Ocean Freezing Point Flashcards

0
Q

T/F water with higher than average salt content freeze at lower temperatures than 28 degrees Fahrenheit

A

True

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1
Q

What degree Fahrenheit does ocean water with an average salt content freeze at?

A

28 degrees Fahrenheit

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2
Q

How much saltier is the Dead Sea than average? What is its freezing point?

A

9 times saltier than average, freezes at -18 degrees Fahrenheit

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3
Q

What happens when ocean/sea water freezes?

A

Salt isn’t included in ice so frozen water becomes fresh water

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4
Q

What is the melting point of sea ice?

A

32 degrees Fahrenheit because sea water becomes fresh water

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5
Q

What happens when fresh water ice continues to be created?

A

It makes the ocean water below it slightly saltier and thus harder to freeze.

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6
Q

What are the two major forms of ice in the oceans?

A

Sea ice

Icebergs

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7
Q

What are some characteristics of sea ice?

A

Saw ice forms from sea water, moderately thin (5 to 30 feet) and relatively brittle

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8
Q

What are some of the characteristics of icebergs?

A

They form from glacial ice, which forms from compacted snow. More common near coastal waters. More massive and structurally strong than sea ice.

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9
Q

What are the two types of icebergs? Which is the largest?

A

Pinnacle iceberg common in northern hemisphere

Tabular iceberg largest common in southern ocean

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