What Is Muscle?
What Is Muscle? Muscle is the body tissue which, because it has the power of contraction, enables the higher animals to move their bodies. M
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Why Do Penguins Have Small, Stiff Wings?
Why Do Penguins Have Small, Stiff Wings? A penguin wing is called a flipper. It is a hard, rigid paddle covered with tiny stiff feathers tha
How Do Sailfish Move so Quickly?
How Do Sailfish Move so Quickly? Sailfish are highly prized game fish, and are known for their incredible jumps and great speed. They can sw
How Can You Tell How Far Away Lightning Is?
How Can You Tell How Far Away Lightning Is? You can tell how far away lightning is by counting the seconds between the lightning flash and t
What Causes Sounds?
What Causes Sounds? All sounds are made by vibrations. Lightly place your fingers on your throat, and speak. The buzz you feel is your vocal