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The two most significant atmospheric greenhouse gases in the earth's atmosphere are _____ and______.
water vapor and carbon dioxide
The earth emits maximum radiation in the _____ portion of the spectrum, while the sun emits maximum radiation at _____ wavelengths.
If the present concentration of CO2 doubles, climatic models predict that for the earth's average temperature to rise by as much as 4.5 degrees, the gas_____ _____ must also increase in concentration.
The wavelength range where neither water vapor nor carbon dioxide absorbs much of the earth's infrared radiation is known as the atmospheric_____.
The temperature at which the earth is both absorbing solar radiation and emitting infrared radiation at equal rates is called the Earth's _____ _____ _____
radiative equilibrium temperature
Sunlight deflected in all directions after striking very small objects is said to be_____.
If the earth had no atmosphereic greenhouse effect, the average surface temperature would be:
lower than at present
If the earth's average surface temperature should increase, the amount of radiation emitted from the earth's surface will_____, and the wavelength of maximum emission will shift toward_____ wavelengths
The earth's atmospheric green house effect is produced mainly by water vapor and carbon dioxide absorbing and emitting:
The albedo or the moon is 7 percent. This means that:
7 percent of the sunlight that strikes the moon is reflected
Clear, calm night are usually cooler than cloudy, calm nights because:
clouds absorb and re-radiate infrared radiation back to the earth's surface
Which of the gases below is not believed responsible for enhancing the earth's atmospheric greenhouse effect?
molecular nitrogen (N2)
The law that states that good absorbers of radiation are good emitters of radiation at a particular wavelength:
Annually, polar regions lose more heat energy than they receive, yet they are prevented from becoming progressively colder each year mainly by the:
conduction of heat through the interior of the earth
If the average surface temperature of the earth should increase, the amount of raiant energy emitted from the surface would:
On the average, about 50% of the solar radiation that strikes the outer atmosphere eventually reaches the earth's surface.
On the average, each year the earth-atmosphere system sends off into space just as much energy as it receives.
An increase in cloud cover around the earth would probably increase the albedo of the earth-atmosphere system.
The process of condensation, freezing, and deposition all release sensible heat in the environment.
In direct sunlight, an object with a high albedo appears darker than an object with a low albedo.
The earth's radiative equilibrium temperature is lower than the earth's observed average surface temperature.
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