Things Move

Things Move A Science A–Z Physical Series Word Count: 201 Things MoveVisit www.sciencea-z.com Written by Rhonda Lucas Donald www.sciencea-z.com

Things KEY ELEMENTS USED IN THIS BOOK Move The Big Idea: The world around us is in motion, full of living andWritten by Rhonda Lucas Donald nonliving things that move in ways that can be predicted and described. Pushing, pulling, friction, and gravity are all forces that affect objects. www.sciencea-z.com These forces can make things move, change their speed, change their direction, and stop them. Much of daily life depends on motion. We have to judge the amount of force to use when causing things to move, stop, or change direction. Knowing how and why things move allows us to work, play, get around, and complete everyday tasks. Key words: bounce, down, fall, fast, force, heavy, light, move, pull, push, rest, roll, slow, speed, stop, swing, turn, up Key comprehension skill: Cause and effect Other suitable comprehension skills: Compare and contrast; classify information; main idea and details; identify facts; elements of a genre Key reading strategy: Summarize Other suitable reading strategies: Connect to prior knowledge; ask and answer questions; visualize; retell Photo Credits: Front cover (top): © iStockphoto.com/Iia Dukhnovska; front cover (middle), page 4 (bottom): © Kian Khoon Tan/123RF; front cover (bottom): © iStockphoto.com/Edward Shaw; back cover: © iStockphoto. com/Dave Logan; title page: © iStockphoto.com/Dmitriy Shironosov; page 3 (top): © iStockphoto.com/ Ramon Berk; page 3 (bottom): © iStockphoto.com/Kristian Sekulic; page 4 (top left): © iStockphoto. com/Jason Lugo; page 4 (top right): © iStockphoto.com/Vasiliki Varvaki; page 5 (top): © iStockphoto. com/Leah-Anne Thompson; page 5 (bottom): © Brad Calkins/Dreamstime; page 6: © iStockphoto.com/ Catherine Lane; page 7: © Susan Stevenson/123RF; page 8 (top): © iStockphoto.com/Bonnie Jacobs; page 8 (bottom): © iStockphoto.com/Tabitha Patrick; page 9 (top): © iStockphoto.com/Daniel Loiselle; page 9 (bottom): © iStockphoto.com/Nina Shannon; page 10: © iStockphoto.com/Jim Parkin; page 11 (top left): © iStockphoto.com/Melissa Carroll; page 11 (top right): © iStockphoto.com/Kate Leigh; page 11 (bottom): © iStockphoto.com/Brian McEntire; page12: © iStockphoto.com/Le Do; page 13: © iStockphoto.com/Acky Yeung; page 14 (top): © iStockphoto.com/Mark Evans; page 14 (bottom): © iStockphoto.com/Glenda Powers; page 15: © Duard Van Der Westhuizen/123RF; page 16 (top): © iStockphoto.com/Lawrence Sawyer; page 16 (middle): © iStockphoto.com/Camilla Wisbauer; page 16 (bottom): © Pzaxe/Dreamstime.com; page 16 (bottom right): © iStockphoto.com/studiovancaspel Things Move Reading Levels I © Learning A–Z Learning A–Z 350L Written by Rhonda Lucas Donald Lexile All rights reserved. Correlations Fountas and Pinnell* I www.sciencea-z.com *Correlated independent reading level

All around you, things move. What makes things move?Things roll, bounce, and fly. Let’s find out.Kids run and jump. 4 3

Push the scooter.Pull thesled.Things stay at rest until A little force can movea force moves them. A things that are light. Emptypush is a force. A pull swings are easy to push.is a force, too. 6 5

It takes more force Speed is how fastto move heavy things. something moves. ThingsA swing with a person can move fast or slow.on it is harder to push. 8 7

More force makes things Forces can also changemove faster. Less force the way things move. A carmakes things move slower. can move up or down a hill. It can turn from side to 9 side. It can make a circle. 10

How are these things moving? Moving things keep moving. It takes a force to stop them. 11 12

When a force stops a car, If you let go of an egg,you keep moving. So use it falls. Crack! A forceyour seat belt or car seat! pulled it to the ground. 13 14

A force also pulls you Forces move thingstoward the ground. This in many fun ways!is why you go down a slide. 16 15