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Where do tornadoes come from? – Weather – Earth science

By |2018-05-31T11:49:23-07:00August 20th, 2017|Physics|

A tornado wrecked a town in northern France When there's wind coming from more than one direction at the same time, sometimes the air begins to spin around in one place. This is especially likely when a hot, wet wind coming from the south hits a cold, dry wind coming from the north. Both winds [...]

What causes wind (Hot air rises) – Wind and weather Science

By |2018-09-19T08:16:28-07:00August 20th, 2017|Physics|

Hot air balloon - hot air rising is what causes wind Hot air is lighter than cold air When something is hot, its molecules are farther apart than when it is cold. When air is hot, its molecules are further apart, so it takes up more room. That makes hot air lighter than cold air, because the [...]

Tornado in a bottle – Weather science project

By |2018-05-31T11:49:19-07:00August 20th, 2017|History, Physics|

A tornado in a bottle You can make your own tornado to see how it works. Fill a one or two liter bottle, like a soda bottle, with water. Add a bunch of glitter to help you see the tornado more clearly. Put the top on the bottle. Now swish the bottle around a bunch to [...]