EAPS 106 STUDY GUIDE EXAM 4 | QUESTIONS AND
ANSWERS | WITH COMPLETE SOLUTION.
What happens when warm, moist air rises. Answer - it expands due to lower
pressures with altitude, causing it to cool. causes some of the water vapor to
condense back into droplets and ice crystals, forming clouds
How atmospheric pressure changes with altitude Answer - Air pressure and
density decreases with higher altitudes. drop in pressure causes air to expand
and cool,causing invisible water vapor to condense intovisible ice crystals
(pressure would be too low forwater droplets).
What happens when warm, moist air cools Answer - Vapor condense back into
droplets and ice crystals, forming clouds
The kind of clouds that lead to the biggest thunderstorms Answer -
Cumulonimbus clouds
What happens when a cold and warm air masses collide Answer - -Cold fronts
give rise to strong thunderstorms because they rapidly push warm moist air
high into the atmosphere, forming Cumulonimbus clouds.
• Warm fronts give rise to gentle showers as warm air gradually gains altitude,
forming Cumulus clouds.
, The relative density of dry air and moist air. Answer - Dry air is heavier than
moist air
What causes lightning Answer - sudden electrostatic discharge between
oppositely charged regions of a cloud or between a cloud and the ground
What causes thunder Answer - A lightning bolt almost instantly raises the
temperature of air to over 50,000° F, causing a rapid expansion of the air that
results in a shock wave we hear as thunder.
Lightning safety practices Answer - - to prevent electricity from passing
through your heart Do not take refuge under tall isolated objects that can act
as step leaders
-Thunder cannot occur without lightning, even if you do not see it.
- The Lightning Crouch is supposed to prevent electricity from passing through
your heart
How hail forms in thunderstorms Answer - ice crystals that travel repeatedly
above and below the freezing line, enabling additional water to freeze onto
them until they becomes too heavy for the up drafts and fall to the ground.
What thunderstorm microbursts are Answer - Microbursts (or downbursts) are
areas of rapidly descending cold air that cause strong wind shear that can
knock down trees and houses like a tornado.
Basic characteristics of supercells Answer - - strong windshear leads to a
horizontal vortex that is then uplifted and rotates into a vertical vortex.
- supercell can focus the rotating motion into tighter vortex called a
mesocyclone, which can further focus into a tornado.
ANSWERS | WITH COMPLETE SOLUTION.
What happens when warm, moist air rises. Answer - it expands due to lower
pressures with altitude, causing it to cool. causes some of the water vapor to
condense back into droplets and ice crystals, forming clouds
How atmospheric pressure changes with altitude Answer - Air pressure and
density decreases with higher altitudes. drop in pressure causes air to expand
and cool,causing invisible water vapor to condense intovisible ice crystals
(pressure would be too low forwater droplets).
What happens when warm, moist air cools Answer - Vapor condense back into
droplets and ice crystals, forming clouds
The kind of clouds that lead to the biggest thunderstorms Answer -
Cumulonimbus clouds
What happens when a cold and warm air masses collide Answer - -Cold fronts
give rise to strong thunderstorms because they rapidly push warm moist air
high into the atmosphere, forming Cumulonimbus clouds.
• Warm fronts give rise to gentle showers as warm air gradually gains altitude,
forming Cumulus clouds.
, The relative density of dry air and moist air. Answer - Dry air is heavier than
moist air
What causes lightning Answer - sudden electrostatic discharge between
oppositely charged regions of a cloud or between a cloud and the ground
What causes thunder Answer - A lightning bolt almost instantly raises the
temperature of air to over 50,000° F, causing a rapid expansion of the air that
results in a shock wave we hear as thunder.
Lightning safety practices Answer - - to prevent electricity from passing
through your heart Do not take refuge under tall isolated objects that can act
as step leaders
-Thunder cannot occur without lightning, even if you do not see it.
- The Lightning Crouch is supposed to prevent electricity from passing through
your heart
How hail forms in thunderstorms Answer - ice crystals that travel repeatedly
above and below the freezing line, enabling additional water to freeze onto
them until they becomes too heavy for the up drafts and fall to the ground.
What thunderstorm microbursts are Answer - Microbursts (or downbursts) are
areas of rapidly descending cold air that cause strong wind shear that can
knock down trees and houses like a tornado.
Basic characteristics of supercells Answer - - strong windshear leads to a
horizontal vortex that is then uplifted and rotates into a vertical vortex.
- supercell can focus the rotating motion into tighter vortex called a
mesocyclone, which can further focus into a tornado.
