lever systems, inclined plane, screw jack, pulley blocks, Weston differential
Simple Machines. Preparation. Objectives. Standards. Grade Level: 3-5 Group Size: 25-30 Time: 60 Minutes Presenters: 3-4
Simple Machines Preparation Grade Level: 3-5 Group Size: 25-30 Time: 60 Minutes Presenters: 3-4 Objectives This lesson will enable students to: Describe and define simple machines. Identify simple machines
Simple Machines TOUR EDUCATOR S GUIDE PRE- AND POST-VISIT LESSON PLAN IDEAS & STRATEGIES / GRADES: 4 TH - 8 TH
Simple Machines TOUR EDUCATOR S GUIDE PRE- AND POST-VISIT LESSON PLAN IDEAS & STRATEGIES / GRADES: 4 TH - 8 TH Overview Simple machines have played a large role in human history, supporting our everyday
Roanoke Pinball Museum Key Concepts
Roanoke Pinball Museum Key Concepts What are Pinball Machines Made of? SOL 3.3 Many different materials are used to make a pinball machine: 1. Steel: The pinball is made of steel, so it has a lot of mass.
Simple Machines. Student s worksheets. Carles Egusquiza Bueno. IES Rocagrossa Lloret de Mar. CLIL Course. Norwich Institute for Language Education
Simple Machines IES Rocagrossa Lloret de Mar CLIL Course Norwich Institute for Language Education January March 2010 CONTENTS Contents...2 Unit 1: Force, work and machines...3 Lesson 1: Force...4 Lesson
3rd/4th Grade Science Unit: Forces and Motion. Melissa Gucker TE 804 Spring 2007
3rd/4th Grade Science Unit: Forces and Motion Melissa Gucker TE 804 Spring 2007 Part I: Learning Goals Documentation Unit Title: Forces and Motion Grade Level: 3 rd Designer: Melissa Gucker The Main Idea(s)/Importance
Lesson Plans. Teacher: High School Physical Science Grade: 9th. Curricular Areas/s: Simple machines and mechanical advantages
Lesson Plans Teacher: High School Physical Science Grade: 9th Curricular Areas/s: Simple machines and mechanical advantages Standard/s: Understand and apply knowledge of motions and forces Objects change
April Cousins Jessica Denson TEDU 414 Unit Plan Unit Plan: Simple Machines 3 rd Grade Unit Introduction: This unit focuses on use and functions of
April Cousins Jessica Denson TEDU 414 Unit Plan Unit Plan: Simple Machines 3 rd Grade Unit Introduction: This unit focuses on use and functions of simple machines and their importance in our everyday lives.
Mechanical & Electrical Reasoning Study Guide
Mechanical & Electrical Reasoning Study Guide About Mechanical Aptitude Tests Who is likely to take a mechanical reasoning test? Mechanical aptitude tests are commonly administered during pre-employment
Quick and Easy Simple Machine Experiments to Share with Your Kids
Quick and Easy Simple Machine Experiments to Share with Your Kids By Aurora Lipper Pulleys and levers are simple machines, and they make our lives easier. They make it easier to lift, move and build things.
BOARD OF SUPERVISORS. Lisa M. Garrett, Director of Personnel. To Enrich Lives Through Effective and Caring Service
COUNTY OF LOS ANGELES Department of Human Resources Workforce Planning, Test Research, and Appeals Division 3333 Wilshire Blvd., Ste. 350, Los Angeles, CA 90010 24-Hour Jobline: (800) 970-LIST http://dhr.lacounty.info
SIMPLE MACHINES MADE SIMPLE
SIMPLE MACHINES MADE SIMPLE Grade Level or Special Area: 2 nd Grade Science Written by: Jan Polzin, Lincoln Academy Charter School, Arvada, Colorado Length of Unit: 10 lessons (nine science and one writing,
Simple machines. Law of Simple Machines. Resistance Force x resistance distance = effort force x effort distance
Simple machines A simple machine is a evice that requires only the force of a human to perform work. One of the properties of a simple machine is that it can be use to increase the force that can be applie
Cluster 3: Forces and Simple Machines
Grade 5 Cluster 3: Forces and Simple Machines Overview In this cluster, students increase their understanding of forces through the study of simple machines. Emphasis is placed on investigating a variety
Technology Exploration-I
Technology Exploration-I PREPARED BY Academic Services August 2011 Applied Technology High Schools, 2011 Module Objectives After the completion of this module, the student should be able to: Identify pulleys.
Simple Machines. Figure 2: Basic design for a mousetrap vehicle
Mousetrap Vehicles Figure 1: This sample mousetrap-powered vehicle has a large drive wheel and a small axle. The vehicle will move slowly and travel a long distance for each turn of the wheel. 1 People
Unit 4 Mechanical Systems Learning Pack (Science In Action 8)
1 2 Focus in Action UNIT LEARNING PACKS These booklets are designed to provide Grade 8 students with all the resources needed to review or reinforce concepts, covered in the Alberta Science Curriculum,
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
Tree House Escape. Design Challenge Learning. https://www.thetech.org/educators/design- challenge- learning
A frightened friend is stranded in a treehouse and needs help getting out! In this design challenge students explore how simple machines can make work easier while they design a device to retrieve their
Physical Science Worksheet
Physical Science Worksheet GRADE LEVEL: Third Topic: Motion of Objects Grade Level Standard: 3-3 Compare the common forces and the motion of objects. Grade Level Benchmark: 4. Identify and use simple machines
PuLLeys. SaraH TieCK. Simple Machines
PuLLeys i p e m h e SaraH TieCK s m l a c i n s Simple Machines s i m p e m l a c h i n e s PuLLeyS A Buddy Book by SaraH TieCK VISIT US AT www.abdopublishing.com Published by ABDO Publishing Company,
Name. Most of the bones of the limbs (arms & legs) act as levers. These levers are powered by muscles.
Bones as Levers 1 Name Bones as Levers You may not think of your limbs as being machines, but they are. The action of a muscle pulling on a bone often works like a type of simple machine called a lever.
Second Grade, Levers and Pulleys and Gears, Oh My! 2005 Colorado Unit Writing Project 1
Levers and Pulleys and Gears, Oh My! Grade Level or Special Area: 2 nd Grade, Science Written by: Amy Hoen, Academy Elementary School, Westminster, CO Length of Unit: Six lessons (approximately six days;
Simple Machines. Terri Wakild. South Haven Public Schools
Simple Machines Terri Wakild South Haven Public Schools April, 2006 Participant in Research Experience for Teachers (RET) Workshop at Western Michigan University 2005-06 Academic Year Simple Machines Grade
Ropes and Pulleys Investigations. Level A Investigations. Level B Investigations
Ropes and Pulleys Investigations Level A Investigations Ropes and Pulleys How can you use the ropes and pulleys to lift large weights with small forces? In this Investigation, students learn to define
CHAPTER 2 BLOCK AND TACKLE CHAPTER LEARNING OBJECTIVES
CHAPTER 2 BLOCK AND TACKLE CHAPTER LEARNING OBJECTIVES Upon completion of this chapter, you should be able to do the following: Describe the advantage of block and tackle afloat and ashore Blocks pulleys
What is Energy? 1 45 minutes Energy and You: Energy Picnic Science, Physical Education Engage
Unit Grades K-3 Awareness Teacher Overview What is energy? Energy makes change; it does things for us. It moves cars along the road and boats over the water. It bakes a cake in the oven and keeps ice frozen
Questions: Does it always take the same amount of force to lift a load? Where should you press to lift a load with the least amount of force?
Lifting A Load 1 NAME LIFTING A LOAD Questions: Does it always take the same amount of force to lift a load? Where should you press to lift a load with the least amount of force? Background Information:
BHS Freshman Physics Review. Chapter 2 Linear Motion Physics is the oldest science (astronomy) and the foundation for every other science.
BHS Freshman Physics Review Chapter 2 Linear Motion Physics is the oldest science (astronomy) and the foundation for every other science. Galileo (1564-1642): 1 st true scientist and 1 st person to use
Property of Science Playground ACTIVITY BOOKLET
Property of Science Playground ACTIVITY BOOKLET Table Contents Simple Machines Discovery Box Contents Introduction to the Discovery Boxes Directions for Using the Discovery Box Activity Booklet Teaching
Simple Machines Design Project. Project Guide
Simple Machines Design Project Project Guide Freetal i g i D pler! Sam Table of Contents Simple Machines Design Project Digital Sample Project Guide Project Guide: Table of Contents Teacher Background
F N A) 330 N 0.31 B) 310 N 0.33 C) 250 N 0.27 D) 290 N 0.30 E) 370 N 0.26
Physics 23 Exam 2 Spring 2010 Dr. Alward Page 1 1. A 250-N force is directed horizontally as shown to push a 29-kg box up an inclined plane at a constant speed. Determine the magnitude of the normal force,
WORK DONE BY A CONSTANT FORCE
WORK DONE BY A CONSTANT FORCE The definition of work, W, when a constant force (F) is in the direction of displacement (d) is W = Fd SI unit is the Newton-meter (Nm) = Joule, J If you exert a force of
At the skate park on the ramp
At the skate park on the ramp 1 On the ramp When a cart rolls down a ramp, it begins at rest, but starts moving downward upon release covers more distance each second When a cart rolls up a ramp, it rises
Chapter 6 Work and Energy
Chapter 6 WORK AND ENERGY PREVIEW Work is the scalar product of the force acting on an object and the displacement through which it acts. When work is done on or by a system, the energy of that system
Physics 11 Assignment KEY Dynamics Chapters 4 & 5
Physics Assignment KEY Dynamics Chapters 4 & 5 ote: for all dynamics problem-solving questions, draw appropriate free body diagrams and use the aforementioned problem-solving method.. Define the following
Student Exploration: Pulleys
Name: Date: Student Exploration: Pulleys Vocabulary: effort, load, mechanical advantage, pulley, pulley system Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Suppose you had to haul a
Technological Studies
1 Features of machines... 2 (a) Load and effort... 3 (b) Mechanical Advantage... 3 (c) Velocity Ratio... 4 (d) Work done... 5 (e) Efficiency... 6 2 Classifications of motions... 7 (a) Linear motions...
Work, Energy & Momentum Homework Packet Worksheet 1: This is a lot of work!
Work, Energy & Momentum Homework Packet Worksheet 1: This is a lot of work! 1. A student holds her 1.5-kg psychology textbook out of a second floor classroom window until her arm is tired; then she releases
Study Guide CCA week 12 - Key
Study Guide CCA week 12 - Key Vocabulary to know: (define on separate paper & give an example of each) Electrical Energy Mechanical Energy Force Energy carried by electricity Ex: Toaster, Fan, Anything
Problem Set 1. Ans: a = 1.74 m/s 2, t = 4.80 s
Problem Set 1 1.1 A bicyclist starts from rest and after traveling along a straight path a distance of 20 m reaches a speed of 30 km/h. Determine her constant acceleration. How long does it take her to
Work, Energy and Power
Work, Energy and Power In this section of the Transport unit, we will look at the energy changes that take place when a force acts upon an object. Energy can t be created or destroyed, it can only be changed
9. The kinetic energy of the moving object is (1) 5 J (3) 15 J (2) 10 J (4) 50 J
1. If the kinetic energy of an object is 16 joules when its speed is 4.0 meters per second, then the mass of the objects is (1) 0.5 kg (3) 8.0 kg (2) 2.0 kg (4) 19.6 kg Base your answers to questions 9
Name Period WORKSHEET: KINETIC AND POTENTIAL ENERGY PROBLEMS. 1. Stored energy or energy due to position is known as energy.
Name Period Date WORKSHEET: KINETIC AND POTENTIAL ENERGY PROBLEMS 1. Stored energy or energy due to position is known as energy. 2. The formula for calculating potential energy is. 3. The three factors
PART2Machines. Measuring Work on a Cart on an. Inclined Plane 102. Inclined Plane 104. Inquiry 12.1 Using Pulleys To Do Work 112
TERRY G. MCCREA/SMITHSONIAN INSTITUTION PART2Machines LESSON 11 The Inclined Plane 100 Inquiry 11.1 Inquiry 11.2 Measuring Forces on a Cart on an Inclined Plane 102 Measuring Work on a Cart on an Inclined
There are four types of friction, they are 1).Static friction 2) Dynamic friction 3) Sliding friction 4) Rolling friction
2.3 RICTION The property by virtue of which a resisting force is created between two rough bodies that resists the sliding of one body over the other is known as friction. The force that always opposes
Introduction to Linear Actuators: Precision Linear Motion Accomplished Easily and Economically
Introduction to Linear Actuators: Precision Linear Motion Accomplished Easily and Economically Part 1 of 2 When students are trained in classic mechanical engineering, they are taught to construct a system
SpaceActivities. Age 8+ Teacher s Notes. In collaboration with NASA
SpaceActivities Age 8+ Teacher s Notes In collaboration with NASA The Hammer Teaching Objectives: Technology/Engineering Using mechanisms Assembling components Combining materials Science Inclined planes
GEARS AND GEAR SYSTEMS
This file aims to introducing basic concepts of gears and pulleys. Areas covered include spur gears, compound gears, chain drive, rack/pinion systems and pulley systems. GEARS AND GEAR SYSTEMS Gears can
WORKSHEET: KINETIC AND POTENTIAL ENERGY PROBLEMS
WORKSHEET: KINETIC AND POTENTIAL ENERGY PROBLEMS 1. Stored energy or energy due to position is known as Potential energy. 2. The formula for calculating potential energy is mgh. 3. The three factors that
3 Work, Power and Energy
3 Work, Power and Energy At the end of this section you should be able to: a. describe potential energy as energy due to position and derive potential energy as mgh b. describe kinetic energy as energy
PHY231 Section 2, Form A March 22, 2012. 1. Which one of the following statements concerning kinetic energy is true?
1. Which one of the following statements concerning kinetic energy is true? A) Kinetic energy can be measured in watts. B) Kinetic energy is always equal to the potential energy. C) Kinetic energy is always
III. Applications of Force and Motion Concepts. Concept Review. Conflicting Contentions. 1. Airplane Drop 2. Moving Ball Toss 3. Galileo s Argument
III. Applications of Force and Motion Concepts Concept Review Conflicting Contentions 1. Airplane Drop 2. Moving Ball Toss 3. Galileo s Argument Qualitative Reasoning 1. Dropping Balls 2. Spinning Bug
Force and Motion: Ramp It Up
Force and Motion: Grade Level: 4-5 Time: 3 class periods By: Carrie D. Perry (Bedford County Public Schools) Overview After watching an engaging video on Olympic alpine skiers, students then participate
PHY231 Section 1, Form B March 22, 2012
1. A car enters a horizontal, curved roadbed of radius 50 m. The coefficient of static friction between the tires and the roadbed is 0.20. What is the maximum speed with which the car can safely negotiate
18. SKATES, PLATFORM HAND TRUCKS, LIFTING TABLES AND HAND TROLLEYS
18. SKATES, PLATFORM HAND TRUCKS, LIFTING TABLES AND HAND TROLLEYS SKATES LIFTING TABLES HAND TROLLEYS PLATFORM HAND TRUCKS SKATES SKATE 1500KG for moving machines and equipment duration oiled metal wheels