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Dr. Timothy Cooney
Professor of Earth Science and
Science Education
University of Northern Iowa (UNI)
Cedar Falls, Iowa
Dr. Jim Cummins
Professor
Department of Curriculum,
Teaching, and Learning
The University of Toronto
Toronto, Canada
Barbara Kay Foots, M.Ed.
Science Education Consultant
Houston, Texas
Dr. James Flood
Distinguished Professor of Literacy
and Language
School of Teacher Education
San Diego State University.
San Diego, California
Dr. M. Jenice Goldston
Associate Professor of Science
Education
Department of Elementary
Education Programs
University of Alabama
Tuscaloosa, Alabama
 
 
Dr. Shirley Gholston Key
Associate Professor of Science
Education
Instruction and Curriculum
Leadership Department
College of Education
University of Memphis
Memphis, Tennessee
Dr. Diane Lapp
Distinguished Professor of
Reading and Language Arts
in Teacher Education
San Diego State University
San Diego, California
Sheryl A. Mercier
Classroom Teacher
Dunlap Elementary School
Dunlap, California
Dr. Karen L. Ostlund
UTeach,
College of Natural Sciences

The University of Texas at Austin
Austin, Texas
Dr. Nancy Romance
Professor of Science Education
& Principal Investigator
NSF/IERI Science IDEAS
Project
Charles E. Schmidt College
of Science
Florida Atlantic University
Boca Raton, Florida
 
 
Dr. William Tate
Chair and Professor of Education
and Applied Statistics
Department of Education
Washington University
St Louis, Missouri
Dr. Kathryn C. Thornton
Professor
School of Engineering and
Applied Science
University of Virginia
Charlottesville, Virginia
Dr. Leon Ukens
Professor of Science Education
Department of Physics, Astronomy, and Geosciences
Towson University
Towson, Maryland
Steve Weinberg
Consultant
Connecticut Center for
Advanced Technology
East Hartford, Connecticut
 
  ISBN: 0-328-14950-0
  Copyright © 2007 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
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or likewise. For information regarding permission(s), write to: Permissions Department, Scott Foresman,
1900 East Lake Avenue, Glenview, Illinois 60025.
  2 3 4 5 6 7 8 9 10 V063 13 12 11 10 09 08 07 06 05
  Illustrations
  Earth Science 5 Paul McCusker; 7 Jane Whitney
  Life Science 5, 7 David Bathurst
  Physical Science 7 David Bathurst
  Photographs
  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. Unless otherwise acknowledged, all photographs are the property of Scott Foresman, a division
of Pearson Education. Photo locators denoted as follows: Top (T), Center (C), Bottom (B), Left (L), Right (R),
Background (Bkgd)
  Earth Science 1 Kevin Barry Photography; 3 Courtesy of University of Florida International Center for Lightning
Research and Testing
  Life Science 1 James Balog/Getty Images; 2 (T) Getty Images, (C) Joe McDonald/Corbis, (B) Darrell Gulin/Corbis;
3 Owaki-Kulla/Corbis
  Physical Science 2 Wend Images/Alamy
  Space and Technology 3 (Bkgd) P. Goetgheluck/Publiphoto/Science Photo Library Ltd.; 4 Patrick Ward/Corbis