15 Questions
What is plate tectonics?
The theory that the earth's crust is broken up into plates
What was the Deep Sea Drilling Project (DSDP) designed to do?
Analyze the ocean floor by drilling down and extracting samples
What was the name of the ship involved in the Deep Sea Drilling Project?
Glomar Challenger
What is the Mid-Atlantic Ridge?
An underwater mountain range in the Atlantic Ocean
What is the evidence in support of the plate tectonics theory that was uncovered through analysis of samples drilled from the ocean floor?
The movement and interaction of tectonic plates
What was the initial theory about the formation of the oceanic ridge system?
It was caused by seafloor spreading
Why were some scientists initially skeptical about the idea of seafloor spreading causing the formation of the Mid-Atlantic Ridge?
It was difficult to believe that new oceanic crust was constantly being formed
What evidence was found in the samples taken from the ridge system that supported the theory of seafloor spreading?
Young rocks at or near the ridge crest and older rocks farther away
What did the increased thickness of sediment in samples taken farther from the ridge crest indicate?
Those areas had been there longer and had time to collect dust
What did the evidence from the samples taken from the ridge system provide strong support for?
The theory of plate tectonics
What was the initial cause of perplexity for some scientists regarding the formation of the oceanic ridge system?
The idea of the Mid-Atlantic Ridge being a tectonic plate boundary
What did the samples taken from the ridge system reveal about the rocks found at or near the seam of the ridge?
They were very young
What did the thickness of sediment found near the ridge crest reveal?
It was very thin near the ridge crest and increased farther away
What did the samples taken from the ridge system provide strong evidence for?
The theory of plate tectonics
What was responsible for creating the new layers of oceanic crust that spread out from the Mid-Atlantic Ridge?
Magma oozing up through the crack in the tectonic plate boundary
Test your knowledge of plate tectonics with this quiz! Explore the theory of the earth's crust being broken into tectonic plates and their movements. Assess your understanding of geological processes and their impact on the Earth's surface.
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