Ocean Floor Flashcards

1
Q

Sediments separating continental slope from the ocean floor

A

Continental rise

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2
Q

Deep V- shaped valleys cut through continental shelf and continental slope

A

Submarine canyon

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3
Q

Area where continent’s underwater edge meets the ocean floor and consists of three parts; the shelf, the slope, and the rise

A

Continental margin

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4
Q

Water that carries large amounts of sediment

A

Turbidity currents

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5
Q

Boundary between continent’s crust and ocean floor’s crust

A

Continental slope

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6
Q

A description of the shape of the ocean floor - its characteristics and major features

A

Topography

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7
Q

The boundary where land meets the ocean

A

Shoreline

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8
Q

Small pieces of rocks and remains of plants and animals washed down from the continent

A

Sediments

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9
Q

Relatively flat part of the continental margin covered by shallow ocean water

A

Continental shelf

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10
Q

Flat large area on the ocean floor

A

Abyssal plains

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11
Q

Individual underwater mountains that rise up from the ocean floor and are characterized by steep sides and narrow tops ( summits)

A

Seamounts

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12
Q

Individual underwater mountains that rise up from the ocean floor, but are flat- topped and do not have summits

A

Guyots

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13
Q

Long narrow crevices found along the edge of the ocean floor

A

Trenches

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14
Q

Large, underwater mountain ranges formed by molten material deep within the Earth

A

Midocean ridges

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15
Q

Running along the middle and almost parallel to underwater mountain ranges are deep crevices about a mile wide

A

Rift valleys

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16
Q

Sometimes unusual- looking volcanic islands can be seen tropical waters near a continental shelf. Surrounding these islands offshore are are large masses masses of limestone rocks that contain the shells of animals. These structures can only be found in warm, tropical waters near the surface, because it needs light.

A

Reefs

17
Q

Limestone structures that surround a tropical island, but is separated from the island by a lagoon

A

Barrier reefs

18
Q

Limestone structures that surround a tropical island, that touch the islands shoreline

A

Fringing reefs

19
Q

Limestone structures that surround what used to be a tropical island, but the island has since sunken or has been eroded away

A

Atoll

20
Q

Resources that can be found in a continental shelf area

A

Large deposits of minerals

Oil

Natural gas

Many fish and seashells

21
Q

Name given to currents that flow down a continental slope carrying sediments and remains of plants and animals

A

Turbidity currents