What Is an Oasis?
Many deserts are almost totally without water. Few plants can live in the dry, moving sands of these deserts. An oasis in the desert is a place where a natural spring,...
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Why Do Golf Balls Have Dimples?
Why Do Golf Balls Have Dimples? Most golf balls have between 300 to 500 dimples, though the pattern, depth, and number vary significantly between different...
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How Do Whales Sleep?
Whales don’t sleep at night as you do. They sleep by taking “half naps” at the water surface for a few minutes at a time when they are tired. Whales seem to be...
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What Do We Mean by a Water Table?
Not far below the surface of the land there is a zone where the soil is saturated (filled) with water. The topmost level of this saturated zone is called the water...
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Why Do Earthworms Come out When It Rains?
Why Do Earthworms Come out When It Rains? Earthworms come to the surface of the ground in heavy rains to avoid being drowned. Earthworms stay underground most of the...
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