Think about the Launch Lab you did to determine fault movement in California, and record your response to this science journal.

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1 Chapter Preview Before you read the chapter, use the "What I Know" column to list three things you know about plate tectonics. Then list three questions you have about plate tectonics in the "What 1 Want to Find Out" column SCIENCE JOURNAL - Think about the Launch Lab you did to determine fault movement in California, and record your response to this science journal. Infer what might be causing these large pieces of land to move. 187 Copyright 0 Glencoe/McC;raw-liill, a division of The McGraw-Hill Companies. Inc. vivaa vbsurd I

2 MAIN IDEA DETAILS Scan Section 1 of your text. Write three questions that come to mind from reading the headings and figure captions. Review Vocabulary Use your text to define the following term. hypothesis New Vocabulary Use your text to define each term. continental drift Pangaea 62) zl 4t 188 Copyright Glencoe:McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

3 MAIN IDEA DETAILS Scan Section 1 of your text. Write three questions that come to mind from reading the headings and figure captions. Review Vocabulary Use your text to define the following term. hypothesis New Vocabulary Use your text to define each term. continental drift Pangaea 7) 188 Copyright Cilencoc.:McGraw-Hi II, a division of The McGraw-Hill Companies, Inc.

4 Analyze the evidence Wegener had supporting his hypothesis of continental drift. Evidence Concept/Idea Examples of evidence Rock evidence Fossil evidence Climate evidence A Rejected Hypothesis Use with page 472. Identify two reasons why scientists rejected Wegener's hypothesis of continental drift. ANALOGY -Compare the concept of continental drift to a jigsaw puzzle. 'Mr 190 Copyright e Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

5 SECTION 2 Seafloor Spreading MAIN IDEA DETAILS] Consider the objectives of Section Write three questions that come to mind from reading these statements. 2. Review Vocabulary Use a dictionary to define the following term. basalt New Vocabulary ) Use your text to define each term. magnetometer magnetic reversal paleomagnetism isochron seafloor spreading 191 Copyright 0 Glencoe/.McGraw-Hill, a division of The McGraw-Hill Companies, Inc. AC

6 tvidgrleusrn Use with page 476. txpiain wny me seafroor exnwits magnetic reversal, but the continents do not. Ocean Floor Topography Use with pages Organize information about ocean floor topography by completing the following flow chart. Topographic features on ocean floor Earthquakes and volcanoes common Deepest spot in ocean- 1 1 km deep Ocean Rocks and Sediments Use with page 475. Predict where the oldest rocks in the Atlantic Ocean are. Predict where the youngest rocks are. Use maps in your text to help you answer this question. 192 Copyright 0 GlencoeiMcGraw-Hill. a division of The McGraw-Hill Companies. Inc.

7 Magnetism Use with page 476. Illustrate magnetic symmetry arouna an ocean nage. use rfguic -LL (and 13 to help you. Show the following features: ocean ridge AP, areas of reversed polarity areas of normal polarity relative ages of rocks ` bescribe how a scientist would know how to draw isochrons to connect basalt flows on land with the ocean floor. Seafloor Organize information about seafloor spreading by completing the Spreading following cycle diagram. Use with page 479. magma pushed into ocean ridge plate moves outward from ridge REAL-WORLD CONNECTION Suppose you could measure the distance between New York and London and between Los Angeles and Singapore over several thousand years. Describe how those distances would change compared to their distances today..t 4r 193 Copyright 0 Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies. Inc. c- I

8 [AIN IDEA DETAILS] Scan Section 3 of your text. Use the checklist below as a guide. Read all the section titles. Read all bold words. Look at all figures and photos and read their captions. Think about what you already know about plate tectonics. Write three questions that you think will be answered in this section. New Vocabulary Read the definitions below, then write the term for each in the left column. huge slabs of continental or oceanic crust fitting together along their edges place where two plotes are moving apart long, narrow depression caused by divergent boundary place where two plates are moving toward each other when one of two plates is descending under the other place where two plates slide horizontally past each other ( Academic Vocabulary Define the following term. involve 194 Copyright 0 CitencoetMcGraw-Hill, a division of The McGraw-Hill Companies, Inc. X--