Floating and Sinking
Books in My Science Library: Animal Adaptations Animal Habitats Earth’s Changing Surface Floating and Sinking I Use a Mouse Living or Nonliving?
Magnet Power Matter Comes in All Shapes Me and My Shadow: A Book about Light Plant Adaptations Plant Life Cycles What’s the Weather Like Today?
www.rourkeclassroom.com Printed in China
Floating and Sinking Hansen Rourke Classroom
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?
nant s: Conso
Phonic Blends
ok to find o b e h t Look in in with a g e b t a words th blend nt consona le: dr, fl, sk). p (For exam
Tips on Reading this Book with Children:
Comprehension & Extension:
Sight Words I Used:
1. Read the title.
• Summarize:
because look that what
Predictions – after reading the title have children make predictions about the book.
2. Take a book walk.
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. Have children find words they recognize in the text. 4. Have children read the remaining text aloud. 5. Strategy Talk – use to assist children while reading. • Get your mouth ready • Look at the picture • Think…does it make sense • Think…does it look right • Think…does it sound right • Chunk it – by looking for a part you know
1-2
My Science Library
s
l L eve
6. Read it again. 7. Complete the activities at the end of the book.
Describe why some things float and some things sink.
• Text to Self Connection:
Have you ever been swimming? If so, did you float? If not, do you think you would float? Why or why not?
• Extension: T-Chart Graphic Organizer
Fold a piece of paper in half to make a T chart. Label the one column with the word sink and the other with the word float. Make a list of things on your chart that either float or sink.
My Science Library
1-2
us:
g Foc Teachin
l L eve
s
Level: I Word Count: 230 100th Word: made (page 10)
Vocabulary Check: Use glossary words in a sentence.
Floating and Sinking by Amy S. Hansen Science Content Editor: Kristi Lew
www.rourkeclassroom.com
Science content editor: Kristi Lew A 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 © Jules_Kitano, Michael C. Gray; Cover logo frog © Eric Pohl, test tube © Sergey Lazarev; Page 4 © Russlann; Page 5 © Daniel Gangur; Page 7 © Fotocrisis; Page 9 © Blue Door Publishing; Page 11 © Sascha Burkard; Pages 13 © Blue Door Publishing; Page 14 © Olinchuk; Page 15 © Sandra van der Steen; Page 17 © Lane V. Erickson; Page 19 © Kris Holland; Page 21 © ilFede Editor: Kelli Hicks Cover and page design by Nicola Stratford, bdpublishing.com Library of Congress Cataloging-in-Publication Data Hansen, Amy. Floating and sinking / Amy S. Hansen. p. cm. -- (My science library) Includes bibliographical references and index. ISBN 978-1-61741-738-2 (Hard cover) (alk. paper) ISBN 978-1-61741-940-9 (Soft cover) 1. Floating bodies--Juvenile literature. 2. Buoyant ascent (Hydrodynamics)--Juvenile literature. 3. Archimedes’ principle--Juvenile literature. I. Title. QC147.5.H36 2012 532’.25--dc22 2011003869 Rourke Publishing Printed in China, Power Printing Company Ltd Guangdong Province 042011 042011LP
www.rourkeclassroom.com - [email protected] Post Office Box 643328 Vero Beach, Florida 32964
Table of Contents What Floats? What Sinks?.... 4 What Is Density?....................... 8 Does It Float?............................ 14 Why Do Boats Float?.............. 16 Show What You Know............ 22 Glossary...................................... 23 Index............................................ 24
What Floats? What Sinks? Drop a dry cork in the water. What happens? It floats.
4
Now drop a penny. It sinks. What makes one of them float and one of them sink?
5
Take a close look at the cork. Can you see tiny holes? Those holes trap air. Air is lighter than water.
6
7
What Is Density? Tiny air pockets are one of the things that makes the cork have less density than water. Anything that has less density than water will float.
8
ll of u f cup a na s a n h a t t me hs less a h T eig r. w e s t k a r co fw o l l u f cup
9
Now look at the penny. The penny is made of metal. Metal does not have the same little holes.
10
11
Most metal has greater density than water. Anything that has greater density than water will sink.
12
nies n e p up c f o a l l an h p fu t u of e c r e o s A u hs m r beca g i e w ate w f o full sity. n e d
13
Does It Float? Test some other things. Will a carrot float or sink?
14
How about marshmallows?
t arro c a at h t d hse s s r e a u m ’re ug If yo sink and oat, you ? ld uld fl u know o wou w lows w did yo l a m . Ho t c e r cor
15
Why Do Boats Float? Other things float. Boats float. Some boats are made of metal. The metal penny sank. Why do boats float? top e h t uld ims k o s w e ano r. What c e Th te r? a e w w e o l of th it sink e mak
16
17
Boats float because of their shape. Boat builders bend the metal to make a big air pocket. The air pocket lets the boat float.
18
air pocket
A ca no pock e has o n et in stea e big air tiny do ai or m r pocket f many s lik arsh e mal lows corks .
19
Big ships float too. A ship’s air pockets are big enough to float the ship and the heavy cargo it carries.
20
21
1. A grape has more density than water. Does that mean it will sink or float? 2. Can you think of something that will float in water? 3 Why does a metal boat float?
22
Glossary air pockets (AIR PAH-kits): enclosures that hold air in and are used for floatation cork (KORK): a stopper used at the end of a bottle, usually made from the soft bark of a tree density (DEN-si-tee): the amount of mass something has compared to its volume or size floats (FLOHTS): rests on the top of a liquid or hovers in the air metal (MET-uhl): a material such as iron, copper, gold, or silver that is usually hard and shiny when it is polished shape (SHAYP): the form of an object sinks (SINGKS): falls below the surface of a liquid
23
Index air pocket(s) 8, 18, 20 cork(s) 6, 8 density 8, 12
float(s) 4, 5, 8, 14, 16, 18, 20 shape 18 sink(s) 4, 5, 12, 14, 16
Websites www.kids-science-experiments.com/cat_floating.html www.exploratorium.edu/snacks/descartes_diver/ www.tryscience.org/experiments/experiments_begin. html?buildaraft www.tryscience.org/experiments/experiments_begin. html?oilslick About the Author Amy S. Hansen is a science writer who likes to practice her floating and sinking skills by swimming almost every day in the summer. She lives in the Washington, D.C. area with her husband, two sons, and two cats.
24
nant s: Conso
Phonic Blends
ok to find o b e h t Look in in with a g e b t a words th blend nt consona le: dr, fl, sk). p (For exam
Tips on Reading this Book with Children:
Comprehension & Extension:
Sight Words I Used:
1. Read the title.
• Summarize:
because look that what
Predictions – after reading the title have children make predictions about the book.
2. Take a book walk.
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. Have children find words they recognize in the text. 4. Have children read the remaining text aloud. 5. Strategy Talk – use to assist children while reading. • Get your mouth ready • Look at the picture • Think…does it make sense • Think…does it look right • Think…does it sound right • Chunk it – by looking for a part you know
1-2
My Science Library
s
l L eve
6. Read it again. 7. Complete the activities at the end of the book.
Describe why some things float and some things sink.
• Text to Self Connection:
Have you ever been swimming? If so, did you float? If not, do you think you would float? Why or why not?
• Extension: T-Chart Graphic Organizer
Fold a piece of paper in half to make a T chart. Label the one column with the word sink and the other with the word float. Make a list of things on your chart that either float or sink.
My Science Library
1-2
us:
g Foc Teachin
l L eve
s
Level: I Word Count: 230 100th Word: made (page 10)
Vocabulary Check: Use glossary words in a sentence.
Books in My Science Library: Animal Adaptations Animal Habitats Earth’s Changing Surface Floating and Sinking I Use a Mouse Living or Nonliving?
Magnet Power Matter Comes in All Shapes Me and My Shadow: A Book about Light Plant Adaptations Plant Life Cycles What’s the Weather Like Today?
www.rourkeclassroom.com Printed in China
Floating and Sinking Hansen Rourke Classroom
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?
Magnet Power Matter Comes in All Shapes Me and My Shadow: A Book about Light Plant Adaptations Plant Life Cycles What’s the Weather Like Today?
www.rourkeclassroom.com Printed in China
Floating and Sinking Hansen Rourke Classroom
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?
nant s: Conso
Phonic Blends
ok to find o b e h t Look in in with a g e b t a words th blend nt consona le: dr, fl, sk). p (For exam
Tips on Reading this Book with Children:
Comprehension & Extension:
Sight Words I Used:
1. Read the title.
• Summarize:
because look that what
Predictions – after reading the title have children make predictions about the book.
2. Take a book walk.
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. Have children find words they recognize in the text. 4. Have children read the remaining text aloud. 5. Strategy Talk – use to assist children while reading. • Get your mouth ready • Look at the picture • Think…does it make sense • Think…does it look right • Think…does it sound right • Chunk it – by looking for a part you know
1-2
My Science Library
s
l L eve
6. Read it again. 7. Complete the activities at the end of the book.
Describe why some things float and some things sink.
• Text to Self Connection:
Have you ever been swimming? If so, did you float? If not, do you think you would float? Why or why not?
• Extension: T-Chart Graphic Organizer
Fold a piece of paper in half to make a T chart. Label the one column with the word sink and the other with the word float. Make a list of things on your chart that either float or sink.
My Science Library
1-2
us:
g Foc Teachin
l L eve
s
Level: I Word Count: 230 100th Word: made (page 10)
Vocabulary Check: Use glossary words in a sentence.
Floating and Sinking by Amy S. Hansen Science Content Editor: Kristi Lew
www.rourkeclassroom.com
Science content editor: Kristi Lew A 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 © Jules_Kitano, Michael C. Gray; Cover logo frog © Eric Pohl, test tube © Sergey Lazarev; Page 4 © Russlann; Page 5 © Daniel Gangur; Page 7 © Fotocrisis; Page 9 © Blue Door Publishing; Page 11 © Sascha Burkard; Pages 13 © Blue Door Publishing; Page 14 © Olinchuk; Page 15 © Sandra van der Steen; Page 17 © Lane V. Erickson; Page 19 © Kris Holland; Page 21 © ilFede Editor: Kelli Hicks Cover and page design by Nicola Stratford, bdpublishing.com Library of Congress Cataloging-in-Publication Data Hansen, Amy. Floating and sinking / Amy S. Hansen. p. cm. -- (My science library) Includes bibliographical references and index. ISBN 978-1-61741-738-2 (Hard cover) (alk. paper) ISBN 978-1-61741-940-9 (Soft cover) 1. Floating bodies--Juvenile literature. 2. Buoyant ascent (Hydrodynamics)--Juvenile literature. 3. Archimedes’ principle--Juvenile literature. I. Title. QC147.5.H36 2012 532’.25--dc22 2011003869 Rourke Publishing Printed in China, Power Printing Company Ltd Guangdong Province 042011 042011LP
www.rourkeclassroom.com - [email protected] Post Office Box 643328 Vero Beach, Florida 32964
Table of Contents What Floats? What Sinks?.... 4 What Is Density?....................... 8 Does It Float?............................ 14 Why Do Boats Float?.............. 16 Show What You Know............ 22 Glossary...................................... 23 Index............................................ 24
What Floats? What Sinks? Drop a dry cork in the water. What happens? It floats.
4
Now drop a penny. It sinks. What makes one of them float and one of them sink?
5
Take a close look at the cork. Can you see tiny holes? Those holes trap air. Air is lighter than water.
6
7
What Is Density? Tiny air pockets are one of the things that makes the cork have less density than water. Anything that has less density than water will float.
8
ll of u f cup a na s a n h a t t me hs less a h T eig r. w e s t k a r co fw o l l u f cup
9
Now look at the penny. The penny is made of metal. Metal does not have the same little holes.
10
11
Most metal has greater density than water. Anything that has greater density than water will sink.
12
nies n e p up c f o a l l an h p fu t u of e c r e o s A u hs m r beca g i e w ate w f o full sity. n e d
13
Does It Float? Test some other things. Will a carrot float or sink?
14
How about marshmallows?
t arro c a at h t d hse s s r e a u m ’re ug If yo sink and oat, you ? ld uld fl u know o wou w lows w did yo l a m . Ho t c e r cor
15
Why Do Boats Float? Other things float. Boats float. Some boats are made of metal. The metal penny sank. Why do boats float? top e h t uld ims k o s w e ano r. What c e Th te r? a e w w e o l of th it sink e mak
16
17
Boats float because of their shape. Boat builders bend the metal to make a big air pocket. The air pocket lets the boat float.
18
air pocket
A ca no pock e has o n et in stea e big air tiny do ai or m r pocket f many s lik arsh e mal lows corks .
19
Big ships float too. A ship’s air pockets are big enough to float the ship and the heavy cargo it carries.
20
21
1. A grape has more density than water. Does that mean it will sink or float? 2. Can you think of something that will float in water? 3 Why does a metal boat float?
22
Glossary air pockets (AIR PAH-kits): enclosures that hold air in and are used for floatation cork (KORK): a stopper used at the end of a bottle, usually made from the soft bark of a tree density (DEN-si-tee): the amount of mass something has compared to its volume or size floats (FLOHTS): rests on the top of a liquid or hovers in the air metal (MET-uhl): a material such as iron, copper, gold, or silver that is usually hard and shiny when it is polished shape (SHAYP): the form of an object sinks (SINGKS): falls below the surface of a liquid
23
Index air pocket(s) 8, 18, 20 cork(s) 6, 8 density 8, 12
float(s) 4, 5, 8, 14, 16, 18, 20 shape 18 sink(s) 4, 5, 12, 14, 16
Websites www.kids-science-experiments.com/cat_floating.html www.exploratorium.edu/snacks/descartes_diver/ www.tryscience.org/experiments/experiments_begin. html?buildaraft www.tryscience.org/experiments/experiments_begin. html?oilslick About the Author Amy S. Hansen is a science writer who likes to practice her floating and sinking skills by swimming almost every day in the summer. She lives in the Washington, D.C. area with her husband, two sons, and two cats.
24
nant s: Conso
Phonic Blends
ok to find o b e h t Look in in with a g e b t a words th blend nt consona le: dr, fl, sk). p (For exam
Tips on Reading this Book with Children:
Comprehension & Extension:
Sight Words I Used:
1. Read the title.
• Summarize:
because look that what
Predictions – after reading the title have children make predictions about the book.
2. Take a book walk.
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. Have children find words they recognize in the text. 4. Have children read the remaining text aloud. 5. Strategy Talk – use to assist children while reading. • Get your mouth ready • Look at the picture • Think…does it make sense • Think…does it look right • Think…does it sound right • Chunk it – by looking for a part you know
1-2
My Science Library
s
l L eve
6. Read it again. 7. Complete the activities at the end of the book.
Describe why some things float and some things sink.
• Text to Self Connection:
Have you ever been swimming? If so, did you float? If not, do you think you would float? Why or why not?
• Extension: T-Chart Graphic Organizer
Fold a piece of paper in half to make a T chart. Label the one column with the word sink and the other with the word float. Make a list of things on your chart that either float or sink.
My Science Library
1-2
us:
g Foc Teachin
l L eve
s
Level: I Word Count: 230 100th Word: made (page 10)
Vocabulary Check: Use glossary words in a sentence.
Books in My Science Library: Animal Adaptations Animal Habitats Earth’s Changing Surface Floating and Sinking I Use a Mouse Living or Nonliving?
Magnet Power Matter Comes in All Shapes Me and My Shadow: A Book about Light Plant Adaptations Plant Life Cycles What’s the Weather Like Today?
www.rourkeclassroom.com Printed in China
Floating and Sinking Hansen Rourke Classroom
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?
