Environmental Science
According to the Stefan-Boltzmann law, the radiative energy emitted by one square meter of an object is equal to a constant multiplied by its temperature raised to the _______ power.

Tenth
Fourth
Negative third
Zeroeth

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Environmental Science
Which of the following is not a reason why water warms and cools much more slowly than land?

A portion of the solar energy that strikes water is used to evaporate it
Solar energy penetrates more deeply into water
Heat energy is mixed in a deeper layer of water
Water has a higher heat capacity
It takes more heat to raise the temperature of a given amount of soil 1oC than it does to raise the temperature of water 1oC

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Environmental Science
The aurora is produced by:

Scattering of sunlight in the upper atmosphere
Burning oxygen caused by the intense sunlight at high altitude
Fast-moving charged particles colliding with air molecules
The combination of molecular and atomic oxygen to form ozone
Reflections of sunlight by polar ice fields

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