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6 Cards in this Set
- Front
- Back
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A storm is a violent disturbance in the atmosphere. Storms involve sudden changes in air pressure, which in turn cause rapid air movements. Conditions that bring one kind of storm often cause other kinds of storms in the same area. For example, the conditions that cause thunderstorms can also cause tornadoes. There are several types of severe storms.
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Storm
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A thunderstorm is a small storm often accompanied by heavy precipitation and frequent thunder and lightning. Thunderstorms form in large cumulonimbus clouds, also known as thunderheads. Most cumulonimbus clouds form on hot, humid afternoons.
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Thunderstorm
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During a thunderstorm, areas of positive and negative electrical charges build up in the storm clouds. Lightning is a sudden spark, or electrical discharge, as these charges jump between parts of a cloud, between nearby clouds, or between a cloud and the ground. Lightning is similar to the shocks you sometimes feel when you touch a metal object on a very dry day, but on a much larger scale.
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Lightning
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A tornado is one of the most frightening and destructive types of storms. A tornado is a rapidly whirling, funnel-shaped cloud that reaches down from a storm cloud to touch Earth’s surface. If a tornado occurs over a lake or ocean, the storm is known as a waterspout.
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Tornado
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A hurricane is a tropical cyclone that has winds of 119 kilometers per hour or higher. A typical hurricane is about 600 kilometers across. Hurricanes form in the Atlantic, Pacific, and Indian oceans. In the western Pacific Ocean, hurricanes are called typhoons.
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Hurricane
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A “dome” of water that sweeps across the coast where a hurricane lands.
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Storm Surge
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