# Lab 11 Density and Buoyancy

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 b Lab 11 Density and uoyancy What You Need To Know: Density A concept that you will be using frequently in today s lab is called density. Density is a measurement of an object s mass per unit volume of space that it occupies. The equation follows ρ = m V ρ is the density of an object (in kilograms per meter cubed, kg/m 3 ) m is the mass of the object (in kilograms, kg) V is the volume of space that the object occupies (in meters cubed, m 3 ) In physics, as opposed to chemistry, we use units of kg/m 3 and not units of g/cm 3. or example in chemistry the density of water is usually stated as 1 g/cm 3. In physics, however, the density of water is stated as 1000 kg/m 3. You will be using this value often during today s lab. loat or Sink When you place an object in a fluid it will do one of two things. It will either float or it will sink. Perhaps when you were in high school you learned that the typical way in which you can tell what the object will do is by knowing its density and how it compares to the fluid it is in. If the density of the object is less than the density of the fluid it is in, then it will float. If the density of the object is more than the density of the fluid it is in, then it will sink. This is all well and good but it doesn t really get to the heart of the matter. This lab will hopefully give you a better feel for why objects float or sink. Archimedes Principle Any object that is either partially or completely submerged in a fluid will always feel a buoyant force acting on it. A buoyant force always acts in a direction opposite to that of gravity. It can be calculated by using Archimedes Principle which states that an object will be buoyed upwards by a force that is equal to the weight of the fluid that the object places. We also know that W = mg so we can alter the equation as below = W = m g is the buoyant force (in Newtons, N) W is the weight of the placed fluid (in Newtons, N) m is the mass of the placed fluid (in kilograms, kg) g is the gravitational acceleration (9.8 m/s 2 ) At first, people tend to find the idea of placed fluid a little hard to grasp. Let s say that you have a cube that you want to completely embed in the ground. Obviously, if you just set the object on the ground it would rest on its surface. In order for the cube to be in the ground you would first have to dig a cube sized hole. In other words, you are placing a certain amount of dirt so that the cube will fit. 11-1

2 Density and uoyancy m ρ = V m = ρv = = (a) m ρ fl (b) V g IGURE 1 g This is the same idea as placed fluid, except that when you put an object in a fluid you don t have to dig a hole, the fluid will move aside so the object will fit, but we are still placing fluid. It s All About Volume Now we are going to take the buoyant force equation and alter it a bit to get to the heart of the matter. irst, we are going to take the density equation and solve for mass. See igure 1a. Next, taking that equation, we are going to plug it into the buoyant force equation. See igure 1b. The m is for the mass of the placed fluid so when we plug in for the density it has to be for the fluid, ρ fl. Also, since it s the placed fluid, the volume must be the placed volume, V. When you place an object in a fluid there is only one thing that you can change in the equation ( = ρ fl V g) and that s V. You can t change the density since that would mean you d have to have a completely different fluid. Also, you can t change the gravitational acceleration, g, since that would mean you d have to go to a different planet. So, when talking about buoyant force the most important idea to take into account is how much volume you are placing. or example, more than likely you ve been in a pool or the ocean and you ve tried to push a beach ball under water. You probably never noticed at the time, but as you force the ball down into the water you have to push harder and harder. That s because, as you are submerging the ball, you are constantly increasing the amount of water that you are placing and therefore increasing the buoyant force acting upward on the ball. See igure 2. Another example would be a ship on the ocean. Ocean liners are huge and weigh thousands of tons, so they need to place huge amounts of water to stay afloat. If you could see a side view of an ocean liner above and below the waterline it would NOT look like igure 3a. It would look more like igure 3b. IGURE 2 each ball going under water (a) (b) IGURE 3 Ocean liners in the ocean What You Need To Do: Part 1 - The loating Case The best way to approach a buoyancy problem is by first drawing a ree-ody Diagram and then applying Newton s 2 nd Law (Σ = ma). Let s look at a basic floating case; a block of wood floating in a container of water. A) Go to the back of the lab and fill the large glass beaker with about 800 ml of water. (There s also a fountain in the hall that you can use.) Take the balsa wood block (the lighter one) and slowly lower the block into the water. As you lower it, 11-2

4 Density and uoyancy Question 4 Why can t the aluminum block float. (You must explain in terms of volume, NOT density.) ) Go back to your chart and based on what you have learned so far, try to calculate the buoyant force for each block. Explain why you can or can t for each block. Put the values you can calculate in the chart. G) Using information you ve learned in this lab (on page 2), calculate the placed volume for the wood blocks. Multiply your answer by 1 x 10 6 to put in cm 3. H) Using the vernier caliper on your table top, measure the three dimensions for each block in centimeters. Calculate the volume of each object and place it in the chart. NOTE: Ignore the volume of the hook. ORCE PROE I) Even though you should have left blank the buoyant force column for the aluminum block, go ahead and calculate it assuming = W. (It s wrong, but use it anyway.) Place this value in the chart. This value is what buoyant force the block would need in order to float. Also calculate the volume placed for the aluminum block. In comparing the two different volumes for each block you can see that the wood blocks float because their placed volumes are smaller than their actual volumes. This allows them to float. or the aluminum block, the placed volume is larger than the block s actual volume. It can t place enough water to allow itself to float. scale (a) J) Take the balsa block and lower it into the water until it floats. Take the flat piece of metal and place it on top of the block. Do this slowly and try to center the metal on top of the block so it doesn t tip or list. Describe what happens and why. Question 5 Let s say you have a row boat. One at a time people get on (and you have an unlimited supply of people). What eventually happens to the boat? Explain why in detail. Part 2 - The Sinking Case As before, you want to use a ree-ody Diagram and a Summation of orces for this part. However, your block will not rest on the bottom of the beaker. Instead, it will hang suspended from a force probe. See igure 6a. There are three forces acting on the block. One is the block s actual weight, another is the buoyant force, and the third is the force due to the probe. See igure 6b. (b) W IGURE 6 Sinking case for aluminum block The reading from the force probe will be considered to be the apparent weight when it is in a fluid (as opposed to its actual weight when it is suspended in the air). In igure 7 is a force summation on the block. After which, we solve for the buoyant force. In the last line we change W to W air, which is the object s actual weight or as we say its weight when in the air (NOT the weight of the air). The force due to the force probe is changed to W fl (weight in the fluid) since this is what the force probe is reading. The highlighted equation is our buoyant force equation for the sinking case. scale Σ = ma + W = 0 = W = W air IGURE 7 scale W fl 11-4

6 Density and uoyancy bottom of the cup. The water that comes out of the spout represents the placed water from the block. D) With the water still in the catch bucket, measure the mass of the water and bucket together using digital scale. Record the mass. Subtract from this value the mass of just the cup that you measured earlier. You now have the mass of the placed water. E) Use the density equation to find the volume of the placed water. Like before, this is the same as the volume of the block since it is totally submerged. ) Calculate the density of the block and record the value in your chart. Metal Density Gold 19,300 kg/m 3 Lead 11,300 kg/m 3 rass 8,400 kg/m 3 Cast Iron 6,800 kg/m 3 Titanium 4,500 kg/m 3 IGURE 9 G) Calculate the average density. Calculate a percent error between this value and the actual density of aluminum which is 2700 kg/m 3. If you get a percent error more than 10% you must find your error. Unknown lock Use either Method 2 or Method 3 to determine what type of metal the unknown block is made out of. Use the density chart in igure 9. Clean Up Empty the water out of all the containers. Dry all containers. Dry the blocks. If there is any water on your table then wipe it up. Leave the towel flat on the table so it will have time to dry before the next lab. What You Need To Turn In: Write your lab report on a separate sheet of paper from this lab manual. Include all of the charts you were asked to make. Make sure you show your work for each section in the corresponding section in your report. Answer all of the questions by Michael J. Dubuque 11-6

### 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

### 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

### Density and Buoyant Force

Density_and_Buoyant_Force_6c.docx Density and Buoyant Force An exploration of the relationships between weight, density, and buoyant force. 1.1 EXPERIMENTAL GOAL 1 OBJECTIVES Students will use Archimedes'

### Worksheet for Exploration 14.1: Floating and Density

Worksheet for Exploration 14.1: Floating and Density How can a boat made out of a material more dense than water float? The block has a mass of 0.185 kg (position is given in centimeters). If this block

### Lab 8: Buoyancy and Archimedes Principle

Description Lab 8: Buoyancy and Archimedes Principle In this lab, you will explore the force that displacing a fluid (liquid or gas) will exert on the body displacing the fluid. You will study how the

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

Density Part 1: What is Density? Starter Activity Which is heavier, steel or wood? Density We can use a number to describe how heavy something is for its size. Density is the mass per unit of volume. To

### Archimedes Principle

rev 12/2016 Archimedes Principle Equipment Qty Item Parts Number 1 Force Sensor, Economy CI-6746 1 Lab Jack SE-9373 1 Beaker SE-7288 1 250 ml Graduated Cylinder 1 Large Rod ME-8738 1 Small Rod ME-8988

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

### 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

### 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

### 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

### 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

### Buoyancy. Please Circle Your Lab day: M T W T F

Please Circle Your Lab day: M T W T F Name: Project #1: Show that the buoyant force (F B ) equals fluid gv object by first calculating fluid gv object, and then by measuring F B (indirectly) using the

### Figure 1: The Net Force of the Fluid Acting on an Object Is the Buoyant Force

Buoyancy, Stability, and Ballast 1 Cornerstone Electronics Technology and Robotics III (Notes primarily from Underwater Robotics Science Design and Fabrication, an excellent book for the design, fabrication,

### 13.3 Buoyancy. Buoyant Force

The forces from pressure acting on the bottom of this golf ball are greater than those on the top. This produces a net force called the buoyant force that acts upward on the ball. Buoyant Force What is

### Fluids I. Level : Conceptual Physics/Physics I. Q1) Order the following materials from lowest to greatest according to their densities.

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.

### Archimedes' Principle

Archimedes' Principle Introduction Archimedes' Principle states that the upward buoyant force exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the

### Lab 9. Archimedes Principle and Applications. Upon successful completion of this exercise you will have...

Lab 9 Archimedes Principle and Applications Objectives: Upon successful completion of this exercise you will have... 1.... utilized Archimedes principle to determine the density and specific gravity of

### Fluids I. Density is a measure of how much matter is squeezed into a given space, that is, the amount of mass per unit volume.

Fluids I Level : Conceptual Physics 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

### Physics 250 Laboratory: Buoyancy

Physics 250 Laboratory: (Fluids) Score: Section #: Name: Name: Name: Lab-Specific Goals: To learn about density and buoyancy through experimenting with these concepts. Equipment List: Graduated cylinder

### Assignment 1 SOLUTIONS

Assignment 1 SOLUTIONS 1. 18k Gold The overall density is the total mass divided by the total volume, so let s think about the volume fo 1 gram of 18k gold, which I ll call V 1g 18k. The volume 1 gm of

### Archimedes Principle

Name Purpose School Date Archimedes Principle To connect the words of Archimedes Principle to the actual behavior of submerged objects. To examine the cause of buoyancy, that is the variation of pressure

### 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

### 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.)

### Fluids: Liquids & Gases

Chapter 7: Fluids Fluids: Liquids & Gases Fluids are substances that are free to flow. Atoms and molecules are free to move. They take the shape of their containers. Cannot withstand or exert shearing

### Clicker Questions Chapter 10

Clicker Questions Chapter 10 2010 Pearson Education, Inc. Essential College Physics Rex/Wolfson Question 10.1 Density If one material has a higher density than another, does this mean that the molecules

### "Physics Floats My Boat

"Physics Floats My Boat A Modeling Approach to Teaching Archimedes Principle & Buoyant Force Any object, wholly or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid

### Archimedes. F b (Buoyant Force) DEMO. Identical Size Boxes Which has larger F B. Which is heavier. styrofoam (1 cm 3 ) steel ( 1 cm 3 )

Fluids Density 1 F b (Buoyant Force) DEMO Archimedes Identical Size Boxes Which has larger F B Which is heavier styrofoam (1 cm 3 ) steel ( 1 cm 3 ) steel ( 1 cm 3 ) styrofoam (1 cm 3 ) 2 Finding the Weight

### 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

### 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. 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

### 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

### Newton s Third Law: A Verification with Buoyancy Forces

Newton s Third Law: A Verification with Buoyancy Forces Barry Feierman - April 2013 SEPS/AAPT Drexel University Newton s Third Law is the law of interaction. For every force that acts on one object, there

### Pool Cubes: Buoyancy

Name Section Date CONCEPTUAL PHYSICS Liquids: Buoyancy Tech Lab Buoyancy and Flotation Simulation Pool Cubes: Buoyancy Purpose To investigate the nature of the buoyant force and to see the role it plays

### Laboratory 11. Fluid Statics, Pressure, and Buoyant Forces

Laboratory 11 Fluid Statics, Pressure, and Buoyant Forces I. Introduction In this exercise we will investigate some properties of non-moving fluids and the forces they exert on objects immersed in them.

### Layers of Liquids. OBJECTIVE: Students will observe how some liquids float on top of each other while others sink into one another.

Pre-Visit Activity Layers of Liquids OBJECTIVE: Students will observe how some liquids float on top of each other while others sink into one another. MATERIALS: Honey Corn syrup Dawn dish soap Water Vegetable

### 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

### Described by Isaac Newton

Described by Isaac Newton States observed relationships between motion and forces 3 statements cover aspects of motion for single objects and for objects interacting with another object An object at rest

### PH2213 : Examples from Chapter 4 : Newton s Laws of Motion. Key Concepts

PH2213 : Examples from Chapter 4 : Newton s Laws of Motion Key Concepts Newton s First and Second Laws (basically Σ F = m a ) allow us to relate the forces acting on an object (left-hand side) to the motion

### FOIL BOATS. DESIGN CHALLENGE Design and build a boat from aluminum foil that can hold as many pennies as possible before sinking or capsizing.

Grades 3 5 20 minutes FOIL BOATS DESIGN CHALLENGE Design and build a boat from aluminum foil that can hold as many pennies as possible before sinking or capsizing. MATERIALS Supplies and Equipment: Shallow

### 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

### 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

### Lecture 13 Mass Density (Chapter 12) Pressure Buoyant Force

Lecture 13 Mass Density (Chapter 12) Pressure Buoyant Force (Chap. 13) Density The (mass) density of a material is its mass M per unit volume V: The densities of most liquids and solids vary slightly with

### ANSWER KEY EXPERIMENT 5: ARCHIMEDES PRINCIPLE

ANSWER KEY EXPERIMENT 5: ARCHIMEDES PRINCIPLE OBJECTIVE To determine the buoyant force from Archimedes Principle. INFERENCE Archimedes` Principle states that When an object is immersed in a fluid (liquid

### 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

### MEASUREMENT OF MASS, WEIGHT AND DENSITY

1 MEASUREMENT OF MASS, WEIGHT AND DENSITY I. Tick ( ) the most appropriate answer. 1. The SI unit of weight is (a) kg (b) newton (c) newton-metre (d) km 2. We use a beam balance to measure (a) weight (b)

### 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

### Simulating Microgravity with Buoyancy A Space School Lesson Plan

ASTRONAUT TRAINING...UNDERWATER Simulating Microgravity with Buoyancy A Space School Lesson Plan by Bill Andrake, Swampscott Middle School Swampscott, Massachusetts Science Lesson: Buoyancy - Based on

### Section 2 Buoyancy and Density

Section 2 Buoyancy and Density Key Concept Buoyant force and density affect whether an object will float or sink in a fluid. What You Will Learn All fluids exert an upward buoyant force on objects in the

### Chapter 13: LIQUIDS. Lecture Part 1-2. Armen Kocharian Pearson Education, Inc.

Chapter 13: LIQUIDS Lecture Part 1-2 Armen Kocharian Objectives: Pressure Pressure in a Liquid Buoyancy in a Liquid Archimedes Principle What Makes an Object Sink or Float The force per unit area that

### Matter and the Universe. Ancient Views. Modern Views. Periodic Table of Elements. Ernest Rutherford

Matter and the Universe Ancient Views Early atomists believed that matter had a smallest indivisible bit, an atom. Aristotle, the most famous of the early Greek philosophers, didn't agree with the idea

### General Physics (PHY 2130)

General Physics (PHY 30) Lecture 3 Solids and fluids buoyant force Archimedes principle Fluids in motion http://www.physics.wayne.edu/~apetrov/phy30/ Lightning Review Last lecture:. Solids and fluids different

### PHYS 1405 Conceptual Physics I Laboratory # 8 Density and Buoyancy. Investigation: How can we identify a substance by figuring out its density?

PHYS 1405 Conceptual Physics I Laboratory # 8 Density and Buoyancy Investigation: How can we identify a substance by figuring out its density? What to measure: Volume, mass. Measuring devices: Calipers,

### Chapter 4 Dynamics: Newton s Laws of Motion. Copyright 2009 Pearson Education, Inc.

Chapter 4 Dynamics: Newton s Laws of Motion Force Units of Chapter 4 Newton s First Law of Motion Mass Newton s Second Law of Motion Newton s Third Law of Motion Weight the Force of Gravity; and the Normal

### 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

### Processes of Science: Physics of Matter. Introduction to Buoyancy

Processes of Science: Physics of Matter Introduction to Buoyancy Introduction: You already know that it's easier to lift something heavy when it's underwater. Why is this? Because the water helps support

### Solution: The boat sinks until the weight of the additional water displaced equals the weight of the truck. Thus,

Problem1. A small ferry boat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 4.00 cm into the river. What is the weight of the truck? Solution: The boat

### 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

### 2 Floating and Sinking

Section 2 Floating and Sinking 2 Floating and Sinking Objectives After this lesson, students will be able to M.3.2.1 Describe the effect of the buoyant force. M.3.2.2 Explain how the density of an object

### Name Partner Date Class

Name Partner Date Class FLUIDS Part 1: Archimedes' Principle Equipment: Dial-O-Gram balance, small beaker (150-250ml), metal specimen, string, calipers. Object: To find the density of an object using Archimedes'

### Chapter 9: The Behavior of Fluids

Chapter 9: The Behavior of Fluids 1. Archimedes Principle states that A. the pressure in a fluid is directly related to the depth below the surface of the fluid. B. an object immersed in a fluid is buoyed

### 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

### Schooner Adventure Water and Energy Keeping Things Afloat: Investigating Sinking and Floating

Schooner Adventure Water and Energy Keeping Things A: Investigating Sinking and Floating I. Why Do Things Float? What Sinks, What Floats? Predict and test whether various objects placed in water will or

### 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

### 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

### Activity #: 3. Suggested Discussion Topics Matter

Grade: Fourth Activity #: 3 Activity Title: Mass & Volume & Density, Oh My! Recommended Group Size: Class/Small Groups Special Notes: This is a wet experiment and should ideally be done in the Science

### 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

### 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

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

### Lab 8 Impulse and Momentum

b Lab 8 Impulse and Momentum What You Need To Know: The Physics There are many concepts in physics that are defined purely by an equation and not by a description. In some cases, this is a source of much

### Archimedes Principle

ASU University Physics Labs - Mechanics Lab 8 p. 1 Name: Section #: Date: Part 1: Archimedes Principle Prediction Archimedes Principle In the first experiment to test Archimedes Principle, explain what

### Applied Fluid Mechanics

Applied Fluid Mechanics 1. The Nature of Fluid and the Study of Fluid Mechanics 2. Viscosity of Fluid 3. Pressure Measurement 4. Forces Due to Static Fluid 6. Flow of Fluid and Bernoulli s Equation 7.

### Chapter 13 Fluids. Copyright 2009 Pearson Education, Inc.

Chapter 13 Fluids 13-1 Phases of Matter The three common phases of matter are solid, liquid, and gas. A solid has a definite shape and size. A liquid has a fixed volume but can be any shape. A gas can

### CHM 130LL: Density. Objectives. Introduction

Objectives CHM 130LL: Density In this experiment you will: Measure the dimensions of a cylindrical solid slug of an unknown metal to calculate its density and identify the metal. Measure the mass and volume

### Physics 231 Lecture 24

Physics 31 Lecture 4 Main points of today s lecture: uoyancy y y ernouli s equation 1 P g V W F displaced f displaced 0 0 0 1 gy v P gy v P f f f Viscous flow Poisseuille s law d Av F L P P R t V 8 1 4

### Educational Innovations

Educational Innovations AIR-444/446 Air Swimmers Next Generation Science Standards: 5-PS1-1 Develop a model to describe that matter is made of particles too small to be seen. 5-PS2-1 Support an argument

### Making Things Float & Making a Hydrometer

Making Things Float & Making a Hydrometer Grade 7 Activity Plan 1 Making Things Float Objectives: 1. To demonstrate how density and displacement affect whether things float or sink 2. To illustrate how

### DENSITY. reflect. look out! 6.6B

6.6B reflect Imagine that it is a very hot day. You decide to cool a glass of water by placing several ice cubes in the drink. What happens when you drop the ice into the water? Likely, when you place

### Fluids flow conform to shape of container. Mass: mass density, Forces: Pressure Statics: Human body 50-75% water, live in a fluid (air)

Chapter 11 - Fluids Fluids flow conform to shape of container liquids OR gas Mass: mass density, Forces: Pressure Statics: pressure, buoyant force Dynamics: motion speed, energy friction: viscosity Human

### Teaching Sciences by Ocean Inquiry SMS 491/ EDW 472 Spring 2008

Teaching Sciences by Ocean Inquiry SMS 491/ EDW 472 Spring 2008 * In this class with assume that students are already familiar with the concepts of mass, volume and their measurements. For inquiry-based

### 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

### Measurement. Chapter 1

Chapter 1 Measurement Figure 1.1 What s the difference between mass and weight? Figure 1.2 How did early clocks measure time? Figure 1.3 Why does a block of iron sink but an iron ship floats? Physics is

### Stations Lab: Scientific Measurement

Stations Lab: Scientific Measurement Introduction Every measurement has an uncertainty, or built-in error. This error is due to limitations in the measurement scale, the manufacturing process, and the

### 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

### Pre-Lab 1: Measurement and Density

Pre-Lab 1: Measurement and Density Name: Section: Answer the following questions after reading the background information on the next page. Be sure to use the correct number of significant figures in each

### MEASUREMENT OF MASS, WEIGHT AND DENSITY

MEASUREMENT OF MASS, WEIGHT AND DENSITY I. Tick (t') the most appropriate answer. 1. The SI unit of weight is (a) kg (b) newton (c) newton-metre (d) km 2. We use a beam balance to measure (a) weight (b)

### Scientific Measurements

Scientific Measurements Making measurements is common in general, such as taking our temperature, checking the tire pressure on a car, or measuring the ingredients when cooking. Taking measurements is

### LESSON 15: Floating Paper Clips ESTIMATED TIME Setup: 5 minutes Procedure: 5 10 minutes

LESSON 15: Floating Paper Clips ESTIMATED TIME Setup: 5 minutes Procedure: 5 10 minutes DESCRIPTION Utilize a careful technique to make a paper clip float on top of water. OBJECTIVE This lesson demonstrates

### Section 1 What Is Matter?

Section 1 What Is Matter? Key Concept Matter is anything that has mass and takes up space. Matter can be described in terms of its volume, mass, and weight. What You Will Learn All matter has volume and

### Fluids Quiz Science 8

Fluids Quiz Science 8 Introduction to Fluids 1. What are fluids essential for? Industrial Processes 2. What devices use knowledge of fluids? Hydraulic and pneumatic devices and machines A Close-Up Look

### Pascal s Principle. Any change in the pressure of a fluid is transmitted uniformly in all directions throughout the fluid.

Pascal s Principle What happens inside a fluid when pressure is exerted on it? Does pressure have a direction? Does it transmit a force to the walls or bottom of a container? Any change in the pressure

### 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 OF LIQUIDS & SOLIDS Experiment 2

Physical Science 14 DENSITY OF LIQUIDS & SOLIDS Experiment 2 INTRODUCTION: Density is a measure of the quantity of mass of a substance that occupies one unit of volume. In other words, the density of a

### Swapping Units 1) X = = 2) X = = 3) X = = 4) X = = Name: Period: MULTIPLYING BY ONE

Name: Period: Swapping Units Swap Meet is a game about trading one thing for another. In the game, we are not trying to end up with stuff that is worth MORE than what we started with. Instead, we simply

### IMSS After School Science Lesson Plan Penny Boat Challenge

IMSS After School Science Lesson Plan Penny Boat Challenge Authors: Lawrence Chu, Marilyn Stewart, Patrick Hilton Lesson Grade Level: 6th Suggested Time: 1 1.5 Hours Crosscutting Concepts: Desired Results

### 1. Newton s Laws of Motion and their Applications Tutorial 1

1. Newton s Laws of Motion and their Applications Tutorial 1 1.1 On a planet far, far away, an astronaut picks up a rock. The rock has a mass of 5.00 kg, and on this particular planet its weight is 40.0

### Activity P13: Buoyant Force (Force Sensor)

Name Class Date Activity P13: Buoyant Force (Force Sensor) Concept DataStudio ScienceWorkshop (Mac) ScienceWorkshop (Win) Archimedes Principle P13 Buoyant Force.DS P18 Buoyant Force P18_BUOY.SWS Equipment