How Were the First Mountains and Valleys Formed?
The first mountains and valleys were the crust formed as a result of the cooling of the molten mass of the earth. As the…
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Rock
What Is a Meteorite?
What Is a Meteorite? Meteorites begin as bodies of matter traveling at great speed through space. In the solar system there are numberless s
Where Does Salt Come From?
Salt comes from lakes, wells, underground mines, and from the sea. Most of the salt that we sprinkle on our food is mined from thick salt be
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
What Causes Earthquakes?
What Causes Earthquakes? Earthquakes happen when two large pieces of the Earth’s crust suddenly slip. This causes shock waves to shake the s