Geology and Oceanography Flashcards
1
Q
Plate tectonics
A
Make up upper crust of Earth and float on upper mantle. Move 8-10 cm per yr.
2
Q
Plate movements A) convergent B) divergent C) subduction D) strike slip
A
A) move together
B) move apart
C) move under. Causes volcanoes, trenches, mountains
D) move opposite directions
3
Q
Where does spreading occur?
A
Mid ocean ridges, ocean floor
4
Q
5 major oceans
A
Pacific Atlantic Arctic Indian Antarctic
5
Q
What is the coriolis effect?
A
Deflection of ocean currents to the right in the north hemisphere, causes gyrers
6
Q
What are gyrers?
A
Areas with low water movement in the middle of large circular currents
7
Q
What happens during El Niño?
A
Winds/currents relax towards West and causes a counter current.
East coast experiences drought, upwelling, new species, storms
