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Geography 12 Tectonic Plates > Tectonic Exercise > Flashcards

Flashcards in Tectonic Exercise Deck (7)
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1

Ocean basins vs continents

Ocean basins: older denser basalts
Continents: younger les dense basalts

2

Upper part of mantle

Lithosphere

3

What makes plates move?

Convection currents in the asthenosphere

4

Theory of Isostasy

Lighter the continental mass the more they will float/rise

5

Supercontinent

Pangea

6

Continental drift

How Pangea separated

7

How much are plates moving

2-3cm a year