What Causes Volcanoes?
What Causes Volcanoes? Volcanoes form when pressures within the earth force melted rock and gases upward through cracks in the surface. The earth’s crust is made...
Read MoreWhat Causes Volcanoes? Volcanoes form when pressures within the earth force melted rock and gases upward through cracks in the surface. The earth’s crust is made...
Read MoreWhy Do Stars Shine Only at Night? Though stars seem to disappear when daylight comes, there are really stars in the sky all day, and their light keeps streaming to...
Read MoreHow Does a Rocket Engine Work? You can make a simple rocket by filling a toy balloon with air and letting it go. Rockets work on the Newton’s principle that every...
Read MoreWhat Makes a Fire Smoke? The smoke that rises from a chimney or a bonfire is made chiefly of gases that are produced when the fuel burns. Most of the gases in wood...
Read MoreWhere Does the Sun Get Its Energy From? Solar energy comes from the energy of atoms that are constantly changing into different forms. The sun looks like a great ball...
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