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Reading for Meaning Plate Tectonics Pg. 158 Introduction Page What did the scientists in the 1960's propose? What do these plates carry? What is a scientific theory? How Plates Move? What does the theory of plate tectonics state? What force is great enough to move Earth's heavy plates? What happens as the plates move? What do these changes in the Earth's surface include? Plate Boundaries Where do the edges of Earth's plates meet? What forms along these boundaries? What are the 3 kinds of plate boundaries? Spreading Boundaries What are the plates doing at a spreading boundary? Where do MOST spreading boundaries occur? When spreading boundaries occur on land what do they create? Colliding Boundaries What are the plates doing at a colliding boundary? What happens in the first type of collision? What happens in the second type of collision? What happens in the third type of collision? Sliding Boundaries What are the plates doing at a sliding boundary? What happens to the crust at a sliding boundary? Plate Motions Over Time What does the movement of Earth's plates do? How long ago did Pangea exist? Challenge Question The 3 types of plate boundaries go by 2 different names each, list both names for each. Chapter 4 Section 5 The Theory of Plate Tectonics Vocabulary Keynote Page 158 WORDS • • • Your keynote should have 8 total slides when you turn it in, the first one being the title page. 1 vocabulary word per slide Each word/slide should have the following: • The word • Definition (from science text) • Example • Picture • • • • • • • plate plate tectonics fault spreading boundary rift valley colliding boundary sliding boundary
