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760 questions in 76 tests. Each test contains 10 questions.
Idiom of the Day
go like clockwork
to progress in a regular and dependable way
Everything was going like clockwork when suddenly the lights went out.
Rules to play Kickball
Tips to Remove Pimples on Face
Never seen Water Like This
101 Interesting Body Realities
Water and Weather
Temperature and Heat
About four times as much heat is required to heat a given quantity of water one degree as to heat an equal quantity of earth. In summer, when the rocks and the sand along the shore are burning hot, the ocean and lakes are pleasantly cool, although the amount of heat present in the water is as great as that present in the earth. In winter, long after the rocks and sand have given out their heat and have become cold, the water continues to give out the vast store of heat accumulated during the summer. This explains why lands situated on or near large bodies of water usually have less variation in temperature than inland regions. In the summer the water cools the region; in the winter, on the contrary, the water heats the region, and hence extremes of temperature are practically unknown.