Why Are There Colors?
Why Are There Colors? Sunlight may appear to be white, but it is actually a mixture of all the colors that can be seen in a rainbow – red, orange, yellow, green,...
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Why Does Swiss Cheese Have Holes?
Why Does Swiss Cheese Have Holes? Like all cheeses, Swiss cheese is made by separating the solid part of milk (or curd) from the watery part, and pressing the curd into...
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Do Fish Sleep?
Yes, fish do sleep. Because they have no eyelids, they cannot close their eyes, and it may look as though they never sleep. Many fish sleep by simply remaining very...
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How Do You See?
How Do You See? You see because waves of light strike objects around you and bounce back to your eyes. The light passes through the pupil of the eye and forms a picture...
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Why Do We Blink Our Eyes?
Why do we blink our eyes? Blinking keeps our eyes clean and healthy. Our eyes are constantly being washed by the salty fluid known as tears. Tears come from glands that...
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