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D - Science - Unit 7

Chapter - Storms

What forms when lightning strikes sand or sandy soil? fulgurites
How does a thunderstorms and tornados form? when warm, humid air rises rapidly within a cumulonimbus cloud
When do many thunderstorms form? hot, humid afternoons and when warm air is forced upward along a cold front
Where do many thunderstorms form? in the spring and summer in southern states or on the Western Plains
What causes thunder? a lightening bolt rapidly heats the air, which causes it to expands suddenly & explosively causing the sound of an explosion
Why do you see lightening before you hear thunder? light travels much faster than sound
What kind of damage can thunderstorms cause? heavy rains flood low-lying areas, lightening strikes that shatter tree trunks or start forest fires, and lightening hitting and killing people
What could be a benefit from having a flood? they can provide rich new soil for agriculture
Where is the safest place to be during a thunderstorm? indoors
What should you avoid during a thunderstorm? standing under trees, going places where lightening may strike & touching objects that can conduct electricity
What is one of the most frightening and destructive types of storms? tornado
What is a tornado that forms over a lake or ocean called? waterspout
When do many tornadoes form? in the spring and early summer, late in the afternoon when the ground is warm
What type of weather pattern is likely to create tornadoes? a warm, humid air mass moves North from the Gulf of Mexico into the lower Great Plains, while a dry, cool air mass moves South from Canada
Where is tornado alley? the Great Plains
Where is the safest place to be during a tornado? a storm shelter or the basement of a well-built building
What should you stay away from during a tornado? windows and doors
What should you do if you are caught in a snowstorm? try to find shelter from the wind, cover exposed parts of your body and try to stay dry
How large is a typical hurricane? 600 kilometers across
Where do hurricanes form? Atlantic, Pacific and Indian oceans
What are hurricanes that form in the Western Pacific ocean called? typhoons
How do hurricanes begin? over warm ocean water as a low pressure area, or tropical disturbance
When do hurricanes typically happen in the US? August, September & October
How strong can hurricane winds get? 320 kilometers per hour
What kind of damage can storm surges cause? washing away beaches, destroying buildings along the coast & eroding coastlines
What should you do if you receive a hurricane warning? evacuate immediately
Created by: lprinke



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