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45 Cards in this Set
- Front
- Back
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The primary source for the earth's atmosphere |
The sun |
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The most abundant gases in the earth's atmosphere by volume are |
nitrogen and oxygen |
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The most abundant greenhouse gas in the earth's atmosphere is |
water vapor |
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ozone in the stratosphere |
protects life from harmful ultraviolet radiations |
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without the atmospheric greenhouse effect, the average surface temperature would be |
lower than at present |
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the greenhouse effect is produced mainly by the |
absorption and re-emission of infrared radiation by the atmosphere |
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Two objects have the same temperature. Object A feels colder to the touch than object B. This is probably because the two objects have different |
thermal conductivities |
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The percentage of water vapor present in the air compared to that required for saturation is the |
relative humidity |
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Clouds that have a characteristic lens-shaped appearance referred to as (a) |
lenticular |
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most thunderstorms do not extend very far into the stratosphere because the air in the stratosphere is |
stable |
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Which set of conditions , working together, will make the atmosphere the most stable |
cool the surface and warm the air aloft |
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If a parcel of unsaturated air with temperature 30 degrees celcius rises from the surface to an altitude of 1,000m the unsaturated parcel of temperature at this altitude would be about |
10 degrees celcius warmer than at the surface |
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On an isobaric surface |
pressure is constant |
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The amount of pressure change that occurs over a given horizontal distance is called |
pressure gradient |
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If the earth stopped rotating which of the following would NOT be true |
There would still be a coriolis effect |
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Thunder is caused by |
The rapid heating of air surrounding a lightning channel |
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It is now known that, overall clouds |
have a net cooling effect on the climate |
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about 97% of all ozone in the atmosphere is found in the |
stratosphere |
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In the middle latitudes of the Northern Hemisphere, surface winds tent to blow _____ and _____ around an area of surface low pressure |
Counterclockwise; inward |
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If the amount of energy lost by the earth to space each year were not approximately equal to that received |
the atmosphere's average temperature would change |
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as the air temperature increases, with no addition of water vapor to the air, the dew point will: |
remain the same |
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The cooling of the ground to produce dew is mainly the result of |
Radiation cooling |
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The sem-permanent pressure systems associated with the polar front are called |
subpolar lows |
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which latitudes belt best describes the middle latitudes |
10 degrees to 35 degrees |
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fog that forms off he coast of Newfoundland is mainly a form of |
advection fog |
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which two clouds can produce precipitation |
cumulonimbus, nimbostratus |
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The rate at which the actual air temperature changes with increasing height above the surface is referred to as the |
environmental lapse rate |
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the hottest atmospheric layer is the |
thermosphere |
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on a weather map, sharp changes in temperature, humidity, and wind direction are marked by |
a front |
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the coldest of all air masses is |
cA |
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The most abundant gas in the stratosphere is |
Nitrogen |
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detached clouds of delicate and fibrous appearance, without shading, usually in white colour and silky appearance are |
cirrus |
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upslope fog form because air ___ as it flows up a hill or mountain range |
warms adiabatically |
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on a weather map ridges are |
elongated high pressure areas |
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a wind vane that usually consists of tree or more cups |
anemometer |
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What type of air mas would be responsible for hot muggy summer in the Eastern half of the United States |
mT |
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on a weather map the transition zone between two air masses with sharply contrasting properties is marked by |
a front |
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which of the following is NOT considered a temperature scale? |
calorie |
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In clear weather, the air next to the ground is usually ____ than the air above during the night and____ than the air above during the day |
colder; warmer |
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which of the following instruments measures pressure? |
barometer |
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The rate of the earth's rotation determines the strength of the |
Coriolis effect |
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If an air parcel is completely at rest, which of the following forces make the parcel begin to move? |
Pressure gradient |
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The temperature scale where 0 degrees represent freezing and 100 degrees boiling is called |
Celcius |
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The strongest radiation inversion occurs when |
skies are clear |
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The vertical motion of air caused by the heating of the ground is called |
convection |
