What Makes a Ship Float?
What Makes a Ship Float? A small steel ball dropped into water sinks immediately. A ship weighs thousands of tons, yet it floats on the ocean’s surface. A ship...
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How Do Clouds Move in the Sky?
How Do Clouds Move in the Sky? Clouds are formed when water evaporates from rivers, ponds, oceans, and lakes. The tiny droplets of water cling to particles like (dust,...
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Why Do We Have Saliva in Our Mouths?
Why Do We Have Saliva in Our Mouths? When you take a bite of food, a watery fluid called “saliva” pours into your mouth. In fact, just looking at or...
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What Is Cement Made From?
What Is Cement Made From? Cement is made from a mixture of lime, clay, silica, iron and aluminum minerals. Limestone is the most important source for the calcium, while...
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Why Does an Ice Cube Float?
Why Does an Ice Cube Float? Ice cube floats because it is lighter than water. When water freezes, it increases its volume (expands) by about one-tenth. When 10 quarts...
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