Plate Boundaries Flashcards Preview

Geography 12 Tectonic Plates > Plate Boundaries > Flashcards

Flashcards in Plate Boundaries Deck (7)
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1

Divergence

Mid ocean ridges
Shield volcanoes
Rifts

2

Convection currents

Hotter things rise
Cooler things sink
Makes a full circle around

3

Converging collision

Equal density crust
Folding/faulting
Himalayas, Rockies, alps

4

Subduction: ocean-continent

Oceanic crust goes down
Composite volcanoes
Deep focus (300-700km)
Japan, cascades, pacific

5

Subduction: ocean vs ocean

Island arcs
Equal density
Tsunamis
Philippines, Tonga islands

6

Transform plate boundaries: strike slip

Earthquakes (Shallow focus)
San Andreas fault
Mid Atlantic ridge

7

Hotspot

Super heated area of mantle.
Continuous eruptions
Shield volcanoes