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Climate and the forces of nature (Hurricanes (Occur above warm seawater =…
Climate and the forces of nature
The mountains in the US extend from North to South.
Cold polar winds prevail in the winter
Blizzards, cold waves
Warm winds from the South prevail in the summer
Hot waves
These different winds cause big temperature differences.
Dust storms
High temperatures = strong winds blow sand and dust high in the air
Rains very heavily suddenly
Soil becomes muddy, begins to shift = flash floods
Hurricanes
Occur above warm seawater = approx. 27*C
Lose their strength above land
500-1500 km
5-10 days
South-East
August-October
Missisippi drainage basin
Great Flood in 1993, 50 people killed, 30,000 people had to flee
Warm humid air flows from the south to the middle of the US. This warm air clashes with cold air coming from Canada. A lot of rainfall is the result
Tornadoes
Column of air, rotates very fast
Cold dry air from the land meets warm humid sea air
Occur between March and July
Really strong winds, 1 km wide
Really short
Factors for the differences in the US
Not much influence from the sea (west)
A lot of influence from North (cold) and South (warm and moist)
Different latitudes and altitudes
A lot of precipitation along the west coast, because a lot of mountains, not much precipitation in the west, in the rain shadow of mountains