March 25, 2017
Tornadoes and twisters Tornado and twister are different names for the same type of storm—a violently rotating column of air over land associated with a severe thunderstorm. Tornadoes range in diameter from metres to hundreds of metres and generally last from a few seconds up to half an hour. They have an intense updraught near […]
March 24, 2017
Earth earth is soil. Earth is a planet. Capital letters matter. Earth spin – 24 hours – Day/Night cycle Earth spins in a counterclockwise direction. For an outside observer the Earth spins left-to-right or west-to-east along its rotational axis. This is why for an observer on the surface the (stationary) sun and the night sky […]
March 10, 2010
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