What Causes Thunder?
What Causes Thunder? Thunder is caused by lightning. During a thunderstorm, electrical charges build up in the clouds. When a charge becomes strong enough, there is a...
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What Is the Milky Way?
On a clear night you can see a pale white path of light that stretches across the sky. It is what we call the Milky Way. It is the light from the billions of stars that...
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Why Is the Sky Blue?
The daytime sky is blue because of what happens to sunlight as it enters the Earth’s atmosphere. When the Sun is low near the horizon as it rises or sets, the...
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What Causes Rainbows?
What Causes Rainbows? When the sun is out during or right after a shower, a rainbow appears in the sky. When sunlight strikes the drops of water in the air, the...
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What Causes a Rainbow?
What Causes a Rainbow? After a shower of rain there is often a rainbow. Rainbows form when the sun begins to shine through the clouds while the air is still filled with...
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