Fluids I. Level : Conceptual Physics/Physics I. Q1) Order the following materials from lowest to greatest according to their densities.
|
|
|
- Imogen Brown
- 7 years ago
- Views:
Transcription
1 Fluids I Level : Conceptual Physics/Physics I Teacher : Kim 1. Density One of the properties of any substances (solids, liquids and gases) is the measure of how tightly the material is packed together. This property is called density. Density is a measure of how much matter is squeezed into a given space, that is, the amount of mass per unit volume. density = mmmmmmmm vvvvvvvvvvvv [kg/m3 ] Q1) Order the following materials from lowest to greatest according to their densities. water blood Earth s core seawater interstellar-space Sun s core Earth s crust black-hole Q2) i) What is the density of an object of mass 12kg and a volume of 4m 3? m=12kg, volume=length width height = 4m 3 ii) What is the mass, volume and density if we break the object in half? 2. Pressure Demo1) Hold a weight(50g) and a sponge ball. Observe which object feels heavier. i) Weight feels heavier! ii) Sponge ball feels heavier! Demo2) Hold a book in three different ways as below. Which case seems heaviest? i) flat on your hand ii) upright on your hand iii) only the corner on your hand
2 How much press we feel from the book depends in the area of contact for each case. That is, the amount of force per unit area is called pressure. pressure= ffffffffff ssssssssssssss aaaaaaaa P= FF AA where P is the pressure and A is the area over which the force acts The unit for pressure is pascal(pa). One Newton per square meter is equal to one pascal. That is, 1N/m=1Pa Q3) A cube is lying on the floor. If the mass of the cube is 2kg, find the pressure the cube is exerting on the surface of the floor. (weight is F g=mg, where g=9.8m/s 2 ) 0.2m 0.2m 0.2m 3. Liquid Pressure according to depth Liquid has weight(=force), so it must also exert pressure. Q4) Compare the following two situations. Case1) You are swimming 1 meter deep in an Olympic size pool Case2) You are swimming 1 meter deep in an ocean In which case would you feel more pressure? - Liquid pressure depends only on the density and the depth of the liquid, not on the shape or size of its container. - Liquid pressure does not depend on the amount of liquid - Liquid does not compress, so the density at the surface or bottom of a lake approximately the same Pressure due to liquid = (weight) density depth
3 Q5) Why dams are built thicker at the bottom? Large, but shallow lake Small, but deep lake 4. Buoyancy Why do object weigh less in water than on air? When an object is submerged in water, the water exerts an upward force that is opposite in gravity. This upward force is called buoyant force Try pushing a volley ball into water. The water will try to push back on the volley ball back up to the surface. That pushing back force is the buoyant force Q6) Explain why water exerts an upward force on objects in the water. (hint: remember that liquid pressure exerted on an object varies according to depth only) Q7) Buoyant force and weight are both forces. If one is acting greater than the other on an object, the object will move in that direction. Connect the statement for each case. If the weight of a submerged object is greater than the float buoyant force, then the object will the weight of a submerged object is less than the buoyant stay still force, then the object will the weight of a submerged object is equal to the buoyant sink force, then the object will Q8) A bowling ball has a diameter of 21.8cm. A volley ball has a diameter of 20.7cm to 21.3cm. If the two balls are pushed completely under water and then released, the volleyball will float back up while the bowling ball will sink. Which statement is true? a) the buoyant force acting on the bowling ball is less than the volleyball b) the buoyant force acting on the bowling ball is greater than the volleyball c) the buoyant force acting on the bowling ball is similar than the volleyball
4 The following statement is false. The buoyant force acting on a floating object is always stronger than the buoyant force acting on a sinking object The buoyant force that acts on a completely submerged object is determined by the weight or mass of the object The buoyant force that acts on a completely submerged object equals the weight of the object To further understand buoyancy, we need to see what happens when an object is placed in water. - If a stone is placed in a container of water, the water level will rise because the stone pushes the water aside. - How much water is pushed away(=displaced) is determined by the volume of the object, and irrelevant to the weight, mass, color, smell etc, of the object. - The amount of water displaced is equal to the volume of the stone the amount of liquid =volume of the stone - A completely submerged object always displaces a volume of liquid equal to its own volume. And the more liquid the object displaces, the stronger the buoyant force. 5. Archimede s Principle *~An immersed object is buoyed up by a force equal to the weight of the fluid it displaces. Archimede s principle = Newton s 3 rd law If you put something in water that pushes 100N of water out of the way(=displaces 100N weight of water), then the water pushes back with a force of 100N. The buoyant force is equal and opposite to the weight of water you displace What does the above principle mean?!! - A liter is a measure of volume. 1-liter is equal to the volume of a cube with 10cm sides - If you immerse 1-liter container into water, whether the container is empty or filled with anything, the container will displace 1 liter 10cm volume of water, 10cm - If we weigh that 1-liter of water on a scale, it will weigh 9.8N. Since the buoyant force is equal to the weight of water being displaced, the buoyant force acting on the 1-liter container filled with anything will always be 9.8N in water 10cm
5 - If we immerse an empty 1-liter container in water, the empty container will float since the buoyant force is greater than the empty container. - If we fill the 1-liter container with water and immerse it into water, the container will stay still in the water, since the buoyant force is equal to the water-filled container.(that is, if we assume the mass of the container itself is very light) - If we fill the 1-liter container with mercury(which is more dense and heavier than water) and immerse it into water, the container will sink, since the buoyant force is less than the mercuryfilled container. - If we fill the 1-liter container with water and immerse it into pool of mercury, the container will float, since the buoyant force is greater than the water-filled container. - If we fill the 1-liter container with mercury and immerse it into pool of mercury, the container will stay still, since the buoyant force is equal to the water-filled container. A liter of water has a mass of 1kg and weighs 9.8N. Any object with a volume of 1 liter will experience a buoyant force of 9.8N when fully submerged - If we immerse a sealed 1-liter container halfway into water, it will displace half a liter of water. - If we immerse it all the way, it will be buoyed up by the weight of a full liter of water(about 9.8N) - The buoyant force will equal the weight of 1 liter of water at any depth( **water is incompressible, so density is the same in any depth) - The container will displace the same volume of water, and hence the same weight of water at any depth - The weight of this displaced water( not the weight of the submerged object!!) is the buoyant force Caution!! The buoyant force that acts on a submerged object is irrelevant of the mass or weight of that object. It is only determined by the volume of the object. Q9) A 1-liter container filled with mercury has a mass of 13.6kg and weighs 133N. When it is submerged in water, what is the buoyant force on it? Will it float, sink or stay still in the water?
6 Q10) A block is held suspended beneath the water in three positions. In which position is the pressure the greatest? In which position is the buoyant force the greatest? Explain!! A B C Additional Question A 1-liter container filled with water has a mass of 1kg and weighs 9.8N. A 1-liter container filled with mercury. A 1-liter container filled with mercury has a mass of 13.6kg and weighs 133N. Use the information above to answer the following questions. 1. What is the buoyant force acting on an empty 1-liter container when submerged into water? Will it float, sink or stay still in the water? Justify your answer~! 2. What is the buoyant force acting on a 1-liter container filled with mercury liquid when submerged into water? Will it float, sink or stay still in the water? Justify your answer~! 3. What is the buoyant force acting on an empty 1-liter container when submerged into mercury liquid? Will it float, sink or stay still in liquid mercury? Justify your answer~! 4. What is the buoyant force acting on a water-filled 1-liter container when submerged into mercury liquid? Will it float, sink or stay still in liquid mercury? Justify your answer~!
7 6. Sink or Float? Q11) Heavy objects sink in water, while light objects float. True or false? The buoyant force on a submerged object depends on the how much water is displaced by the object = The buoyant force on a submerged object depends on the object s volume A smaller object displaces less water, so a smaller buoyant force acts on it A larger object displaces more water, so a larger buoyant force acts on it => The submerged objects volume, not its weight, determines the buoyant force!! 7. Floatation When primitive people observed that wood floats on water, they made their boats of wood. Could they have conceived of an iron ship? The idea of floating iron might be seem strange and impossible at that time since iron sinks, but today we see huge ships made of iron that floats. *~How to make iron float Consider a solid 1-ton block of iron. Iron is nearly 8 times denser than water, so a block of iron will sink. So how can we make that piece of iron float? Since iron is so dense, the weight of water it displaces will be no match for the weight of the iron. That is, the buoyant force is less than the weight of the piece of iron. = sink However, if we shape the iron into a bowl shape, we can increase the amount of water it displaces. This will increase the buoyant force acting on the iron. sink!! float!! *The principle of floatation* A floating object must displace a weight of fluid equal to its own weight =>Every ship must be designed to displace a weight of water equal to its own weight Ex) A ton ship must be built wide enough to displace tons of water before it sinks too deep below the water
Density. Density is how concentrated or compact matter is.
Density Density is how concentrated or compact matter is. Packing snow into snowballs increases its density. You are squeezing large amounts of matter into small volumes of space. Equation for Density
Write True or False in the space provided.
CP Physics -- Exam #7 Practice Name: _ Class: Date: Write True or False in the space provided. 1) Pressure at the bottom of a lake depends on the weight density of the lake water and on the volume of the
Buoyancy Problem Set
Buoyancy Problem Set 1) A stone weighs 105 lb in air. When submerged in water, it weighs 67.0 lb. Find the volume and specific gravity of the stone. (Specific gravity of an object: ratio object density
Buoyancy. What floats your boat?
Buoyancy What floats your boat? Sink or float? Test The cube sinks to the bottom. WHY? Weight Due to the pulling force of gravity both the cube and the water have the property of weight. Gravity Gravity
Buoyant Force and Archimedes Principle
Buoyant Force and Archimedes Principle Predict the behavior of fluids as a result of properties including viscosity and density Demonstrate why objects sink or float Apply Archimedes Principle by measuring
Grade 8 Science Chapter 9 Notes
Grade 8 Science Chapter 9 Notes Force Force - Anything that causes a change in the motion of an object. - usually a push or a pull. - the unit for force is the Newton (N). Balanced Forces - forces that
Student Exploration: Archimedes Principle
Name: Date: Student Exploration: Archimedes Principle Vocabulary: Archimedes principle, buoyant force, density, displace, mass, volume, weight Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
Buoyancy and Archimedes Principle. Buoyancy and Archimedes Principle Assume block is in equilibrium.
Assume block is in equilibrium. Then upward forces must equal downward forces. Upward force: pressure from fluid Downward force: atmospheric pressure plus weight Therefore In this case, the object is less
Archimedes Principle. Biological Systems
Archimedes Principle Introduction Many of the substances we encounter in our every day lives do not have rigid structure or form. Such substances are called fluids and can be divided into two categories:
Chapter 3 Student Reading
Chapter 3 Student Reading If you hold a solid piece of lead or iron in your hand, it feels heavy for its size. If you hold the same size piece of balsa wood or plastic, it feels light for its size. The
Lesson 2 The Buoyant Force
Lesson 2 Student Labs and Activities Page Launch Lab 26 Content Vocabulary 27 Lesson Outline 28 MiniLab 30 Content Practice A 31 Content Practice B 32 School to Home 33 Key Concept Builders 34 Enrichment
Concept Questions Archimedes Principle. 8.01t Nov 24, 2004
Concept Questions Archimedes Principle 8.01t Nov 24, 2004 Pascal s Law Pressure applied to an enclosed fluid is transmitted undiminished to every portion of the fluid and the walls of the containing vessel
Name Date Hour. Buoyancy
Name Date Hour Buoyancy Consider: If I gave you an object that you had never seen before and it was made of unknown material and then asked you whether or not it would float in water, what would you base
Three Methods for Calculating the Buoyant Force Gleue: Physics
Three Methods for Calculating the Buoyant Force Gleue: Physics Name Hr. The Buoyant Force (F b ) is the apparent loss of weight for an object submerged in a fluid. For example if you have an object immersed
Buoyancy Boats Florida Sunshine State Science Standards: Objectives Engage: Explore:
Buoyancy Boats Florida Sunshine State Science Standards: SC.C.2.3.1 The student knows that many forces act at a distance. SC.C.2.3.2 The student knows common contact forces. SC.C.2.3.3 The student knows
Density and Archimedes Principle
Density and Archimedes Principle Objectives: To understand the concept of density and its relationship to various materials. To understand and use Archimedes Principle. Equipment: Dial calipers, Graduated
CHAPTER 3: FORCES AND PRESSURE
CHAPTER 3: FORCES AND PRESSURE 3.1 UNDERSTANDING PRESSURE 1. The pressure acting on a surface is defined as.. force per unit. area on the surface. 2. Pressure, P = F A 3. Unit for pressure is. Nm -2 or
Why do objects float or sink?
Why do objects float or sink? Summary Students will use models to gain an understanding of the principles of buoyancy and how they apply to technologies used to explore the ocean Learning Objectives Students
Density and Archimedes Principle
Density and Archimedes Principle Objectives: To understand the concept of density and its relationship to various materials. To understand and use Archimedes Principle. Equipment: Dial calipers, Graduated
MSCOPE Final Project Report Melanie Hopkins, Mary Leighton, Roscoe Nicholson, and Panos Oikonomou. Sink or Swim. Photo: M.
MSCOPE Final Project Report Melanie Hopkins, Mary Leighton, Roscoe Nicholson, and Panos Oikonomou Sink or Swim Type of Project: Facilitated activity with optional demonstration Target Museum: SciTech Hands-On
Buoyant Force and Archimedes' Principle
Buoyant Force and Archimedes' Principle Introduction: Buoyant forces keep Supertankers from sinking and party balloons floating. An object that is more dense than a liquid will sink in that liquid. If
Chapter 27 Static Fluids
Chapter 27 Static Fluids 27.1 Introduction... 1 27.2 Density... 1 27.3 Pressure in a Fluid... 2 27.4 Pascal s Law: Pressure as a Function of Depth in a Fluid of Uniform Density in a Uniform Gravitational
Review Chapter 10, 12, 13, 14, 15, 16. Conceptual Physics, 10e (Hewitt) Chapter 10
Review Chapter 10, 12, 13, 14, 15, 16 Conceptual Physics, 10e (Hewitt) Chapter 10 23) What prevents satellites such as a space shuttle from falling? A) gravity B) the absence of air drag C) Nothing; they're
Chapter 3, Lesson 4: Density: Sink and Float for Solids
Chapter 3, Lesson 4: Density: Sink and Float for Solids Key Concepts The density of an object determines whether it will float or sink in another substance. An object will float if it is less dense than
Chapter 3. Flotation. ELEMENTARY HYDRAULICS National Certificate in Technology (Civil Engineering) Buoyancy
ELEMENTARY HYDRAULICS National Certificate in Technology (Civil Engineering) Chapter 3 Flotation Buoyancy Buoyancy arises from the fact that fluid pressure increases with depth and from the fact that the
Density (r) Chapter 10 Fluids. Pressure 1/13/2015
1/13/015 Density (r) Chapter 10 Fluids r = mass/volume Rho ( r) Greek letter for density Units - kg/m 3 Specific Gravity = Density of substance Density of water (4 o C) Unitless ratio Ex: Lead has a sp.
Keep Your Head Above Water
Grade 8 Activity Keep Your Head Above Water Do things that float behave differently in salt and fresh water? What lets them float, and when do they sink? Concepts Water has physical properties of density
Buoyancy. Program Description. Louisiana GLEs: Grades: 3 rd - 5 th grades Program Duration: 60 Minutes Program Type: Demonstration
Buoyancy Grades: 3 rd - 5 th grades Program Duration: 60 Minutes Program Type: Demonstration Program Description In this program students will investigate Archimedes Principle by using pan balances and
Density Lab. If you get stuck or are uncertain, please ask questions and/or refer to the hints at the end of the lab. Name: Section: Due Date:
Name: Section: Due Date: Lab 01B-1 If you get stuck or are uncertain, please ask questions and/or refer to the hints at the end of the lab. Density Lab Density is an important concept in oceanography,
POTATO FLOAT. Common Preconceptions:
POTATO FLOAT Unit: Salinity Patterns & the Water Cycle l Grade Level: Middle l Time Required: 30 min. (in class) after solutions are prepared by the teacher l Content Standard: NSES Physical Science, properties
Chapter 13 - Solutions
= Chapter 13 - Solutions Description: Find the weight of a cylindrical iron rod given its area and length and the density of iron. Part A On a part-time job you are asked to bring a cylindrical iron rod
Forces. Definition Friction Falling Objects Projectiles Newton s Laws of Motion Momentum Universal Forces Fluid Pressure Hydraulics Buoyancy
Forces Definition Friction Falling Objects Projectiles Newton s Laws of Motion Momentum Universal Forces Fluid Pressure Hydraulics Buoyancy Definition of Force Force = a push or pull that causes a change
Test Bank - Chapter 3 Multiple Choice
Test Bank - Chapter 3 The questions in the test bank cover the concepts from the lessons in Chapter 3. Select questions from any of the categories that match the content you covered with students. The
Lift vs. Gravity Questions:
LIFT vs GRAVITY Sir Isaac Newton, an English scientist, observed the force of gravity when he was sitting under a tree and an apple fell on his head! It is a strong force that pulls everything down toward
Physics 1114: Unit 6 Homework: Answers
Physics 1114: Unit 6 Homework: Answers Problem set 1 1. A rod 4.2 m long and 0.50 cm 2 in cross-sectional area is stretched 0.20 cm under a tension of 12,000 N. a) The stress is the Force (1.2 10 4 N)
Archimedes' Principle
OpenStax-CNX module: m42196 1 Archimedes' Principle OpenStax College This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 Abstract Dene buoyant force. State
LAB #3: MEASURING SPECIFIC GRAVITY AND DENSITY. Set-up and Materials for Experiment
Set-up and Materials for Experiment 1 OVERVIEW The mass density of a substance is a measure of the mass that that substance contains in a given volume. Mathematically is written: ρ = m V ( Density = Volume
Activity P13: Buoyant Force (Force Sensor)
July 21 Buoyant Force 1 Activity P13: Buoyant Force (Force Sensor) Concept DataStudio ScienceWorkshop (Mac) ScienceWorkshop (Win) Archimedes Principle P13 Buoyant Force.DS P18 Buoyant Force P18_BUOY.SWS
Name Class Date. F 2 2269 N A 1 88.12 cm 2 A 2 1221 cm 2 Unknown: Step 2: Write the equations for Pascal s principle and pressure, force, and area.
Skills Worksheet Math Skills Pascal s Principle After you study each sample problem and solution, work out the practice problems on a separate sheet of paper. Write your answers in the spaces provided.
Physics 181- Summer 2011 - Experiment #8 1 Experiment #8, Measurement of Density and Archimedes' Principle
Physics 181- Summer 2011 - Experiment #8 1 Experiment #8, Measurement of Density and Archimedes' Principle 1 Purpose 1. To determine the density of a fluid, such as water, by measurement of its mass when
Quick Peek. H Students will learn about. H Students will design and. Students will learn about density, buoyancy, and how submarines dive.
Quick Peek sink, float, Hover design a submarine! Students will learn about density, buoyancy, and how submarines dive. Suggested Grade Levels: 4 8 Illinois State Learning Goals science 11.A, 11.B, 12.D,
Activity P13: Buoyant Force (Force Sensor)
Activity P13: Buoyant Force (Force Sensor) Equipment Needed Qty Equipment Needed Qty Economy Force Sensor (CI-6746) 1 Mass and Hanger Set (ME-9348) 1 Base and Support Rod (ME-9355) 1 Ruler, metric 1 Beaker,
Density: Sea Water Mixing and Sinking
Density: Sea Water Mixing and Sinking Unit: Salinity Patterr~s & the Water Cycle I Grade Level: Middle or High I Time Required: two 45 minute class periods I Content Standard: NSES Physical Science, properties
Eighth Grade, Density To Float or Not to Float? 2004 Colorado Unit Writing Project 1
Density To Float or Not to Float? That is the Question! Grade Level or Special Area: Eighth Grade Science Written by: Aida Peterson, Clear Lake Middle School, Denver, Colorado Length of Unit: Twelve lessons
oil liquid water water liquid Answer, Key Homework 2 David McIntyre 1
Answer, Key Homework 2 David McIntyre 1 This print-out should have 14 questions, check that it is complete. Multiple-choice questions may continue on the next column or page: find all choices before making
Floating and sinking
Floating and sinking Introduction Floating and sinking is a common activity in early years classrooms. Students ideas about floating and sinking are intriguing. The strategies for developing their understandings
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
A Novel Way to Measure the Density of a Solid. By David Chandler, Porterville College. David@DavidChandler.com
A Novel Way to Measure the Density of a Solid By David Chandler, Porterville College David@DavidChandler.com I was recently explaining to a middle school teacher how to measure the density of a solid object
Experiment #4 Sugar in Soft Drinks and Fruit Juices. Laboratory Overview CHEM 1361. August 2010
Experiment #4 Sugar in Soft Drinks and Fruit Juices Laboratory Overview CHEM 1361 August 2010 Gary S. Buckley, Ph.D. Department of Physical Sciences Cameron University Learning Objectives Relate density
sciencemuseumoutreach Kitchen Science 1 Demonstrations to do at home
sciencemuseumoutreach Kitchen Science 1 Demonstrations to do at home The Creative Canal Project (CCP) is part of the Science Museum s Outreach Department, which works with teachers, students, families
01 The Nature of Fluids
01 The Nature of Fluids WRI 1/17 01 The Nature of Fluids (Water Resources I) Dave Morgan Prepared using Lyx, and the Beamer class in L A TEX 2ε, on September 12, 2007 Recommended Text 01 The Nature of
So if ω 0 increases 3-fold, the stopping angle increases 3 2 = 9-fold.
Name: MULTIPLE CHOICE: Questions 1-11 are 5 points each. 1. A safety device brings the blade of a power mower from an angular speed of ω 1 to rest in 1.00 revolution. At the same constant angular acceleration,
Physical and Chemical Properties of Matter
Physical and Chemical Properties of Matter What is matter? Anything that has mass and takes up space Chemical or Physical Property? Physical properties of matter: characteristics that can be observed or
Sink or Float? DELTA SCIENCE READER Overview... 113 Before Reading... 114 Guide the Reading... 115 After Reading... 120
T ABLE OF CONTENTS ABOUT DELTA SCIENCE MODULES Program Introduction................... iii Teacher s Guide..................... iv Delta Science Readers............... vi Equipment and Materials Kit.........
Classifying Matter. reflect. look out!
reflect Do you know what air, water, and an apple all have in common? They are all examples of matter. Matter is a word we use a lot in science. It means stuff. All of the stuff in the world that has mass
Junior Cert Science Numeracy Resources
Focus on Numeracy Junior Cert Science Numeracy Resources Let s Talk About Measurement Measurement of Time Directions: Put a < (less than), > (greater than), or = symbol between the two amounts of time.
Solids, Liquids, and Gases
Solids, Liquids, and Gases nd Intended for Grade: 2 Grade Subject: Science Description: Activities to help students understand solids, liquids, gases, and the changes between these states. Objective: The
Buoyant Force. Goals and Introduction
Buoyant Force Goals and Introduction When an object is placed in a fluid, it either floats or sinks. While the downward gravitational force, F g, still acts on the object, an object in a fluid is also
5-Minute Refresher: FRICTION
5-Minute Refresher: FRICTION Friction Key Ideas Friction is a force that occurs when two surfaces slide past one another. The force of friction opposes the motion of an object, causing moving objects to
Name: Date: Period: Gravity Study Guide
Vocabulary: Define the following terms. Law of Universal Gravitation Gravity Study Guide Weight Weightlessness Gravitational Field Black hole Escape velocity Math: Be able to use the equation for the law
4S Archimedes Test for Density
4S Archimedes Test for Density Density, or specific gravity of minerals is important in separating them. It is important to have a test for the density of mineral samples found at Snailbeach. Galena is
Ocean in Motion 2: What Causes Ocean Currents and How Do We Measure Them?
Ocean in Motion 2: What Causes Ocean Currents and How Do We Measure Them? A. Overview 1. The Ocean in Motion -- Circulation In this program, students will learn about the driving forces responsible for
Dynamics of dinosaurs
MATH0011 Numbers and Patterns in Nature and Life Lecture 1 Dynamics of Dinosaurs http://147.8.101.93/math0011/ Questions: Dynamics of dinosaurs How heavy are dinosaurs? Would sand support a big dinosaur
Area is a measure of how much space is occupied by a figure. 1cm 1cm
Area Area is a measure of how much space is occupied by a figure. Area is measured in square units. For example, one square centimeter (cm ) is 1cm wide and 1cm tall. 1cm 1cm A figure s area is the number
Name Class Period. F = G m 1 m 2 d 2. G =6.67 x 10-11 Nm 2 /kg 2
Gravitational Forces 13.1 Newton s Law of Universal Gravity Newton discovered that gravity is universal. Everything pulls on everything else in the universe in a way that involves only mass and distance.
ALPERTON COMMUNITY SCHOOL MATHS FACULTY ACHIEVING GRADE A/A* EXAM PRACTICE BY TOPIC
ALPERTON COMMUNITY SCHOOL MATHS FACULTY ACHIEVING GRADE A/A* EXAM PRACTICE BY TOPIC WEEK Calculator paper Each set of questions is followed by solutions so you can check & mark your own work CONTENTS TOPIC
Pressure. Pressure. Atmospheric pressure. Conceptual example 1: Blood pressure. Pressure is force per unit area:
Pressure Pressure is force per unit area: F P = A Pressure Te direction of te force exerted on an object by a fluid is toward te object and perpendicular to its surface. At a microscopic level, te force
Science - 7 th grade - Matter - Density - Science Process, Inquiry
Science - 7 th grade - Matter - Density - Science Process, Inquiry Overview The main idea associated with these activities is density. Density, as it is developed within these activities threads most closely
Introduction and Origin of the Earth
Page 1 of 5 EENS 1110 Tulane University Physical Geology Prof. Stephen A. Nelson Introduction and Origin of the Earth This page last updated on 30-Jul-2015 Geology, What is it? Geology is the study of
Layers of the Earth s Interior
Layers of the Earth s Interior 1 Focus Question How is the Earth like an ogre? 2 Objectives Explain how geologists have learned about the interior of the Earth. Describe the layers of the Earth s interior.
Natural Convection. Buoyancy force
Natural Convection In natural convection, the fluid motion occurs by natural means such as buoyancy. Since the fluid velocity associated with natural convection is relatively low, the heat transfer coefficient
When students enter the classroom, they
When students enter the classroom, they often hold prior knowledge or conceptions about the natural world. These conceptions will influence how they come to understand what they are taught in school. Some
XI / PHYSICS FLUIDS IN MOTION 11/PA
Viscosity It is the property of a liquid due to which it flows in the form of layers and each layer opposes the motion of its adjacent layer. Cause of viscosity Consider two neighboring liquid layers A
9460218_CH06_p069-080.qxd 1/20/10 9:44 PM Page 69 GAS PROPERTIES PURPOSE
9460218_CH06_p069-080.qxd 1/20/10 9:44 PM Page 69 6 GAS PROPERTIES PURPOSE The purpose of this lab is to investigate how properties of gases pressure, temperature, and volume are related. Also, you will
Date R. Mirshahi. Forces are all around us. Without forces, nothing can move and no work can be done.
Name Date R. Mirshahi Forces and Movement: Balanced and Unbalanced Forces Forces are all around us. Without forces, nothing can move and no work can be done. There are different types of forces. Some forces
FLUID FORCES ON CURVED SURFACES; BUOYANCY
FLUID FORCES ON CURVED SURFCES; BUOYNCY The principles applicable to analysis of pressure-induced forces on planar surfaces are directly applicable to curved surfaces. s before, the total force on the
SURFACE TENSION. Definition
SURFACE TENSION Definition In the fall a fisherman s boat is often surrounded by fallen leaves that are lying on the water. The boat floats, because it is partially immersed in the water and the resulting
VOLUME AND SURFACE AREAS OF SOLIDS
VOLUME AND SURFACE AREAS OF SOLIDS Q.1. Find the total surface area and volume of a rectangular solid (cuboid) measuring 1 m by 50 cm by 0.5 m. 50 1 Ans. Length of cuboid l = 1 m, Breadth of cuboid, b
Description: Students design, construct, and test a device that exhibits positive, neutral, and negative buoyancy.
Oh Buoy! Description: Students design, construct, and test a device that exhibits positive, neutral, and negative buoyancy. Learning Objectives: Students will use terminology associated with buoyancy (positive
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
Bottle Rockets. Vanderbilt Student Volunteers for Science. Fall 2008
Bottle Rockets Vanderbilt Student Volunteers for Science Fall 2008 I. Introduction: History of Rockets Explain to the students that rockets are more than two thousand years old. Give the students a BRIEF
Key. Name: OBJECTIVES
Name: Key OBJECTIVES Correctly define: observation, inference, classification, percent deviation, density, rate of change, cyclic change, dynamic equilibrium, interface, mass, volume GRAPHICAL RELATIONSHIPS
p atmospheric Statics : Pressure Hydrostatic Pressure: linear change in pressure with depth Measure depth, h, from free surface Pressure Head p gh
IVE1400: n Introduction to Fluid Mechanics Statics : Pressure : Statics r P Sleigh: P..Sleigh@leeds.ac.uk r J Noakes:.J.Noakes@leeds.ac.uk January 008 Module web site: www.efm.leeds.ac.uk/ive/fluidslevel1
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
Chapter 15. FLUIDS. 15.1. What volume does 0.4 kg of alcohol occupy? What is the weight of this volume? m m 0.4 kg. ρ = = ; ρ = 5.
Chapter 15. FLUIDS Density 15.1. What volume does 0.4 kg of alcohol occupy? What is the weight of this volume? m m 0.4 kg ρ = ; = = ; = 5.06 x 10-4 m ρ 790 kg/m W = D = ρg = 790 kg/m )(9.8 m/s )(5.06 x
Section 1 The Earth System
Section 1 The Earth System Key Concept Earth is a complex system made up of many smaller systems through which matter and energy are continuously cycled. What You Will Learn Energy and matter flow through
10 g 5 g? 10 g 5 g. 10 g 5 g. scale
The International System of Units, or the SI Units Vs. Honors Chem 1 LENGTH In the SI, the base unit of length is the Meter. Prefixes identify additional units of length, based on the meter. Smaller than
10.2 Measuring Temperature
10.2 Measuring Temperature How do you find the temperature of a substance? There are many different kinds of thermometers used to measure temperature. Can you think of some you find at home? In your classroom
Physics: Principles and Applications, 6e Giancoli Chapter 4 Dynamics: Newton's Laws of Motion
Physics: Principles and Applications, 6e Giancoli Chapter 4 Dynamics: Newton's Laws of Motion Conceptual Questions 1) Which of Newton's laws best explains why motorists should buckle-up? A) the first law
Floating between two liquids. Laurence Viennot. http://education.epsdivisions.org/muse/
Floating between two liquids Laurence Viennot http://education.epsdivisions.org/muse/ Abstract The hydrostatic equilibrium of a solid floating between two liquids is analysed, first as a classical exercise,
Teacher notes/ activities. Gravity is the attractive force between all objects in the universe. It is the force that pulls objects to the earth.
Gravity and forces unit Teacher notes/ activities Gravity is the attractive force between all objects in the universe. It is the force that pulls objects to the earth. Galileo, a famous Italian scientist
ACTIVITY 6: Falling Objects
UNIT FM Developing Ideas ACTIVITY 6: Falling Objects Purpose and Key Question You developed your ideas about how the motion of an object is related to the forces acting on it using objects that move horizontally.
Friction and Gravity. Friction. Section 2. The Causes of Friction
Section 2 Friction and Gravity What happens when you jump on a sled on the side of a snow-covered hill? Without actually doing this, you can predict that the sled will slide down the hill. Now think about
States of Matter CHAPTER 10 REVIEW SECTION 1. Name Date Class. Answer the following questions in the space provided.
CHAPTER 10 REVIEW States of Matter SECTION 1 SHORT ANSWER Answer the following questions in the space provided. 1. Identify whether the descriptions below describe an ideal gas or a real gas. ideal gas
LAB 6 - GRAVITATIONAL AND PASSIVE FORCES
L06-1 Name Date Partners LAB 6 - GRAVITATIONAL AND PASSIVE FORCES OBJECTIVES And thus Nature will be very conformable to herself and very simple, performing all the great Motions of the heavenly Bodies
OUTCOME 1 STATIC FLUID SYSTEMS TUTORIAL 1 - HYDROSTATICS
Unit 41: Fluid Mechanics Unit code: T/601/1445 QCF Level: 4 Credit value: 15 OUTCOME 1 STATIC FLUID SYSTEMS TUTORIAL 1 - HYDROSTATICS 1. Be able to determine the behavioural characteristics and parameters
LAB 6: GRAVITATIONAL AND PASSIVE FORCES
55 Name Date Partners LAB 6: GRAVITATIONAL AND PASSIVE FORCES And thus Nature will be very conformable to herself and very simple, performing all the great Motions of the heavenly Bodies by the attraction
NASA Explorer Schools Pre-Algebra Unit Lesson 2 Student Workbook. Solar System Math. Comparing Mass, Gravity, Composition, & Density
National Aeronautics and Space Administration NASA Explorer Schools Pre-Algebra Unit Lesson 2 Student Workbook Solar System Math Comparing Mass, Gravity, Composition, & Density What interval of values
5. Forces and Motion-I. Force is an interaction that causes the acceleration of a body. A vector quantity.
5. Forces and Motion-I 1 Force is an interaction that causes the acceleration of a body. A vector quantity. Newton's First Law: Consider a body on which no net force acts. If the body is at rest, it will