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31 Cards in this Set
- Front
- Back
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In warm clouds up to 1 km how to rain droplets grow? |
Collision and coalescence. |
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Does condensation provide an efficient means of raindrop formation? |
No |
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In warm clouds how to rain droplets form through collision? |
Small cloud droplets join together by random collisions. |
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In warm clouds how do rain droplets form through coalescence? |
Large and faster moving cloud droplets over take smaller and slower droplets in their path to form larger droplets. |
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True or false. Large rain droplets occur due to liquid water content, range of cloud droplet sizes, cloud thickness, updraft strength, and droplets electrical charges. |
True. |
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True or false. In cold clouds above 6-7 km rain droplets form through accretion and aggregation. |
True |
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In high, cold clouds how do rain droplets form through accretion? |
A process where ice Crystal growth occurs by sweeping up supercooled water drops. |
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In high, cold clouds how do rain droplets form through aggregation? |
The process by which ice Crystal collide and form a single larger ice particle. |
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In the northern hemisphere how do winds blow around a low pressure center? |
Counterclockwise and towards the low pressure. |
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In the northern hemisphere how do winds blow around a high pressure center? |
Clockwise and away from the high pressure. |
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What are the four forces that influence winds? |
Pressure gradient Force, coriolis Force, centrifugal force, frictional force |
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Does pressure increase or decrease with increased height? |
Decreases. |
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Does cold air shrink or expand? |
Shrink |
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Does warm air shrink or expand? |
Expand |
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Does air move from high to low pressure or low to high pressure? |
High to low pressure. |
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What is the pressure gradient Force? |
Horizontal difference in atmospheric pressure that causes wind to blow. |
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True or false. Steep pressure gradient correspond to stronger pressure gradient force and vice versa. |
True |
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What is the Coriolis effect? |
Apparent force due to the rotation of the Earth |
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The magnitude of the Coriolis effect depends on what two factors? |
Latitude and speed of air. |
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True or false. The lower the latitude the larger the Coriolis effect? |
False |
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The faster air moves what happens to the Coriolis Force? |
It becomes larger |
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Due to the Coriolis effect what happens to the intended path have a parcel in the northern hemisphere? |
Moves to the right of its intended path |
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What does the Coriolis Force have an influence on? Wind direction or wind speed? |
Wind direction. |
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Frictional force depends on what two factors? |
Speed of the air parcel and the roughness of the Earth's surface. |
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If wind speed and/or friction increase what happens to frictional force? |
Frictional force increases. |
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When is frictional force important? |
In the friction layer the lowest thousand meters of the atmosphere. |
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What is buys ballets law? |
With wind at your back low pressure will be to your left and high-pressure to your right |
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In scales of motion what is microscale? |
Up to 1 km. |
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In scales of motion what is mesoscale? |
1 km to 200 km |
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In scales of motion what is synoptic scale? |
200 km to 2000 km |
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And scales of motion what is planetary scale? |
Anything over 2,000 km |
