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Oceans > Oceans > Flashcards

Oceans Flashcards

0
Q

Salinity

A

Measure of the mass of dissolved salts in a mass of water

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1
Q

Basin

A

Area of subsidence, region if low elevation

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2
Q

Salts

A

Five elements, compound account for 99% of seawater! chlorine, sodium, sulfate, magnesium, calcium, potassium, other- found in seawater

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3
Q

Surface current

A

Wind-driven current. Fast. Carry water horizontally, prevailing winds influence current formation

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4
Q

Density currents

A

Move water down and up, current moves towards polar area, water cools. Seawater freezes, and the salt in it is left to sink cause of density. Upwelling later brings it to surface

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5
Q

Upwelling

A

Vertical movement of water towards oceans. Water forced to surface after wind slowly pushes top water away. Takes 1000 yrs to get to equator. Brings nutrients up

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6
Q

Wave

A

Water moves in wave motion. Caused by wind.

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7
Q

Crest

A

Top

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8
Q

Trough

A

Bottom

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9
Q

Wavelength

A

Horizontal distance from crest to crest and trough to trough

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10
Q

Wave height

A

Distance vertically from crest to trough

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11
Q

Breaker

A

When wave base cannot support crest, and it collapses

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12
Q

Tide

A

Periodic rise and fall of the oceans surface caused by the gravitational force between Earth and the Moon, and between Earth and the sun

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13
Q

Tidal range

A

Difference in water level between a high tide and a Lowtide

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14
Q

Spring Tide

A

This is the greatest title range which occurs when Earth, the moon, and sun form a straight line

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15
Q

Neap tide

A

Lois title range, occurs when earth, moon, and sun form a right angle

16
Q

Tsunami

A

A wave that forms when an ocean disturbance suddenly moves a large volume of water

17
Q

Sea level

A

How high the sea is on the coast. Average level of ocean surface

18
Q

Gyre

A

Circular system of currents

Oceans (1 decks)

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