Shared Flashcard Set

Details

Joseph
plate tectnics
23
Science
7th Grade
02/19/2014

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Cards

Term
Continental drift
Definition
continents drifted to current location (From Pangaea)
Term
Problems with theory
Definition
No proof
Term
Problems with theory
Definition
No explanation how it happened
Term
Fossil clues
Definition
similar plant and animal fossils found on both sides of the Atlantic Ocean
Term
Climate clues
Definition
Glacial evidence in warmer climates
Term
Climate clues
Definition
Fossils of ferns in cold climates
Term
Rock clues
Definition
similar rock types found on both sides of the Atlantic Ocean
Term
Seafloor spreading
Definition
molten rock pushed thru at mid-Atlantic Ridge
Term
Proof
Definition
Newer rocks near mid-Atlantic ridge
Term
Proof
Definition
Magnetic clues in rocks
Term
Plate Tectonics theory
Definition
crustal sections (plates) move around on mantle
Term
Plate boundaries
Definition
where plates meet
Term
Convergent
Definition
plates come together
Term
Continental collision
Definition
- two continental (less dense) plates collide (ex.- India & Asia)
Term
Seduction
Definition
denser oceanic plate goes under less dense continental plate (ex.- California coast)
Term
Divergent
Definition
plates spread apart
Term
Seafloor spreading
Definition
two oceanic plates move apart
Term
Rift valley
Definition
- two continental plates move apart
Term
Transform
Definition
- plates slide by each other
Term
ex. of transform
Definition
-ex. – San Andreas fault (California)
Term
rift valley ex
Definition
(ex.- mid-Atlantic ridge)
Term
Definition
(ex.- mid-Atlantic ridge)
Term
seduction ex
Definition
(ex.- California coast)
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