Ocean Freezing Point Flashcards
T/F water with higher than average salt content freeze at lower temperatures than 28 degrees Fahrenheit
True
What degree Fahrenheit does ocean water with an average salt content freeze at?
28 degrees Fahrenheit
How much saltier is the Dead Sea than average? What is its freezing point?
9 times saltier than average, freezes at -18 degrees Fahrenheit
What happens when ocean/sea water freezes?
Salt isn’t included in ice so frozen water becomes fresh water
What is the melting point of sea ice?
32 degrees Fahrenheit because sea water becomes fresh water
What happens when fresh water ice continues to be created?
It makes the ocean water below it slightly saltier and thus harder to freeze.
What are the two major forms of ice in the oceans?
Sea ice
Icebergs
What are some characteristics of sea ice?
Saw ice forms from sea water, moderately thin (5 to 30 feet) and relatively brittle
What are some of the characteristics of icebergs?
They form from glacial ice, which forms from compacted snow. More common near coastal waters. More massive and structurally strong than sea ice.
What are the two types of icebergs? Which is the largest?
Pinnacle iceberg common in northern hemisphere
Tabular iceberg largest common in southern ocean