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Earth Science > Oceanography > Flashcards

Oceanography Flashcards

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0
Q

Dissolved oxygen

A

Composition

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1
Q

What is the study of the earth’s oceans?

A

Oceanography

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2
Q

Dissolved sea in seawater

A

Salinity

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3
Q

Ocean’s color?

A

Transparent and Colorless

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4
Q

Ocean’s shades?

A

Blue

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5
Q

What color passes through and which ones are absorbed?

A

Blue passes through; other colors are absorbed

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6
Q

Varies widely with latitude

A

Surface temperature

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7
Q

Varies with depth

A

Temperature

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8
Q

Boundary where cold, deep water melt in the sun-warmed water nearer the surface

A

Thermocline

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9
Q

More salt; higher density

A

Salinity

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10
Q

Cold water is denser

A

Temperature

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11
Q

Which one goes up?

A

Hot

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12
Q

Which one goes down?

A

Cold

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13
Q

which one is more rapid, water or air pressure?

A

Water Pressure

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14
Q

Deepest point in the ocean

A

Hydrostatic Pressure

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15
Q

Has more pressure

A

Lowest part

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16
Q

Frozen seawater

A

Sea ice

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17
Q

Is sea ice salty

A

No

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18
Q

Extremely salty

A

Brine

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19
Q

Huge chunks of glacier

A

Icebergs

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20
Q

Outer edge of a glacier

A

Ice shelf

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21
Q

Covers an area the size of France

A

Ross ice shelf

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22
Q

Why do icebergs float?

A

Because they are less dense

23
Q

Large streams of ocean water that FLOW AS A UNIT

A

Ocean Currents

24
Q

Large masses of water that FLOW HORIZONTALLY

A

Surface currents

25
Q

Circular movements

A

Gyre

26
Q

Warm surface currents

A

Gulf Streams

27
Q

Cold surface current

A

Peru current

28
Q

Flow beneath the surface

A

Subsurface current

29
Q

Differences in density

A

Density current

30
Q

Mud or silt is mixed with seawater

A

Turbidity Current

31
Q

Deeper, colder water forming an upward-flowing current

A

Upwellings

32
Q

Rich in nutruents

A

Upwellings

33
Q

Current that flows in the opposite direction

A

Countercurrents

34
Q

Rhythmic back and forth motions of water

A

Waves

35
Q

Highest point of a wave

A

Crest

36
Q

Lowest point

A

Trough

37
Q

Length of time of waves

A

Period

38
Q

Different wave directions

A

Choppy

39
Q

White foamy crests

A

Whitecaps

40
Q

Gentle rolling waves that may appear during calm weather

A

Ocean swells

41
Q

Waves that break or topples

A

Breaker

42
Q

Foaming water that wash up in to the beach

A

Surf

43
Q

Wash sand from beneath the swimmer’s feet

A

Undertow

44
Q

Current outflowing water trapped near the BEACH

A

Longshore current

45
Q

Dangerous surface current

A

Rip current

46
Q

Gigantic waves

A

Tsunamis

47
Q

Most regular and predictable movements of water

A

Tides

48
Q

Highest ocean level

A

High tide

49
Q

Lowest ocean level

A

Low tide

50
Q

One high tide; one low tide each day

A

Diurnal tide

51
Q

Both high tides rise to the same level and both low tides fall to the same level

A

Semidiurnal tide

52
Q

High tide is higher than the other one; Low tide id lower than the other one.

A

Mixed semidiurnal

53
Q

Higher than normal at high tide and lower than normal at low tide

A

Spring Tide

54
Q

New moon; Full moon

A

Spring tide

55
Q

Moon and sun are at a right angle

A

Neap tide

Earth Science (1 decks)

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