The theory of plate tectonics (unit 3 Flashcards Preview

Science > The theory of plate tectonics (unit 3 > Flashcards

Flashcards in The theory of plate tectonics (unit 3 Deck (10):
1

He was a Canadian scientist that proposed the lithosphere is broken into separate sections called plates (1965)

Tuzo Wilson

2

Plates float on top of the ______?

asthensphere

3

-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)

4

Place where two plates slip past each other, moving in opposite directions. This also causes frequent earthquakes.

transform boundary

5

Two plates move apart or diverge; usually, occur at the mid-ocean ridge

Divergent boundary

6

occurs when a deep valley is formed along a divergent boundary that develops on land.

Rift valley

7

Place where two plates come together or converge, causing collision

Convergent boundary

8

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)

9

When two continental plates collide they form mountains

Convergent boundary (continental-to-continental)

10

What are the three types of plate boundaries

Transform, Divergent and Convergent