Science - Carson Dellosa
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Science
Grade 7
Spectrum? An imprint of Carson-Dellosa Publishing LLC
Greensboro, North Carolina
0-7696-5367-7CISPCWBKsec1_0-7696-3864-3CISPCWBK.qxdsec.110/28/111:55PMPage2
Photo Credit: Page 120. NOAA Photo Library. At The Ends of The Earth Collection. Hut Point Shelter at McMurdo Station. Antarctica.
Spectrum An imprint of Carson-Dellosa Publishing LLC P.O. Box 35665 Greensboro, NC 27425 USA
? 2015 Carson-Dellosa Publishing LLC. Except as permitted under the United States Copyright Act, no part of this publication may be reproduced, stored, or distributed in any form or by any means (mechanically, electronically, recording, etc.) without the prior written consent of Carson-Dellosa Publishing LLC. Spectrum is an imprint of Carson-Dellosa Publishing LLC.
Printed in the USA ? All rights reserved.
ISBN 978-1-4838-1171-0
01-227147811
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Spectrum Science Grade 7
Table of Contents
Chapter 1 Science as Inquiry Lesson 1.1 Keys to Unlocking the World . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Lesson 1.2 The Human Hobbits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Lesson 1.3 Searching for Our Ancestors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Lesson 1.4 Vanishing Nature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Lesson 1.5 Lab Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Lesson 1.6 Squeaky Clean . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Lesson 1.7 Older Than Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Lesson 1.8 Measuring the Stars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Lesson 1.9 Changing with the Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Review Chapter 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Chapter 2 Physical Science Lesson 2.1 Everything Must Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Lesson 2.2 A Common Reaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Lesson 2.3 Testing the Waters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Lesson 2.4 Malleable Metals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Lesson 2.5 A Force to Be Reckoned With . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Lesson 2.6 The Science of Vacuums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Lesson 2.7 Sports Science . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Lesson 2.8 The Spectrum: The Long and the Short of It . . . . . . . . . . . . . . . . . . . . . . . . 40 Lesson 2.9 The Smallest of the Small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Review Chapter 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Chapter 3 Life Science Lesson 3.1 Anatomy of a Cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Lesson 3.2 Homeostasis: The Balance of Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Lesson 3.3 The Great Debate: Nature Versus Nurture . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Lesson 3.4 The Ankle Bone's Connected to the Leg Bone . . . . . . . . . . . . . . . . . . . . . . 52
Spectrum Science Grade 7
Table of Contents
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Lesson 3.5 Antibiotics: Life Killing Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Lesson 3.6 Nature's Talented Weavers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Lesson 3.7 Journey for Survival . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Lesson 3.8 Animal IQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Lesson 3.9 Standing Tall and Strong . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Review Chapter 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Mid-Test Chapters 1?3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Chapter 4 Earth and Space Science Lesson 4.1 Frozen in Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Lesson 4.2 El Ni?o: Stirring Up Trouble Around the World . . . . . . . . . . . . . . . . . . . . . . . 70 Lesson 4.3 Mountain Mayhem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Lesson 4.4 Flowing Underground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Lesson 4.5 Everything Falls Apart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Lesson 4.6 Crystal Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Lesson 4.7 It Begins with a Bang . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Lesson 4.8 Earth's Closest Neighbor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Lesson 4.9 The Martian Question . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Review Chapter 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Chapter 5 Science and Technology Lesson 5.1 Copycats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Lesson 5.2 Where Art and Science Meet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Lesson 5.3 Buildings in the Clouds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Lesson 5.4 Focusing on the History of Eyeglasses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Lesson 5.5 The Instruments of Weather Science . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Lesson 5.6 The Power of Music . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Lesson 5.7 The Future's Calling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Lesson 5.8 Riding the Information Superhighway . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Spectrum Science Grade 7
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