'Drilling samples' diaporamas de présentation

Jeopardy

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Warm Up!

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Sea Floor Spreading

Sea Floor Spreading. Chapter 4.4. What is the mid-ocean ridge? What do we use to map the mid-ocean ridge?. The mid-ocean ridge is the longest chain of mountains in the world. The mid-ocean ridge is mapped using Sonar. What idea did Harry Hess propose?.

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Review from yesterday!

Review from yesterday!. http://wrgis.wr.usgs.gov/docs/parks/animate/A08.gif. What is the theory of continental drift?. the idea that the continents were once all joined together in one super-continent called Pangaea and slowly moved to their current positions. Key concepts.

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Sea-Floor Spreading

Sea-Floor Spreading. Key Concepts What is the process of sea-floor spreading? What is the evidence for sea-floor spreading? What happens at deep-ocean trenches?. Key Terms. Mid-ocean ridge Sonar Sea-floor spreading Deep-ocean trench subduction. Mapping the Ocean Floor.

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Sea-Floor Spreading

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Section 4.4- Sea Floor Spreading Reading Notes 1. What is a mid-ocean ridge?

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