Why Do Some Elephants Have Very Large Ears?
Why Do Some Elephants Have Very Large Ears? African elephants have larger ears than Indian, or Asiatic, elephants because they live in hotter conditions and are bigger...
Read MoreWhy Do Some Elephants Have Very Large Ears? African elephants have larger ears than Indian, or Asiatic, elephants because they live in hotter conditions and are bigger...
Read MoreDoes a Falling Tree Makes Noise? If a Tree Falls in a Forest and No One Hears It, Does It Make a Noise? The answer to this famous riddle depends on how we define sound....
Read MoreWhat Causes Sounds? All sounds are made by vibrations. Lightly place your fingers on your throat, and speak. The buzz you feel is your vocal cords vibrating. Stretch a...
Read MoreWhat Makes an Echo? An echo is a sound that we hear after it is reflected, or bounced back, from some object. When we shout, sound waves travel through the air in all...
Read MoreHow Do Bats Fly in the Dark? A bat can fly in total darkness and yet never bump into anything. The bat has a built-in radar system. As it flies through the dark, it...
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