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Questions and Answers
What was the initial uncertainty about the formation of the underwater ridge system?
What was the initial uncertainty about the formation of the underwater ridge system?
- The age of the rocks found at the ridge
- Whether the ridge was a tectonic plate boundary (correct)
- The thickness of sediment near the ridge
- Whether the ridge was caused by volcanic activity
What did the thin layers of sediment near the ridge crest and thicker sediment farther away indicate?
What did the thin layers of sediment near the ridge crest and thicker sediment farther away indicate?
- Increased erosion farther from the crest
- Volcanic activity near the crest
- Lack of sedimentation near the crest
- Different time periods of existence (correct)
What did the samples taken from the ridge system reveal about the age of rocks near and away from the crest?
What did the samples taken from the ridge system reveal about the age of rocks near and away from the crest?
- Rocks near the crest were very old, getting younger farther away
- Uniform age of rocks across the ridge system
- Age of rocks did not correlate with distance from the crest
- Rocks near the crest were very young, getting older farther away (correct)
What did the theory of seafloor spreading propose?
What did the theory of seafloor spreading propose?
What did the evidence from drilling samples provide strong support for?
What did the evidence from drilling samples provide strong support for?
What is plate tectonics?
What is plate tectonics?
What was the purpose of the Deep Sea Drilling Project (DSDP)?
What was the purpose of the Deep Sea Drilling Project (DSDP)?
What was the name of the ship used for the Deep Sea Drilling Project (DSDP)?
What was the name of the ship used for the Deep Sea Drilling Project (DSDP)?
What important feature is found on the Atlantic Ocean basin?
What important feature is found on the Atlantic Ocean basin?
What did the Deep Sea Drilling Project (DSDP) aim to extract from the ocean floor?
What did the Deep Sea Drilling Project (DSDP) aim to extract from the ocean floor?
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