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Flashcards in Margins Deck (8)
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1

Where are dense oceanic plates formed, destroyed and why? (Margins tectonics)

•formed = ocean ridges
•destroyed = ocean trenches
•there is a balance between the rate of creating and destroying - meeting an equilibrium

2

What way do constructive plates move and what happens? (Margins tectonics)

Away from each other and new crust is made

3

What way do destructive plates move and what happens? (Margins tectonics)

Towards each other and crust is destroyed

4

What way do conservative plates move and what happens? (Margins tectonics)

Past each other where no crust is formed or destroyed

5

Where is there a constructive plate boundary? (Margins tectonics)

Between African and South American plates

6

Where is there a destructive plate boundary? (Margins tectonics)

Between the Nazca and South American plates

7

Where is there a conservative plate boundary? (Margins tectonics)

Between the Pacific and North American plates

8

Each plate is part of ... Floating on the ... (Margins tectonics)

Lithosphere
Asthenosphere