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

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 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 the weight of the object. Clearly, when you swim on the surface of the water, the water is supporting 100% of your weight. Scuba divers wear weights on a belt to help them sink under the surface of the water. Why does a fluid (it doesn't have to be water) provide buoyancy? Buoyance is a fluid's capacity to support some or all of the weight of an object submerged in it. How does buoyancy work? You already know that an object that is submerged in a liquid displaces some of that liquid. The level of the liquid rises. It turns out that a submerged object displaces its total volume of the liquid. If an object is only partially submerged, it will displace liquid equal to the submerged volume. In this series of pictures, notice how the level of the water rises as the object sinks. As more of the object goes beneath the surface, more water is displaced.

2 This displaced liquid has mass. The mass depends only on the volume and the density of the liquid. Let's do a couple of short calculations: Let's say that the yellow mass in the pictures above is made of lead. Lead's specific gravity is How much liquid is displaced when the lead object is submerged in alcohol (sg = 0.78), fresh water (sg = 1.00) and glycerin (sg = 1.73)? First of all, we know that the object will sink to the bottom of the container because its specific gravity is greater than the specific gravities of all three of the liquids. So, let's see what happens. Lead object in alcohol: The volume of the object is 7.0 cm 3. You know this because of the rise of the level of alcohol in the picture on the previous page. This means that the displaced alcohol also has a volume of 7.0 cm 3. How do we know this? Again, the level of the alcohol rose 7.0 ml, which is equal to 7.0 cm 3. How much mass does this displaced alcohol have? You know that density includes mass and volume. This makes density a good tool for finding the mass of the alcohol. ρ alcohol = m / V m = ρ alcohol V Do we know the density of alcohol? Not exactly. But we do know the SG alcohol = (ρ alcohol ) / (ρ water ) ρ alcohol = (SG alcohol )( ρ water ) m = ρ alcohol V = (SG alcohol )( ρ water )(V) m = (0.78) (1.00 g/cm 3 ) (7.0 cm 3 ) m = 5.46 g

3 So, 5.46 g of alcohol were displaced. Lead object in fresh water: The volume of the object is 7.0 cm 3. You know this because of the rise of the level of water in the picture on the previous page. This means that the displaced water also has a volume of 7.0 cm 3. How do we know this? Again, the level of the water rose 7.0 ml, which is equal to 7.0 cm 3. How much mass does this displaced water have? You know that density includes mass and volume. This makes density a good tool for finding the mass of the water. ρ water = m / V m = ρ water V Do we know the density of water? Not exactly. But we do know the SG water = (ρ water ) / (ρ water ) ρ water = (SG water )(ρ water ) m =ρ water V = (SG water )(ρ water )(V) m = (1.00) (1.00 g/cm 3 ) (7.0 cm 3 ) m = 7.0 g So, 7.0 g of water were displaced. Lead object in glycerine: The volume of the object is 7.0 cm 3. You know this because of the rise of the level of glycerin in the picture on the previous page. This means that the displaced glycerin also has a volume of 7.0 cm 3. How do we know this? Again, the level of the glycerin rose 7.0 ml, which is equal to 7.0 cm 3.

4 How much mass does this displaced glycerin have? You know that density includes mass and volume. This makes density a good tool for finding the mass of the glycerin. ρ glycerin = m / V m = ρ glycerin V Do we know the density of glycerin? Not exactly. But we do know the SG glycerin = (ρ glycerin ) / (ρ water ) ρ glycerin = (SG glycerin )(ρ water ) m = ρ glycerin V = (SG glycerin )( ρ water )(V) m = (1.73) (1.00 g/cm 3 ) (7.0 cm 3 ) m = g So, g of glycerin were displaced. Let's take a look at a summary of these results. Specific Gravity Volume of Displaced Alcohol cm g Water cm g Glycerin cm g Mass of Displaced The object displaced the same volume in all three liquids, but it displaced a different mass of liquid in each case. Partial Submersion What happens when an object goes partly below the surface, and then floats there? Let's suppose that we have the same size object that we had before, with a volume of 7.0 cm 3. But now, let's reduce the mass a lot. Let's reduce the mass so much that the specific gravity of the object is now This is much less than the very large specific gravity for lead. What happens when we drop this new object (which is

5 now red!) into the same three liquids? Clearly, each of the liquids has a specific gravity that is larger than 0.55, so the object will float in each one. What will it look like? What about the displaced liquids in these cases? Before, with the yellow object, the volume of displaced liquid was the same for all three cases. This is no longer true. However, the buoyant force on the object (the arrow in the pictures) is always equal to the mass of the object. How do we know that? Because the object is floating. The liquid must be supporting the entire weight of the object if it is floating. It would sink otherwise. What is the mass of the object? Again, we will use density and volume to calculate it. ρ object = m / V m =ρ object V m = ρ object V = (SG object )( ρ water )(V) m = (0.55) (1.00 g/cm 3 ) (7.0 cm 3 ) m = 3.85 g So, the mass of displaced liquid is 3.85 g for all three cases. How much liquid is displaced for each case? Light object in alcohol:

6 The volume of the object is 7.0 cm 3. The displaced alcohol has a volume of less than 7.0 cm 3. How much mass does this displaced alcohol have? The mass must be equal to the mass of the object, 3.85 g. What is the volume of this amount of alcohol? ρ alcohol = m / V V = m / ρ alcohol Do we know the density of alcohol? Not exactly. But we do know the SG alcohol = (ρ alcohol ) / (ρ water ) ρ alcohol = (SG alcohol )(ρ water ) V = m /r alcohol = m / [(SG alcohol )( r water )] V = (3.85 g) / [(0.78 ) (1.0 g/cm 3 )] V = 4.94 cm 3 So, 4.94 cm 3 of alcohol were displaced. Light object in water: The volume of the object is 7.0 cm 3. The displaced water has a volume of less than 7.0 cm 3. How much mass does this displaced water have? The mass must be equal to the mass of the object, 3.85 g. What is the volume of this amount of water? ρ water = m / V V = m / ρ water Do we know the density of water? Not exactly. But we do know the SG water = (ρ water ) / (ρ water ) ρ water = (SG water )( ρ water )

7 V = m / ρ water = m / [(SG water )( ρ water )] V = (3.85 g) / [(1.00 ) (1.0 g/cm 3 )] V = 3.85 cm 3 So, 3.85 cm 3 of water were displaced. Light object in glycerin : The volume of the object is 7.0 cm 3. The displaced glycerin also has a volume of less than 7.0 cm 3. How much mass does this displaced glycerin have? The mass must be equal to the mass of the object, 3.85 g. What is the volume of this amount of glycerin? ρ glycerin = m / V V = m / ρ glycerin Do we know the density of glycerin? Not exactly. But we do know the SG glycerin = (ρ glycerin ) / (ρ water ) ρ glycerin = (SG glycerin )(ρ water ) V = m / ρ glycerin = m / [(SG glycerin )(ρ water )] V = (3.85 g) / [(1.73 ) (1.0 g/cm 3 )] V = 2.23 cm 3 So, 2.23 cm 3 of glycerin were displaced.

8 Specific Gravity Volume of Displaced Alcohol cm g Water cm g Glycerin cm g Mass of Displaced Before, when the object sank to the bottom, the same volume but different masses of liquid were displaced. Now, we see that when an object floats, the same mass of liquid is displaced, but different volumes. Principle Concepts: A sunken object displaces its own volume of liquid. A floating object displaces its own mass of liquid. Buoyant force is equal to the weight of the displaced liquid, whether the object is submerged or floating. You should make a special effort to memorize these concepts, and use them.

### 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

### 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.)

### 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

### 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 and Density: Middle School Unit Plan

Buoyancy and Density: Middle School Unit Plan Questioning Strategies to Promote Critical Thinking Using a Conceptual Change Model (Integration of mathematics & physical science) Delena Norris-Tull and

### 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

### 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

### 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

### 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

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

### 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,

### 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

### 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

### Lab 11 Density and Buoyancy

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

### 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

### 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

### 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

### 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:

### Fluid Mechanics. Fluid forces

Fluid Mechanics Fluid Mechanics: the study of forces that develop when an object moves through a fluid medium. Two fluids of interest Water Air In some cases, fluid forces have little effect on an object

### 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.

### 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

### 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

### 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,

### PHY 171. Homework 9 solutions. (Due by beginning of class on Thursday, March 8, 2012)

PHY 171 Due by beginning of class on Thursday, March 8, 2012 Submit neat work, with answers or solutions clearly marked by the question number. Unstapled, untidy work will be charged a handling fee of

### Physics 113 Exam #4 Angular momentum, static equilibrium, universal gravitation, fluid mechanics, oscillatory motion (first part)

Physics 113 Exam #4 Angular momentum, static equilibrium, universal gravitation, fluid mechanics, oscillatory motion (first part) Answer all questions on this examination. You must show all equations,

### 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,

### 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

### 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

### 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,

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

### Density and Archimedes Principle

Drexel-SDP GK-12 ACTIVITY Activity: Density and Archimedes Principle Subject Area(s) Measurement, Physical Science Associated Unit Measurement, module 2 Associated Lesson Activity Title Grade Level 6 (3-8)

### 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

### 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

### 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

### Chapter 4: Buoyancy & Stability

Chapter 4: Buoyancy & Stability Learning outcomes By the end of this lesson students should be able to: Understand the concept of buoyancy hence determine the buoyant force exerted by a fluid to a body

BUOYANCY! 2008, Peter Angstadt What is buoyancy and why do I want it? Buoyancy is the principle that explains why objects float and rise to the surface of water. If your game has any liquid surfaces (like

### 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

### 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

### Chapter 3. Table of Contents. Chapter 3. Objectives. Chapter 3. Kinetic Theory. Section 1 Matter and Energy. Section 2 Fluids

States of Matter Table of Contents Objectives Summarize the main points of the kinetic theory of matter. Describe how temperature relates to kinetic energy. Describe four common states of matter. List

### 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

### 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

### Experiment 3 Introduction to Density INTRODUCTION

Experiment 3 Introduction to Density INTRODUCTION The purpose of this experiment is to understand the meaning and significance of the density of a substance. Density is a basic physical property of a homogeneous

### 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

### 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

### Figure 1- Different parts of experimental apparatus.

Objectives Determination of center of buoyancy Determination of metacentric height Investigation of stability of floating objects Apparatus The unit shown in Fig. 1 consists of a pontoon (1) and a water

### 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

### Structure of the Earth/Density Test

Name Score /69 Structure of the Earth/Density Test Using the formula for density: to solve each problem, SHOWING ALL YOUR WORK, including UNITS. Refer to this chart to answer questions #1 & #2 Layer Approximate

### 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

Buoyancy and Air Bladders: Passing gas Follow up in Textbook: pp. 421-423 A. Objective: Explain how fish swim bladders produce neutral buoyancy. Explain how changes in atmospheric pressure influence buoyancy.

### Exploring Buoyancy and Density With an Online Simulation

Curry School of Education, University of Virginia www.teacherlink.org/content/science/ Exploring Buoyancy and Density With an Online Simulation With the Density Lab simulation at www.explorelearning.com,

### 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

### Timing This activity takes minutes to complete.

Module Overview This module is about density. Through several experiments, students will learn how to calculate the density of regular and irregular objects and liquids. They will also create a layered

### The Mystery of the Pirate s Booty- Salinity and Buoyancy

The Mystery of the Pirate s Booty- Salinity and Buoyancy Buoyancy If you ve ever lain on your back in a swimming pool you have demonstrated the ability of an object to float in water. You float because

### 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.

### Exploring Buoyancy. Design Challenge Learning. https://www.thetech.org/educators/design- challenge- learning

How low can you go? Students are challenged to use their understanding of buoyancy, density, and pressure to design and build ocean exploring devices. As students iterate through this design challenge,

### 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

### A Voyage into Science Discovery. with James Cameron and Kevin Hardy

submarine A Voyage into Science Discovery with James Cameron and Kevin Hardy 2 soda cup lander assembly and operation THIS IS HOW TO MAKE IT: Collect everything you need from the drawing on page 2. You

### 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

### 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

### Fascinating Education Script Fascinating Physics Lessons

Fascinating Education Script Fascinating Physics Lessons Why Things Float Slide 1: The blue column of water Here is a lake. I want you to imagine a blue column of water extending from the bottom of the

### 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

### 3.4 Multiplying Polynomials

3.4 Multiplying Polynomials Let s turn our attention to the next basic operation on polynomials, multiplication. There are a number of ways to learn how to multiply polynomials, however, they all boil

### Section 3 Newton s Laws of Motion

Section 3 Newton s Laws of Motion Key Concept Newton s laws of motion describe the relationship between forces and the motion of an object. What You Will Learn Newton s first law of motion states that

### 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

### 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

### 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

### 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

### [8] SA1.2 The student demonstrates an understanding of the processes of science by collaborating

Convection and Wind Levels Overview: During this project, students observe convection current by performing a lab experiment. As a result of this activity, students develop an understanding of the process

### S3 Physics Elective Density and Kinetic Theory

Name: Class: Duncanrig Secondary School East Kilbride S3 Physics Elective Density and Kinetic Theory Pupil Booklet Learning Outcomes Homework Summary SCN 4-08b Through experimentation, I can explain floating

### These slides contain some notes, thoughts about what to study, and some practice problems. The answers to the problems are given in the last slide.

Fluid Mechanics FE Review Carrie (CJ) McClelland, P.E. cmcclell@mines.edu Fluid Mechanics FE Review These slides contain some notes, thoughts about what to study, and some practice problems. The answers

### 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

### 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

### Chapter 8 Fluid Flow

Chapter 8 Fluid Flow GOALS When you have mastered the contents of this chapter, you will be able to achieve the following goals: Definitions Define each of the following terms, and use it in an operational

### 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.

### Mass and Volume Relationships

Mass and Volume Relationships Objective: The purpose of this laboratory exercise is to become familiar with some of the basic relationships and units used by scientists. In this experiment you will perform

### 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

### 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

### Intended Audience Grade three through eight

Developed by 2015 Submarine Force Library and Museum STEM H Teacher Fellow Ted Allen, Science Teacher, Ledyard Middle School, Ledyard, CT Lesson Name Pressure & Buoyancy Number of minutes in the Lesson

### How to use direct (or just-in-time ) instruction in your science classroom

1 How to use direct (or just-in-time ) instruction in your science classroom S ome teachers believe that lecturing is to be avoided in the classroom. Other teachers depend too much on the stand-and-deliver

### What Makes GloFish Swim?

Name Period Date What Makes GloFish Swim? Objective The student will learn how buoyancy affects GloFish fluorescent fish. Introduction Buoyancy is the upward push of water on an object that causes something

### 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

### 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

### 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

### Fluid Dynamics Basics

Fluid Dynamics Basics Bernoulli s Equation A very important equation in fluid dynamics is the Bernoulli equation. This equation has four variables: velocity ( ), elevation ( ), pressure ( ), and density

### 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

### Liquid level measurement using hydrostatic pressure and buoyancy

iquid level measurement using hydrostatic pressure and buoyancy This worksheet and all related files are licensed under the Creative Commons Attribution icense, version 1.0. To view a copy of this license,

### 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

### 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

### CH-205: Fluid Dynamics

CH-05: Fluid Dynamics nd Year, B.Tech. & Integrated Dual Degree (Chemical Engineering) Solutions of Mid Semester Examination Data Given: Density of water, ρ = 1000 kg/m 3, gravitational acceleration, g

### 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

### 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

T ABLE OF CONTENTS ABOUT DELTA SCIENCE MODULES Program Introduction................... iii Teacher s Guide..................... iv Delta Science Readers............... vi Equipment and Materials Kit.........

### 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

### Mercury is poured into a U-tube as in Figure (14.18a). The left arm of the tube has crosssectional

Chapter 14 Fluid Mechanics. Solutions of Selected Problems 14.1 Problem 14.18 (In the text book) Mercury is poured into a U-tube as in Figure (14.18a). The left arm of the tube has crosssectional area

### 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)