Environmental Science
"A good absorber of a given wavelength of radiation is also a good emitter of that wavelength." This is a statement of:

Kirchoff's Law
Wien's Law
The Law of Relativity
The First Law of Thermodynamics
Stefan-Boltzmann's law

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Environmental Science
Which of the following helps to explain why even though northern latitudes experience 24 hours of sunlight on June 22, they are not warmer than latitudes further south?

Solar energy is spread over a larger area in northern latitudes
Solar energy is used to melt frozen soil in the northern latitudes
Some of the sun's energy is reflected by snow and ice in the northern latitudes
All of these
Increased cloud cover reflects solar energy in the northern latitudes

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Environmental Science
Infrared and visible satellite images might provide:

A way of distinguishing between wet and dry clouds.
A way of determining cloud thickness and altitude.
A way of distinguishing between "new" and "old" clouds.
A way of identifying clouds suitable for cloud seeding.

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