Astronomy Review #2
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by Paul Felstiner
| 8 Questions
1
1
According to the HR diagram above, an example of a star with a relatively high surface temperature but is not very bright would be
Sirius B
Spica
Antares
Wolf 359
2
1
Low mass stars end their lives as
planetary nebula
neutron stars or possibly a black hole
Red giants
White dwarves

3
1
According to Hubble's Law
Higher mass stars are found in more distant galaxies
The farther away galaxies are receding faster than closer galaxies
Closer galaxies are moving toward us at increasing speeds
Closer galaxies are moving away faster than farther away galaxies
4
1
The formation of elements heavier than Iron can only be explained by the action of
Thermonuclear fusion in main sequence stars
The collapse of a red giant star
Supernovea explosions
Black holes
5
1
The age of our universe is
65 million years
4.6 Billion years
13.7 Billion years
6
1
Light coming from a galaxy the hydrogen red line at 705 nm. If the hydrogen red line in the lab is confirmed at 656 nm, at what percent of the speed of light is the galaxy receding?
7.0%
7.5%
9.0%
90%
7
1
The most common isotope of Chlorine has how many protons, neutrons, and electrons?
8
1
Draw the electron configuration for Nitrogen.
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