Shared Flashcard Set

Details

Gasior
Plate Techtonics
19
Science
7th Grade
02/19/2014

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Cards

Term
Continental Drift
Definition
It is the idea that the continents drifted to where the currently are from pangaea
Term
Who was The continental drift proposed by
Definition
Alfred Wagner
Term
what was the proof of the continental drift
Definition
Fossil, Climate, and Rock
Term
Fossil Clues
Definition
They were when similar plant and animal structures were found on both sides of the Atlantic
Term
Climate Clues
Definition
it was Glacial Evidence in a warmer climate and fossils of ferns were found in colder climates.
Term
What were Rock Clues
Definition
Similar Rock structures found on both sides of the atlantic
Term
What was seafloor spreading
Definition
It was when molten rock was pushed through the mid-Atlantic ridge
Term
Who was the Seafloor Spreading proposed by
Definition
Hess in the 1960's
Term
What was the proof of the Seafloor Spreading
Definition
Newer rocks were found near the Mid-Atlantic ridge, and Magnetic clues in rocks
Term
Plate tectonic theory
Definition
Where crustal section move around on the move
Term
How are the plates moved
Definition
By Convectional Currents
Term
Plate boundaries
Definition
Where the Plates meet
Term
What are the three types of Boundaries
Definition
Convergent, Divergent, Transform
Term
Convergent Boundaries
Definition
Where the plates come together, this also forms mountains
Term
What is subduction
Definition
where the plates go denser into less dense continental plates
Term
What is Divergent
Definition
Where the plates spread apart
Term
What is Seafloor Spreading
Definition
where two oceanic plates move apart
Term
What is a Rift Valley
Definition
Where two continental plates move apart
Term
What is Transform boundary
Definition
Where the plates slide by each other
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