Forces and Sounds

Scott Foresman Science 1.9
Genre Comprehension Skill Text Feature Science Content
Nonfi ction Cause and Effect • Glossary Forces and Sound
ISBN 0-328-13758-8
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13758_01-04_CVR_FSD.indd Cover113758_01-04_CVR_FSD.indd Cover1 5/9/05 7:03:33 PM5/9/05 7:03:33 PM
Scott Foresman Science 1.9
Genre Comprehension Skill Text Feature Science Content
Nonfi ction Cause and Effect • Glossary Forces and Sound
ISBN 0-328-13758-8
ì<(sk$m)=bdhfij< +^-Ä-U-Ä-U
13758_01-04_CVR_FSD.indd Cover113758_01-04_CVR_FSD.indd Cover1 5/9/05 7:03:33 PM5/9/05 7:03:33 PM
1. What force makes a ball fall
toward the ground?
2. How can force change the speed
of something?
3.

Magnets can
repel and attract. Write to explain
how magnets can do both. Use
words from the book as you write.
4.

Cause and Effect What
would happen if you pressed
a piano key very hard? What
would happen if you pressed
a piano key softly?
What did you learn?
Vocabulary

attract
force
gravity
magnet
pole
repel
speed
vibrate
Picture Credits
Every effort has been made to secure permission and provide appropriate credit for photographic material.
The publisher deeply regrets any omission and pledges to correct errors called to its attention in subsequent editions.
Photo locators denoted as follows: Top (T), Center (C), Bottom (B), Left (L), Right (R), Background (Bkgd).
3 (CR) Getty Images.
Unless otherwise acknowledged, all photographs are the copyright © of Dorling Kindersley, a division of Pearson.
ISBN: 0-328-13758-8
Copyright © Pearson Education, Inc. All Rights Reserved. Printed in the United States of America.
This publication is protected by Copyright, and permission should be obtained from the publisher prior to any
prohibited reproduction, storage in a retrieval system, or transmission in any form by any means, electronic,
mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to
Permissions Department, Scott Foresman, 1900 East Lake Avenue, Glenview, Illinois 60025.
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by Carol Levine
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2
Moving
Look at this ball. A boy
throws it in the air. Does it
go in the hoop?
Force is a push or a pull

that can make something
move. Force happens when
the boy throws the ball.
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3
What happens when the ball drops? It falls.
Gravity is a force that pulls things down toward
the ground. Gravity pulls the ball down.
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Using Force
Throw the ball hard. How far will it go?
Throw the ball gently. Now how far will it go?
A hard push has more force. A gentle push
has less force. Force can change the way
things move.
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Speed
Speed is how fast or slowly something
moves. Use more force. Things move faster.
Use less force. Things move more slowly.
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Ways to Move
Look at a skater move.
She goes this way and
that way on the ice.
She can jump up. She
can bend down. She can

go left. She can go right.
She can go in a straight
line.
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She can move in a curve.
She can even zigzag. She might fall.
Gravity pulls her to the ground.
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Look at these blocks. Can you tell where
each block is?
The yellow block is above the red one. The
blue block is below the green one. The yellow
block is between the blue one and the red one.
Different Places
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The yellow block is next to the red one.
The yellow block is on the fl oor. What will
change if the blocks fall out of the bucket?
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Magnets
Look at the magnets staying up. A magnet
attracts some kinds of metal. Attract means
pull toward.
Magnets do not always attract. They can
repel. Repel means to push away. Magnets
may have two ends, or poles. Opposite poles

attract. The same poles repel.
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A magnet makes this game work.
The magnet pulls pieces of metal.
Magnets pull with more force when
they are close to metal. Magnets pull with
less force when they are far from metal.
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Making Sounds
Look at these instruments. How do they
make sounds?
When a sound is made something vibrates.
Vibrate means to move back and forth
very fast. Force changes sound. A strong tap
makes a different sound than a light tap.
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13
Finding Sounds
Sounds are all around.
Suppose you are in a toy store. You might
hear a toy bell ringing. You might hear a
toy drum playing. You might hear a toy car
beeping. You might hear a grown-up saying
it is time to go.
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Sounds are in nature. Suppose you are on
this beach. You might hear birds chirping.

You might hear the waves crashing. You might
hear the wind blowing.
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Things move. Sometimes this movement
makes sound. Sometimes this movement puts
things in different places. Movement and
sound are all around!
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attract to pull toward
force a push or a pull that makes
something move
gravity a force that pulls things down
toward the ground
magnet an object that can attract things
made of some kinds of metal
poles ends of some magnets
repel to push away
speed how fast or slowly something moves
vibrate to move back and forth very fast
Glossary
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1. What force makes a ball fall
toward the ground?
2. How can force change the speed
of something?
3.

Magnets can

repel and attract. Write to explain
how magnets can do both. Use
words from the book as you write.
4.

Cause and Effect What
would happen if you pressed
a piano key very hard? What
would happen if you pressed
a piano key softly?
What did you learn?
Vocabulary
attract
force
gravity
magnet
pole
repel
speed
vibrate
Picture Credits
Every effort has been made to secure permission and provide appropriate credit for photographic material.
The publisher deeply regrets any omission and pledges to correct errors called to its attention in subsequent editions.
Photo locators denoted as follows: Top (T), Center (C), Bottom (B), Left (L), Right (R), Background (Bkgd).
3 (CR) Getty Images.
Unless otherwise acknowledged, all photographs are the copyright © of Dorling Kindersley, a division of Pearson.
ISBN: 0-328-13758-8
Copyright © Pearson Education, Inc. All Rights Reserved. Printed in the United States of America.
This publication is protected by Copyright, and permission should be obtained from the publisher prior to any
prohibited reproduction, storage in a retrieval system, or transmission in any form by any means, electronic,

mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to
Permissions Department, Scott Foresman, 1900 East Lake Avenue, Glenview, Illinois 60025.
3 4 5 6 7 8 9 10 V010 13 12 11 10 09 08 07 06 05
13758_01-04_CVR_FSD.indd Cover213758_01-04_CVR_FSD.indd Cover2 5/9/05 7:03:41 PM5/9/05 7:03:41 PM