Water and Ice
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17
What Can Cause Severe Flooding?
How do massive floods happen?
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72
What Makes It Rain?
And what causes snow, hail, and ice rain?
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97
Keeping a watchful eye on dangerous ice
What does the chief scientist for the National Ice Center do?
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109
How Do Snowflakes Form?
How does water form such intricate designs up there in the clouds?
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127
The California Drought
It’s the worst drought in 1,200 years, so what do we do?
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128
Grow Snow Crystals
See how temperature affects the shape of snowflakes.
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140
Precipitation Simulator
Can you make it rain, snow, and hail? Try it out!
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181
What Is an Ice Jam?
As winter melts away, chunks of ice can jam up rivers and cause flooding.
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194
What Is Precipitation?
This infographic will teach you about precipitation!
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195
What Causes a Flood?
How do atmospheric conditions and an area’s geography cause a flood?
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196
What Causes a Drought?
Droughts are caused by unusually dry weather — but they don't just happen in dry places, like deserts. Find out why.