Astronomy Review #3
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by Paul Felstiner
| 7 Questions
1
1
According to the HR diagram above, an example of a star with a relatively low surface temperature and relatively dim would be
Sirius B
Spica
Antares
Wolf 359
2
1
Which of the following represents the correct life stage sequence for a high mass star?
white dwarf--red giant--main sequence--supernova
protostar--main sequence--white dwarf--red giant
protostar--main sequence--supergiant--supernova--black hole
protostar--main sequence--red giant--planetary nebular--white dwarf
3
1
Which of the following measures of brightness depend on where you measure it from?
Apparent magnitude
Absolute magnitude
4
1
An element has 14 protons, 15 neutrons, and 14 electrons. What is the element and is it an isotope or an ion?
5
1
If Potassium is an ion with a +1 charge, then how many protons and electrons does it have?
19 protons and 20 electrons
20 protons and 19 electrons
19 protons and 18 electrons
20 protons and 21 electrons
6
1
State Hubble's law and explain the equation and relationship shown in the data above.

7
1
The hydrogen red line (656 nm) from a distance galaxy has a measured wavelength of 675 nm, what is its recessional speed as a percent of the speed of light. SHOW ALL WORK.
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