Podcast
Questions and Answers
What is plate tectonics?
What is plate tectonics?
- The theory that the earth's crust is made of solid rock
- The theory that the earth's crust is broken up into plates (correct)
- The theory that the earth's crust is flat and unchanging
- The theory that the earth's crust is a single, unbroken piece
What was the Deep Sea Drilling Project (DSDP) designed to do?
What was the Deep Sea Drilling Project (DSDP) designed to do?
- Map the locations of underwater volcanoes
- Create artificial islands in the ocean
- Analyze the ocean floor by drilling down and extracting samples (correct)
- Study marine life in the deep sea
What was the name of the ship involved in the Deep Sea Drilling Project?
What was the name of the ship involved in the Deep Sea Drilling Project?
- Aqua Investigator
- Glomar Challenger (correct)
- Marine Voyager
- Ocean Explorer
What is the Mid-Atlantic Ridge?
What is the Mid-Atlantic Ridge?
What is the evidence in support of the plate tectonics theory that was uncovered through analysis of samples drilled from the ocean floor?
What is the evidence in support of the plate tectonics theory that was uncovered through analysis of samples drilled from the ocean floor?
What was the initial theory about the formation of the oceanic ridge system?
What was the initial theory about the formation of the oceanic ridge system?
Why were some scientists initially skeptical about the idea of seafloor spreading causing the formation of the Mid-Atlantic Ridge?
Why were some scientists initially skeptical about the idea of seafloor spreading causing the formation of the Mid-Atlantic Ridge?
What evidence was found in the samples taken from the ridge system that supported the theory of seafloor spreading?
What evidence was found in the samples taken from the ridge system that supported the theory of seafloor spreading?
What did the increased thickness of sediment in samples taken farther from the ridge crest indicate?
What did the increased thickness of sediment in samples taken farther from the ridge crest indicate?
What did the evidence from the samples taken from the ridge system provide strong support for?
What did the evidence from the samples taken from the ridge system provide strong support for?
What was the initial cause of perplexity for some scientists regarding the formation of the oceanic ridge system?
What was the initial cause of perplexity for some scientists regarding the formation of the oceanic ridge system?
What did the samples taken from the ridge system reveal about the rocks found at or near the seam of the ridge?
What did the samples taken from the ridge system reveal about the rocks found at or near the seam of the ridge?
What did the thickness of sediment found near the ridge crest reveal?
What did the thickness of sediment found near the ridge crest reveal?
What did the samples taken from the ridge system provide strong evidence for?
What did the samples taken from the ridge system provide strong evidence for?
What was responsible for creating the new layers of oceanic crust that spread out from the Mid-Atlantic Ridge?
What was responsible for creating the new layers of oceanic crust that spread out from the Mid-Atlantic Ridge?
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