Astronomy Exam Review

3. The force that is most responsible for the formation of a star.
5. The astronomer who first discovered the red shift of light from distant galaxies, showing that they are moving away from us.
6. Type of motion of objects in the sky that is due to earth's rotation.
10. You observe a waxing gibbous moon at 10 PM. What would the moon phase be at 3 AM?
11. Group of planets having relatively thin atmospheres, a rocky crust, and a metal core.
12. The path the Sun appears to follow through the sky over the course of a year.
17. Stars form in giant _____.
19. A glowing light display in the upper atmosphere produced due to solar flares and/or CMEs.
20. The celestial equivalent of latitude.
22. A unit used to measure the distance to stars.
23. What color are the hottest stars?
24. Refined the theory of general relativity to explain the motion of the planet Mercury.
26. All of the elements heavier than iron came from a _____ explosion.

1. A method used to measure the distance to nearby stars based on the diameter of earth's orbit and an apparent shift in the star's position over a 6 month period.
2. The next stage in the Sun's life cycle - when it runs low on Hydrogen in the core.
3. Discovered that Venus has phases like the Moon.
4. Nuclear ___ in the core of a star turns hydrogen into helium. making lots of energy.
6. Brightness of a star due to its distance from Earth.
7. When will a flagpole have no shadow in Remus?
8. Model of the universe that puts Earth at the center.
9. The time of year when the Sun is at the point in the sky where the ecliptic and the celestial equator intersect.
13. Largest volcano in the solar system.
14. Stars that are fusing hydrogen into helium are on what part of the HR Diagram?
15. An eclipse that occurs when the Moon casts its shadow on the Earth.
16. You can't see Polaris, our _____, if you are south of the equator.
18. The groups that stars are placed in based on their spectra.(OBAFGKM)
21. A chart that compares the brightness and temperatures of main sequence stars.
25. If the Sun were in the constellation Taurus at noon, in which constellation would it be at sunset?