Genre Nonfiction Comprehension Skill Cause and Effect Text Features Captions Diagram Text Boxes Glossary Science Content Matter Scott Foresman Science 3.10 ISBN 0-328-13837-1 ì<(sk$m)=bdidhb< +^-Ä-U-Ä-U Vocabulary Extended Vocabulary atom buoyancy density element mass matter periodic table pressure property volume balsa wood cargo ship displace hull steel swim bladder withstand What did you learn? 1. Why do some objects float in water? 2. Where is water pressure strongest? 3. Why do ships have large, hollow hulls? 4. have read about how density and buoyancy are related. Write to explain how an object’s density affects its buoyancy in water. Include details from the book. 5. 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). Opener: Lester Lefkowitz/Corbis ; 1 Doug Wilson/Corbis; 5 Doug Wilson/Corbis; 9 (BR) ©SPL/Photo Researchers, Inc.; 10 Lester Lefkowitz/Corbis. Scott Foresman/Dorling Kindersley would also like to thank: 15 (CA) IFREMER, Paris/DK Images. Unless otherwise acknowledged, all photographs are the copyright © of Dorling Kindersley, a division of Pearson. ISBN: 0-328-13837-1 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 by Nairobi Tol