Water at 4°C that slightly decreases in temperature

A. contracts.
B. expands.
C. neither of these
D. none of the above


Answer: B

Environmental & Atmospheric Sciences

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Between a cold front and a warm front, we find

A) a cold air mass. B) a dry air mass. C) a warm, moist, and unstable air mass. D) a very stable air mass.

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Friction in fluid is termed ____________________

Fill in the blank(s) with correct word

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The earliest astronomical records appear to have been made by the ancient Chinese, Egyptians, and Babylonians in order to ________

A) predict future positions of celestial objects to identify good or "lucky" dates for various important events B) predict the best dates for traveling, particularly by boat, and where to build temples C) determine when to plant crops or hunt animals based on seasonal changes D) determine who should be sacrificed or promoted based on heavenly signs at their birth

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