Under what conditions will the firn limit remain the same from year to year? Under what conditions
will it change? What happens if the firn limit moves upward year after year? What will be an ideal response?
The firn limit will remain the same if accumulation equals wastage. The firn limit will move up the
glacier if more snow is lost than accumulated in a year, and will move down the glacier if more snow
is accumulated than lost in a year. Eventually, a negative budget will result in a glacier becoming too
thin to maintain flow. It will be a stagnant glacier and eventually disappear.
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____________________ are harmful chemicals emitted directly into the air from natural processes and human activities
Fill in the blanks with correct word
When liquid water gets below 4°C, it ____
A) ?forms a gas by breaking all of its hydrogen bonds B) ?behaves like all other liquids and increases in density C) ?begins to decrease in density by expanding D) ?compresses its molecular structure and becomes more saline
A mid-winter, mid-latitude cyclone that reaches the West Coast is least likely to
A) have formed near Japan. B) bring rain to coastal Oregon. C) bring snow to the mountains of Washington. D) head north when reaching the Rocky Mountains.
How could the modification of the Amazon Rainforest by humans influence climate change?
What will be the ideal response?