ASTR 201 Exam 3

3. This one of Einstein's theories of relativity states that mass tells space-time how to bend.
5. What is the stage of evolution when an intermediate-mass star is blowing off most of its mass due to its stellar winds (______ nebula)?
11. When a white dwarf has completely cooled from its initial temperature, it is now a _______ dwarf.
12. What did the LIGO experiment directly measure for the first time in 2015 (_______ wave)?
14. What type of everyday technology would not work as well without the theory of general relativity?
15. What type of powerful explosion occurs at the end stage of life for high-mass stars (specifically Type II)?
18. What can escape a black hole once you go past the event horizon?
20. This one of Einstein's theories of relativity states that the speed of light is a constant and space and time are linked together.
21. Which region of the ISM has high temperatures and low densities (________ gas)?

1. This type of nuclear reaction involves an atom of one element breaking apart into another atom.
2. If a star is fusing something into something else in its core to counteract the gravity of the star, it is said to be in ________ equilibrium.
4. What type of cycle do high-mass stars use to fuse hydrogen into helium in their cores?
6. If a low-mass star is fusing helium into carbon in its core, what branch is the star on?
7. When the escape velocity of a black hole equals the speed of light, it is called the Schwarzschild _________.
8. Which property of a star determines the lifetime of the star?
9. What is it called when a white dwarf in a binary system blows off excess mass resulting in a temporary increase in brightness for the white dwarf?
10. What is the final stage of a main sequence star with a mass of 30 Solar Masses?
11. This type of dwarf is an object that is large enough to fuse hydrogen into deuterium in its core, but not large enough to fuse hydrogen into helium.
13. The triple ________ process is the nuclear fusion process of burning helium into carbon.
16. Rapidly rotating neutron stars that we can see as their beams of light are pointed towards Earth.
17. What is the final stage of a main sequence star with a mass of 15 Solar Masses (_____ star)?
19. This portion of the ISM is sometimes called the smallest chemistry lab.