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Which stage of thunderstorm development is dominated by downdrafts?
Dissipating
Complete this statement: 'Air rises, , , forms _.'
cools, condenses, clouds
The slope of a cold front is steeper than that of a warm front. True or False?
True
As a warm front passes, temperature will increase. True or False?
True
Warm fronts are shown on a map as a line with .
semi-circles
Cold fronts are shown on a map as a line with .
triangles
In the southwest US when cT and mT air masses collide it commonly produces __.
dry line
Humid air is than dry air of the same temperature.
less dense
Nor'easters are a type of __.
mid-latitude cyclone
Air density at the surface is largely controlled by and .
temperature; humidity
Microbursts are the result of __.
strong updrafts
The basic cause of lightning is __.
a large charge separation.
For a thunderstorm to be classified as severe the winds must be or have hail .
60 kts; >5 in
Most tornadoes move to the northeast. True or False?
True
The Enhanced Fujita Scale is applied to __.
tornadoes
EF-5 hurricanes are the most common but do the least amount of damage. True or False?
False
What does the term mesocyclone refer to in reference to a tornado?
the area of rotation in a thunderstorm
Most lightning is cloud-ground. True or False?
True
What was so unusual about the 2011 tornado season?
the spring had a record number of tornadoes and fatalities.