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Questions and Answers
What causes relief rain?
What causes relief rain?
- The sun heating the earth
- Moist air forced to rise over mountains (correct)
- Ground warmed by the sun
- Two air masses meeting
In relief rain, what happens as the moist air rises over mountains?
In relief rain, what happens as the moist air rises over mountains?
- Cold and warm air masses meet
- Warm air cools and sinks
- Air cools, condensation occurs, and rain falls (correct)
- Ground is warmed by the sun
What type of rain is caused by the sun heating the earth?
What type of rain is caused by the sun heating the earth?
- No rain is caused by the sun heating the earth
- Cyclonic rain
- Convectional rain (correct)
- Relief rain
Where does a rain shadow typically form?
Where does a rain shadow typically form?
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What characterizes cyclonic (frontal) rain?
What characterizes cyclonic (frontal) rain?
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Which type of rain is associated with a rain shadow?
Which type of rain is associated with a rain shadow?
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Study Notes
Relief Rain
- Moist air is forced to rise over mountains, resulting in rainfall
- Example: Mountains in the west of Ireland, where moist air blows in from the Atlantic Ocean
- The process of relief rain involves:
- Warm, moist air being blown in from the sea
- Air rising over mountains, cooling, and condensing, resulting in cloud formation and rain
- Air losing most of its moisture, sinking, and warming, leading to less rainfall
- Creation of a rain shadow, which receives less rain
Rain Shadow
- An area in the sheltered (or leeward) side of mountains that receives less rain than the windward side
- Created when air loses most of its moisture and sinks, resulting in less rainfall
Convectional Rain
- Caused by the sun heating the earth, resulting in warm, light air rising
- Examples: Along the equator on most days, and in Ireland during a hot summer (a sun shower)
- The process of convectional rain involves:
- Ground being warmed by the sun
- Air being warmed by the ground, rising, and cooling
- Condensation occurring, resulting in rain
Cyclonic Rain
- Caused by the meeting of two air masses: a cold and a warm air mass
- Example: Low pressure or depression over Ireland
- Results in rainfall due to the collision of the two air masses
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