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Flashcards in Geology and Oceanography Deck (7)
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1

Plate tectonics

Make up upper crust of Earth and float on upper mantle. Move 8-10 cm per yr.

2

Plate movements
A) convergent
B) divergent
C) subduction
D) strike slip

A) move together
B) move apart
C) move under. Causes volcanoes, trenches, mountains
D) move opposite directions

3

Where does spreading occur?

Mid ocean ridges, ocean floor

4

5 major oceans

Pacific
Atlantic
Arctic
Indian
Antarctic

5

What is the coriolis effect?

Deflection of ocean currents to the right in the north hemisphere, causes gyrers

6

What are gyrers?

Areas with low water movement in the middle of large circular currents

7

What happens during El Niño?

Winds/currents relax towards West and causes a counter current.

East coast experiences drought, upwelling, new species, storms