Page 119 - SB_G2.3_M5-6_Flip
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“It’s a funnel of wind that forms in the sky and
wrecks what it touches on the ground,” Chuck said.
“Tornadoes form during a thunderstorm. They are
more likely to occur over flat land.”
“But how?”
Sonny asked.
“When the wind in a storm changes
direction, increases speed, and rises, it
makes the air below it spin. Rising air
pushes the spinning column of air downward
until it’s vertical. The spinning funnel of air
speeds up, forming a tornado.”
Tornadoes are usually determined to be weak, strong,
or violent. The violent ones can have winds in excess of
200 miles (322 kilometers) per hour. They can destroy
homes. Only 2 percent of tornadoes are violent.
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