Thunder and Lightning

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Thunder and Lightning

Thunder and Lightning


Lightning forms when opposite charges attract and like charges repel. Negatively charged bottoms of cumulonimbus clouds attract positively charged areas or objects on the ground, as the attraction builds a connection can be made and the current will flow.

How does it form?

Thunder forms from the rapid heating of the air around the lightning bolt.

Things to avoid during thunder and lightning storms

Lightning travels at the speed of light, so it is seen almost instantly.

Thunder travels at the speed of sound, so it takes longer to hear it.

Causes an adverage of about 200 deaths per year

If you can hear thunder, you are within 10 miles of a storm and can be struck by lightning.

To judge how close lightning is, count the seconds between the flash and the thunderclap. Each second represents about 300 meters.

Most lightning occurs over land rather than oceans.

A typical storm containing thunder and lightning is about 15 miles in diameter.

Lightning strikes usually last around 1 or 2 microseconds.

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By Lauren Staub and Hope Walborn Period 2


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