Why Do Frogs Croak?
Why Do Frogs Croak? In most species of the frogs only the males croak. The male frog croaks in order to attract the female frog during the mating season. When a frog is...
Read MoreWhy Do Frogs Croak? In most species of the frogs only the males croak. The male frog croaks in order to attract the female frog during the mating season. When a frog is...
Read MoreWhich Is the World’s Largest Lake? Imagine a lake almost as big as the entire state of California. That’s the size of the Caspian Sea. It is the largest lake in...
Read MoreHow Is Sound Produced? Sounds travel in waves. If you throw a pebble into a still pond, you will see ripples, or waves, spread outward from the point where the pebble...
Read MoreWhat 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...
Read MoreWhy 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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