The Big One

What are some extreme forces of nature? Have you ever seen examples of them on TV or experienced them in person? A low-pressure closure occurs when an area of low-pressure air is surrounded by higher-pressure air. Any storm with a low pressure closure that causes a circular pattern of winds to form is called a cyclone. Hurricanes and tornadoes both have low-pressure closures and spinning winds. They are types of cyclones. How do hurricanes and tornadoes differ?

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