www.rourkeclassroom.com

Magnet P

ower

Silverm

an

Rourke C

lassroom

Have you ever wondered about the science all around us? Plants grow and change, the Sun rises to warm the Earth, and matter changes from one form to another. Investigate Life, Physical, Earth, and Technology science topics with Rourke’s My Science Library. This library explores NSTA science standards with engaging text and colorful images to support readers from kindergarten to third grade. Are you ready to investigate?

Books in My Science Library:Animal AdaptationsAnimal HabitatsEarth’s Changing SurfaceFloating and SinkingI Use a MouseLiving or Nonliving?

Magnet PowerMatter Comes in All ShapesMe and My Shadow: A Book about LightPlant AdaptationsPlant Life CyclesWhat’s the Weather Like Today?

Printed in China

Comprehension & Extension:

• Summarize:

How does a magnet work? What is the difference between repel and attract?

• TexttoSelfConnection:

Have you ever used a magnet? What can you do with a magnet?

• Extension:Five Facts!

Write five facts about magnets that you learned from the book.

Teaching Focus:

Vocabulary: Opposites

Look in the book. Find

the opposite ofnorth,

attract,and pull.

Level:JWordCount:220100thWord:two (page 12)

Sight Words I Used:doeshasotherthatwhat

Vocabulary Check:

Use glossary words in a sentence.

Levels 1

-2

Levels 1

-2

Tips on Reading this Book with Children:

1. Readthetitle.

Predictions – after reading the title have children make predictions about the book.

2. Takeabookwalk.

Talk about the pictures in the book. Use content words from the book as you take the picture walk.

Have children find one or two words they know as they do a picture walk.

3. Havechildrenfindwordstheyrecognizeinthetext.

4. Havechildrenreadtheremainingtextaloud.

5. StrategyTalk–usetoassistchildrenwhilereading. • Getyourmouthready • Lookatthepicture • Think…doesitmakesense • Think…doesitlookright • Think…doesitsoundright • Chunkit–bylookingforapartyouknow

6. Readitagain.

7. Completetheactivitiesattheendofthebook.My

ScienceLibrary

MyScienceLibrary

Magnet Power

www.rourkeclassroom.com

by Buffy Silverman

Science Content Editor: Kristi Lew

www.rourkeclassroom.com - rourke@rourkepublishing.comPost Office Box 643328 Vero Beach, Florida 32964

Science content editor: Kristi LewA former high school teacher with a background in biochemistry and more than 10 years of experience in cytogenetic laboratories, Kristi Lew specializes in taking complex scientific information and making it fun and interesting for scientists and non-scientists alike. She is the author of more than 20 science books for children and teachers.

© 2012 Rourke Publishing LLC

All rights reserved. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical including photocopying, recording, or by any information storage and retrieval system without permission in writing from the publisher.

www.rourkeclassroom.com

Photo credits: Cover © Sideways Design, iadams, Matthew Cole, Cover logo frog © Eric Pohl, test tube © Sergey Lazarev; Page 5 © Matthew Cole; Page 7 © MilanB; Page 9 © Morgan Lane Photography, Kristina Postnikova, Olaru Radian-Alexandru, vision77; Page 11 © Marcel Mooij; Page 12 © April Cat; Page 13 © Blue Door Publishing; Page 15 © Blue Door Publishing; Page 17 © Andrea Danti; Page 19 © Blue Door Publishing, stocknshares; Page 21 © Ilya Andriyanov

Editor: Kelli Hicks

Cover and page design by Nicola Stratford, bdpublishing.com Library of Congress Cataloging-in-Publication Data

Silverman, Buffy. Magnet power / Buffy Silverman. p. cm. -- (My science library) Includes bibliographical references and index. ISBN 978-1-61741-740-5 (Hard cover) (alk. paper) ISBN 978-1-61741-942-3 (Soft cover) 1. Magnets--Juvenile literature. 2. Magnetic pole--Juvenile literature. 3. Magnetism--Juvenile literature. I. Title. QC757.5.S55 2012 538’.4--dc22 2011003873

Rourke Publishing Printed in China, Power Printing Company Ltd Guangdong Province042011042011LP

What Is a Magnet? ............4Magnets Have Poles ........10The Earth Is a Magnet .....16Show What You Know .... 22Glossary .............................. 23Index .................................... 24

Table of Contents

4

Nails dangle from a magnet. What holds the nails on the magnet? A magnetic field pulls the nails to the magnet.

What Is a Magnet?

5

A magnet has a force around it. You cannot see the force. The force is called a magnetic field.

6

7

The black dust on this paper

is tiny pieces of iron. The

magnetic force pulls the

iron pieces to the magnet.

8

All magnets have a magnetic field. The field attracts iron, nickel, and certain other metals.

9

Look at the objects below.

Why aren’t the block,

marbles, and dice stuck

to the magnet?

10

What happens if two magnets are held together? Sometimes they pull together. Sometimes they push apart.

Magnets Have Poles

11

This pyramid was made

with yellow magnets and

steel balls. The ends of

the magnets pull together.

12

A magnet has two ends, called poles. One end is called the north pole (N). The other end is called the south pole (S).

north pole (N) south

pole (S)

13

The north pole of one magnet attracts the south pole of another magnet.

The north pole of one magnet and the south

pole of another magnet

will pull together.

14

Poles that are different pull together. Poles that are the same push apart. They repel each other.

15

Can you bring the north

ends of two magnets together? No! The

magnets push apart.

16

The Earth acts like a giant magnet. The Earth has two magnetic poles. Its magnetic field stretches out into space.

The Earth Is a Magnet

17

magnetic north pole

magneticsouth pole

magnetic field

magnetic field

18

Let a magnet swing on a string. The north pole of the magnet moves. It is pulled toward the Earth’s North Pole.

N S

19

20

A compass uses the Earth’s magnetic field to tell directions. The needle inside is a magnet. If you hold the compass still, the needle will point north.

21

For hundreds of years

people have used

compasses to find

their way.

1. Can you name two objects that a magnet picks up?

2. What happens when the south pole of one magnet is near the north pole of another magnet?

3. Why does a compass point north?

22

Glossary

attracts (uh-TRAKTS): pulls toward force (FORS): something that pulls or pushes something elsemagnet (MAG-nit): an object that attracts iron and has a magnetic fieldmagnetic field (mag-NEH-tik FEELD): area around a magnet with the power to attract ironpoles (POLES): the two opposite ends of a magnetrepel (rih-PEL): to push away

23

24

Indexattracts 8, 13 compass 20Earth(s) 16, 18, 20iron 7, 8

Websiteswww.kids-science-experiments.com/invisibleforce.htmlwww.sciencebob.com/experiments/electromagnet.phpwww.bbc.co.uk/schools/ks2bitesize/science/physical_processes/ magnet_springs/play.shtmlwww.bbc.co.uk/schools/ks2bitesize/science/physical_processes/ magnet_springs/read1.shtmlhttp://pbskids.org/zoom/activities/do/funnyfamilyfridgemag.html

About the AuthorWhen Buffy Silverman was a child, one of her prized possessions was a red horseshoe magnet. Now she writes science books for children.

magnetic field 6, 8, 16, 20pole(s) 10, 12, 13, 14, 16, 17, 18repel 14

Comprehension & Extension:

• Summarize:

How does a magnet work? What is the difference between repel and attract?

• TexttoSelfConnection:

Have you ever used a magnet? What can you do with a magnet?

• Extension:Five Facts!

Write five facts about magnets that you learned from the book.

Teaching Focus:

Vocabulary: Opposites

Look in the book. Find

the opposite ofnorth,

attract,and pull.

Level:JWordCount:220100thWord:two (page 12)

Sight Words I Used:doeshasotherthatwhat

Vocabulary Check:

Use glossary words in a sentence.

Levels 1

-2

Levels 1

-2Tips on Reading this Book with Children:

1. Readthetitle.

Predictions – after reading the title have children make predictions about the book.

2. Takeabookwalk.

Talk about the pictures in the book. Use content words from the book as you take the picture walk.

Have children find one or two words they know as they do a picture walk.

3. Havechildrenfindwordstheyrecognizeinthetext.

4. Havechildrenreadtheremainingtextaloud.

5. StrategyTalk–usetoassistchildrenwhilereading. • Getyourmouthready • Lookatthepicture • Think…doesitmakesense • Think…doesitlookright • Think…doesitsoundright • Chunkit–bylookingforapartyouknow

6. Readitagain.

7. Completetheactivitiesattheendofthebook.My

ScienceLibrary

MyScienceLibrary

www.rourkeclassroom.com

Magnet P

ower

Silverm

an

Rourke C

lassroom

Have you ever wondered about the science all around us? Plants grow and change, the Sun rises to warm the Earth, and matter changes from one form to another. Investigate Life, Physical, Earth, and Technology science topics with Rourke’s My Science Library. This library explores NSTA science standards with engaging text and colorful images to support readers from kindergarten to third grade. Are you ready to investigate?

Books in My Science Library:Animal AdaptationsAnimal HabitatsEarth’s Changing SurfaceFloating and SinkingI Use a MouseLiving or Nonliving?

Magnet PowerMatter Comes in All ShapesMe and My Shadow: A Book about LightPlant AdaptationsPlant Life CyclesWhat’s the Weather Like Today?

Printed in China