Ocean Flashcards

1
Q

Pacific Ocean

A

The Pacific Ocean is the largest and deepest of Earth’s oceanic divisions.

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2
Q

Atlantic Ocean

A

The Atlantic Ocean is the second largest of the world’s oceans, with an area of about 106,460,000 square kilometers.

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3
Q

Indian Ocean

A

The Indian Ocean is the third-largest of the world’s oceanic divisions, covering 70,560,000 km² or 19.8% of the water on the Earth’s surface.

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4
Q

Arctic Ocean

A

The Arctic Ocean is the smallest and shallowest of the world’s five major oceans.

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5
Q

Southern Ocean

A

The Southern Ocean, also known as the Antarctic Ocean or the Austral Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60° S latitude and encircling Antarctica.

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6
Q

Salinity

A

A measure of the amount of dissolved salts in a given amount of liquid

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7
Q

Surface Ocean

A

The surface layer of the ocean

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8
Q

Thermocline

A

a steep temperature gradient in a body of water such as a lake, marked by a layer above and below which the water is at different temperatures.

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9
Q

Deep zone

A

The deep zone ocean is a zone of the world’s oceans occupying intermediate position between the abyssal region and the sea bed.

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10
Q

Water cycle

A

The Continuous movement of water from the ocean to the atmosphere to the land and back to the ocean

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11
Q

Evaporation

A

the process of turning from liquid into vapor.

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12
Q

Condensation

A

water which collects as droplets on a cold surface when humid air is in contact with it.

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13
Q

Precipitation

A

rain, snow, sleet, or hail that falls to the ground.

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14
Q

Continental shelf

A

The gently sloping section of the Continental margin located between the shoreline in the continental slope

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15
Q

Continental slope

A

This deeply inclined section of the Continental margin located between the continental rise in the continental shelf

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16
Q

Continental rise

A

The gently sloping section of the Continental margin located between the continental slope in the abyssal plain

17
Q

Abyssal plain

A

A large flat almost level area of the deep ocean basin

18
Q

Mid-Ocean ridge

A

A long undersea mountain chain that forms along the floor of the major oceans

19
Q

Rift Valley

A

A long narrow valley that forms as tectonic plates separate

20
Q

Seamount

A

a submerged mountain on the ocean-floor that is at least 1,000 M high and that has a volcanic origin

21
Q

Ocean trench

A

A steep and long depression in the deep-sea floor that runs parallel to a chain of Volcanic islands or a continental margin

22
Q

Plankton

A

The mass of mostly microscopic organisms that float or drift freely in freshwater and marine environments

23
Q

Nekton

A

All organisms that swim actively in open water , independent of currents

24
Q

Benthos

A

The organisms that live at the bottom of the sea or ocean

25
Q

Desalination

A

A process of removing salt from ocean water