Emission nebulae occur only near stars that emit large amounts of ________ electromagnetic radiation
A) infrared B) radio C) visible light D) ultraviolet E) X-ray
D
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Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, the average molecular kinetic energy of oxygen, compared to hydrogen,
A) is greater. B) is less. C) is the same. D) cannot be determined since pressure and volume are not given.
How do we test our computer models for the interior of the Sun?
A) taking movies of the solar prominences and flares B) sending a probe to the Sun to plunge into its interior C) monitoring the helium content of the surface of the Sun D) comparing model predictions to how the Sun actually vibrates
The most common igneous rock is
A) basalt. B) andesite. C) granite. D) none of these
The solar constant is a measure of
a. the amount of solar energy reaching Earth.
b. the length of the sunspot cycle.
c. the period of rotation of the Sun's equator.
d. the average number of sunspots seen during the Maunder minimum.
e. the Sun's mass.