Flashcards in The theory of plate tectonics (unit 3 Deck (10):
He was a Canadian scientist that proposed the lithosphere is broken into separate sections called plates (1965)
Plates float on top of the ______?
-Plates float on top of the Asthenosphere
-Convection currents rise in the asthenosphere and spread out beneath the Lithosphere
-Convection currents cause plates to move, producing changes in Earth's surface
-Changes in Earth's surface include volcanoes, mountain ranges, and deep ocean trenches
Tuzo Wilson's Theory highlights (1965)
Place where two plates slip past each other, moving in opposite directions. This also causes frequent earthquakes.
Two plates move apart or diverge; usually, occur at the mid-ocean ridge
occurs when a deep valley is formed along a divergent boundary that develops on land.
Place where two plates come together or converge, causing collision
When two oceanic crust collide, or when an oceanic plate collides with a continental plate, one plate is subducted beneath the other forming a trench
Convergent boundary (oceanic-to-continental)
When two continental plates collide they form mountains
Convergent boundary (continental-to-continental)