10 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 did the Glomar Challenger ship do?
Traveled across the Atlantic Ocean drilling core samples into the sea floor
How do tectonic plates move?
Push together, pull apart, or slide past each other
What was the main task of the Deep Sea Drilling Project (DSDP)?
To drill down into the ocean floor and extract samples of the ocean sediments and underlying oceanic crust
What is the Mid-Atlantic Ridge?
An underwater mountain range in the Atlantic Ocean
What is the main cause of the creation of the oceanic ridge system?
Seafloor spreading due to upwelling of magma through diverging tectonic plates
Why were some scientists perplexed about the idea of the Mid-Atlantic Ridge being a tectonic plate boundary?
They found it hard to believe that magma could ooze up through a crack in the earth's crust
What did the samples taken from the ridge system show about the rocks and sediment near the ridge crest?
Rocks near the crest were very young and sediment thickness increased farther away from the crest
What did the samples taken from the ridge system provide strong evidence for?
The earth's crust being made up of moving tectonic plates
Explore the theory of plate tectonics and how the earth's crust is broken into plates that float on the fluid layer below. Learn about the movement of tectonic plates and how they interact with each other.
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