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Chapter Resources. Click on one of the following icons to go to that resource. glencoe.com. Image Bank. Foldables. Chapter Summary. Chapter Review Questions. Standardized Test Practice. glencoe.com. Image Bank. Click on individual thumbnail images to view larger versions. Image Bank.

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Presentation Transcript
slide1

Chapter Resources

Click on one of the following icons to go to that resource.

glencoe.com

Image Bank

Foldables

Chapter Summary

Chapter Review Questions

Standardized Test Practice

slide3

Image Bank

Click on individual thumbnail images to view larger versions.

slide4

Image Bank

Transfer Images

  • To transfer images to your own power point follow the following steps:
  • Open the “Resource” file from the CD-ROM disc – view the file in the “normal view” or “slide sorter view” mode - go to slide #2 – from there you can click through the images and follow these instructions. Click once on the image.
  • Copy the image
  • Go to your own power point document
  • Paste the image.
slide6

Image Bank

Oxygen Tanks

slide7

Image Bank

Glass of Water

slide8

Image Bank

Scuba Diver

slide9

Image Bank

Pressure in all Directions

slide10

Image Bank

Atmospheric Pressure

slide11

Image Bank

Barometer

slide12

Image Bank

Buoyant Force

slide13

Image Bank

Buoyant Force and Shape

slide15

Image Bank

Floating and Density

slide16

Image Bank

Boat and Cube

slide17

Image Bank

Airplane Taking Off

slide18

Image Bank

Pushing on a Fluid

slide19

Image Bank

Hydraulic Systems

slide20

Image Bank

Pressure in a Moving Fluid

slide21

Image Bank

Chimneys and Bernoulli’s Principal

slide22

Image Bank

Hurricane Damage

slide23

Image Bank

Airplane Wing

slide24

Image Bank

Airplane

slide25

Foldables

Scientific Processes

Make the following Foldable to help identify what you already know, what you want to know, and what you learned about science.

slide26

Foldables

Fold one sheet of paper lengthwise.

slide27

Foldables

Fold into thirds.

slide28

Foldables

Unfold and draw overlapping ovals. Cut the top sheetalong the folds.

slide29

Foldables

Label the ovals as shown.

slide30

Foldables

Construct a Venn Diagram

As you read the chapter, list the characteristics of liquids under the left tab, those characteristics of gases under the right tab, and those characteristics common to both under the middle tab.

slide31

Reviewing Main Ideas

1

Pressure

  • Pressure equals force divided by area.
  • Liquids and gases are fluids that flow.
  • Pressure increases with depth and decreases with elevation in a fluid.
  • The pressure exerted by a fluid on a surface is always perpendicular to the surface.
slide32

Reviewing Main Ideas

2

Why do objects float?

  • A buoyant force is an upward force exerted on all objects placed in a fluid.
  • The buoyant force depends on the shape of the object.
  • According to Archimedes’ principle, the buoyant force on the object is equal to the weight of the fluid displaced by the object.
slide33

Reviewing Main Ideas

2

Why do objects float?

  • An object floats when the buoyant force exerted by the fluid is equal to the object’s weight.
  • An object will float if it is less dense than the fluid it is placed in.
slide34

Reviewing Main Ideas

3

Doing Work with Fluids

  • Pascal’s principle stated that the pressure applied at any point to a confined fluid is transmitted unchanged throughout the fluid.
  • Bernoulli’s principle states that when the velocity of a fluid increases, the pressure exerted by the fluid decreases.
  • A wing provides lift by forcing air downward.
slide35

Chapter Review

Question 1

Explain why a fire in your fireplace will smoke more strongly on a windy day.

slide36

Chapter Review

Answer

The wind causes the pressure outside the chimney to be less than the pressure inside the house, thus drawing the smoke up and out faster.

slide37

Chapter Review

Question 2

Why does the cube in this illustration sink while the boat, which is larger, floats?

slide38

Chapter Review

Answer

The boat displaces more water because of its shape. Therefore the boat floats, but the cube sinks.

slide39

Chapter Review

Question 3

Any object with a density greater than the fluid it’s placed in will _______.

Answer

The answer is sink. Conversely, any object with a density less than the fluid it’s placed in will float.

slide40

Chapter Review

Question 4

A ship will float when its _______ is great enough to make its density less than the water’s.

A. buoyant force

B. mass

C. pressure

D. volume

slide41

Chapter Review

Answer

The answer is D. Anything less dense than water will float, no matter how massive it is.

slide42

Chapter Review

Question 5

Suppose you put a toy boat in a bathtub and find that it floats. Next you put in a lead block that is the exact same size and shape as the toy boat, but solid throughout. Why won’t it float?

slide43

Chapter Review

Answer

The shape is only part of the reason. The lead block will sink because, though its volume would be the same as a floating boat’s, its density will be greater, and far greater than water’s density.

slide44

Standardized Test Practice

Question 1

When you increase the surface area in contact with a fluid, you _______ the buoyant force on the object.

A. decrease

B. increase

C. maintain

D. negate

slide45

Standardized Test Practice

Answer

The answer is B. This is why a thin sheet of aluminum foil will float, but the same sheet balled up will sink.

slide46

Standardized Test Practice

Question 2

During hurricanes or other high-wind events, windows in houses sometimes shatter _______.

A. downward

B. inward

C. outward

D. upward

slide47

Standardized Test Practice

Answer

The answer is C. Bernoulli’s principle states that pressure decreases with motion in a fluid. When the pressure inside the house is greater than the pressure outside, the windows may burst outward.

slide48

Standardized Test Practice

Question 3

The first method for determining the buoyant force was discovered well over 2,000 years ago by a Greek man named ______.

A. Archimedes

B. Aristotle

C. Aristophanes

D. Arioso

slide49

Standardized Test Practice

Answer

The correct answer is A. This is why the principle is referred to as Archimedes principle.

slide50

Standardized Test Practice

Question 4

Imagine you have a rock that weighs 1000 N with a volume of 10,000 cm3. You drop it into a tank and it sinks to the bottom. What is the exact volume of the water it displaces?

A. 1,000 cm3

B. 10,000 cm3

C. 100,000 cm3

D. 1,000,000 cm3

slide51

Standardized Test Practice

Answer

The answer is B. The volume of water displaced will be exactly equal to the volume of the rock.

slide52

Standardized Test Practice

Question 5

Whose principle explains what is happening in this image?

A. Archimedes

B. Bernoulli

C. Newton

D. Pascal

slide53

Standardized Test Practice

Answer

The answer is D. A hydraulic system uses Pascal’s principle to make the output force applied on the large piston greater than the input force applied on the small piston.

slide54

Help

To advance to the next item or next page click on any of the following keys: mouse, space bar, enter, down or forward arrow.

Click on this icon to return to the table of contents

Click on this icon to return to the previous slide

Click on this icon to move to the next slide

Click on this icon to open the resources file.

Click on this icon to go to the end of the presentation.