Movies of Early America: Primary Source
Material from 18th Century America
Sunday, April 25, 2010
Saturday, April 24, 2010
What are tornadoes?
What are tornadoes?
Tornadoes are nature’s most violent storms;
having destructive winds in excess of 250 mph
they can destroy anything in their path. The
wind speed of the tornado determines how the
tornado is rated on the Fujita scale or EF scale.
Tornadoes are nature’s most violent storms;
having destructive winds in excess of 250 mph
they can destroy anything in their path. The
wind speed of the tornado determines how the
tornado is rated on the Fujita scale or EF scale.
Friday, April 23, 2010
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