Download Unit Test Review Answers 2017

Astronomy Review Answers
1.
2.
3.
4.
5.
6.
Temperature
Blue Giant – red supergiant – supernova explosions –neutron star
Blue
Absolute magnitude and temperature
spiral, elliptical, irregular
globular star clusters are thousands of stars grouped very close together and these
are older stars. Open star clusters are new young stars and are close, but
randomly spread out.
7. Big Bang – single infinitely small point exploded outward in every direction
8. a. Steady State – everything in the universe was, is and always will be the same
b. Plasma – fourth state of matter exists everywhere and electricity/magnetisms
created galaxies from plasma
c. Cosmic string- everything exists on various strings created by gravitational shift
in space
d. Big bore – universe will continue to expand
e. Big crunch – due to dark matter universe will eventually go back to singular pt
f. plateau – eventually universe will stop expanding and stay at the same size
forever
g. Inflationary theory – supports big bang and says immediately after big bang
universe expanded extremely rapidly.
9. The original mass or size
10. dies out to red dwarf, brown dwarf, black dwarf
11. main –sequence to red giant to white dwarf
12. planetary nebula
13. black hole or neutron star
14. watch planetary nebula or stellar gas swirl into black hole
15. main sequence
16. main sequence
17. the ability to use light broken down through a prism to identify elements that make
up object.
18. each one is unique and can be used to identify what the star is made of.
19. light travels through prism, is broken apart into unique colors and projected onto a
spectra
20. the distance light travels in one year. Measured in meters
21. Yes, it appears slow to us, but it is actually pretty fast because galaxies are moving
away from each other
22. it is very cool, and the particles are spread very far apart
23. white dwarf
24. neutron star
25. black hole
26. spiral
27. Hubble
28. leftover radiation found everyone that came from the big bang
29. red shift in all galaxies moving away from each other and that galaxies farther
away from each other move faster.
30. 13.7 or 13.8 billion years.
31. Refracting
32. Copernicus
33. Mass
34. False
35. 300,000,000 meters/second
36. to magnify distant images
37. gamma ray, x-ray, UV ray
38. Gamma
39. Always present in the sky and Polaris is an example.
40. 7 types of EM radiation
41. Gravity
42. itself
43. image is reversed in both
44. the length required for any lens to focus the image at one particular point
45. to gather and focus light or an image
46. long wavelength of radio waves
47. interference of image on lens or mirror
48. Kepler
49. UV radiation
50. 2.2 million years
51. Movement around another object
52. Constellations
53. Visible Light
54. Because a lens spreads out the colors of the visible light and a mirror focuses the
colors to one point.
55. Sun, Moon, Earth.
56. Sun, Earth, Moon
57. Sun and moon, moon is stronger
58. Nuclear Fusion
59. H + H makes He + Energy
60. Tilt of the Earth’s Axis
61. Direct rays hit the Earth directly and cause higher heat for summer, indirect rays hit
Earth at an angle and cause cooler temperatures for winter.
62. 8
63. ½
64. Waxing means rising moon, waning means setting moon.
65. 4 (2 high and 2 low)
66. Direct rays
67. The farther away the galaxies get the faster they are moving, meaning universe
expansion is occurring.
68. Mercury, Venus, Earth, Mars
69. Jupiter, Saturn, Uranus, Neptune.
70. Immediately after Neptune at the edge of our solar system.
71. Meteor: A piece of matter burning up as it passes through the atmosphere.
Meteoroid: A piece of matter in space that has not yet entered Earth’s atmosphere.
Meteorite: When the piece of matter makes it through the atmosphere and makes it
to the Earth’s surface.