Sim-Planet: Make the difference between the night and day temperatures larger.
A) Increase the tilt of the planet's rotation axis.
B) Increase the greenhouse gas content of the planet's atmosphere.
C) Move the planet closer to the Sun.
D) Make the planet rotate more slowly.
Question 2
If you heat a gas so that collisions are continually bumping electrons to higher energy levels, when the electrons fall back to lower energy levels the gas produces
A) thermal radiation.
B) radio waves.
C) an absorption line spectrum.
D) an emission line spectrum.
E) X-rays.
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