How Do Chameleons Change Color?
How Do Chameleons Change Color? The chameleon is famous for changing color. Some can change from green to brown, or to red or yellow. This little lizard can change...
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How Do Mirrors Work?
How Do Mirrors Work? Most mirrors are made of a sheet of polished glass with a thin coat of silver paint on the back. The silver backing reflects the light that falls...
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What Happens to a Lost Balloon?
What Happens to a Lost Balloon? The toy balloon sold at fairs that tugs on the end of a string is filled with a gas that is much lighter than the air around it. If you...
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What Is a Light-year?
What Is a Light-year? Space is so vast that scientists don’t use miles to measure how far stars are away from us. The number of miles would be too large to work...
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How Does a Prism Produce Colors?
How Does a Prism Produce Colors? A prism is a piece of glass or other see-through material that has several flat sides, called faces. Many prisms have three long faces...
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