Exam 2 Study Guide (11/2/16)
The questions on the exam will be multiple choice, true-false, or matching. I am not going to do matching questions, but I will do the other two. Answers will be at the end, but please try to answer first before looking at the answer!
1. A solar eclipse is possible anytime from sunrise to sunset, but a lunar eclipse is possible anytime between a full moon rise to full moon set.
2. The penumbral is the darker shadow that a body puts on another body, while the umbra is the lighter shadow. (For example, when the Earth is between the Moon and the Sun, the Earth casts a shadow on the Moon. There is a dark shadow which is smaller and a larger, lighter shadow.) We also discuss several other topics like What are the three stages of attraction?
3. What is a total lunar eclipse?
a. When the Moon is in the penumbral of the Earth.
b. When the Moon is in the umbra of the Earth.
c. When the Earth is in the Moon’s penumbral.
d. When the Earth is in the Moon’s umbra.
4. How much bigger is the Sun than the Moon?
d. We don’t know
5. What is a difference between sound waves and light waves? a. Light waves need a medium, but sound waves don’t.
b. Sound waves need a medium, but light waves don’t.
c. Light waves travel faster than sound waves.
d. Both B and C
6. The wavelength is described as the distance between two crests or two troughs (in meters). If you want to learn more check out How do you explain chirality?
7. What is the wave frequency?
a. The distance between 2 crests or 2 troughs
b. The number of crests or the number of troughs passing through any point per time
c. Inversely related to the wavelength
d. Both B and C
8. White light is the same as visible light. If you want to learn more check out Why are men commonly believed to have greater sexual drive, interest and activity than women?
9. How many meters is 10^9 nano meters?
a. 1 meter
b. 10 meters
c. 100 meters
d. 1,000 meters
10. Red light has more energy than violet light.
11. Visible light is the only light.
12. What kind of light do humans give off?
a. Humans don’t give off light
13. What is the order of the Electromagnetic Spectrum (from longest wavelength to shortest wavelength)? We also discuss several other topics like How probation ends?
a. Radio, Infrared, Visible, Ultraviolet, X-rays, Gamma Rays b. Infrared, Radio, Ultraviolet, Visible, X-rays, Gamma Rays c. Ultraviolet, Visible, Radio, Infrared, X-rays, Gamma Rays d. Gamma Rays, X-rays, Radio, Infrared, Ultraviolet, Visible 14. Gamma rays are the most energetic waves.
15. When is the next solar eclipse?
a. We don’t know
b. Not until 2020
c. August 21, 2017
d. September 28, 2018
16. Light is NOT an electromagnetic radiation.
17. How do you calculate photon energy?Don't forget about the age old question of How rauvolfia serpentina went from being a traditional medicine to becoming a valued medicinal resource in western cultures?
a. Wavelength divided by the speed of light
b. Speed of light divided by wavelength
c. Wavelength divided by frequency If you want to learn more check out Who wins and who loses from free international trade?
d. Frequency divided by speed of light
18. Visible light has the largest range out of all the light rays. a. True
19. Which type(s) of telescope(s) can only be used in space? a. X-ray telescopes
b. Gamma ray telescopes
c. Radio telescopes
d. A and B
20. Sound is NOT an electromagnetic wave.
21. What is spectroscopy?
a. The study of the stars’ elements
b. The study of the spectrum
c. The study of diffraction grading
d. None of the Above
22. You can use a spectroscope to view the spectrum. a. True
23. Which of the following are examples of diffraction grading?
b. Peacock feathers
c. Sun catchers
d. Water droplets
e. All of the Above
f. A,B, and C
g. Only A and B
24. Every chemical has its own unique spectrum when its light is looked at through a prism.
25. What does an emission spectrum look like?
a. A continuous rainbow
b. Dark background with colored lines
c. Rainbow background with black lines
d. None of the Above
26. What will produce a continuous spectra?
a. All luminous solids or liquid hotter than than its surroundings b. Low density hot gas
c. Cold gas with light source behind it
d. It varies
27. The Sun has an absorption spectra.
28. Electrons can stay in discrete energy orbits, but not inbetween.
29. How long can an electron stay in its 1st excited state?
a. 1 second
b. 0.5 seconds
c. 10^-6 seconds
d. 10^-8 seconds
30. When do we get an absorption spectra?
a. When an electron gets excited and jumps to a higher excited state b. When an electron gets excited and jumps out of the atom c. When an electron stays the same
d. When an electron goes back to the ground state
31. The ground state is the lowest energy state of an electron a. True
32. How many moons does Jupiter have?
33. How many moons do the Terrestrial planets have together? a. 87
34. Pluto was discovered in 1930.
35. What is the IAU?
a. The International Astronomy University
b. The International Astronomical Union
c. The Imaging of Astronomy Uncovered
d. None of the Above
36. The asteroid belt is between Jupiter and Saturn.
37. What is the difference between mass and density?
a. Mass is the total amount of atoms in something, while density is the degree of compactness
b. Mass is the degree of compactness, while density is the total amount of atoms in something
c. Mass is the amount of light that bounces off of the object, while density is how heavy it is
d. Mass is how heavy something is, while density is how big it is 38. Atoms can get excited collisionally or radiatively.
39. If an electron is not in the ground state and it is not ionized, it is excited. a. True
40. Electons’ orbits are NOT circular.
41. How many plutoids are in our solar system?
42. All the planets in our solar system have at least one moon. a. True
43. Planets are relatively isolated in space
44. Which of the following are TRUE differences between Terrestrial and Jovian planets?
a. Terrestrial planets are closer to the Sun, while Jovian planets are farther away from the Sun
b. Terrestrial planets are larger than Jovian planets.
c. Jovian planets have more moons than Terrestrial planets. d. Terrestrial planets have a faster rotation than Jovian planets e. A and C
f. B and D
g. All of the Above
45. All the planets in our solar system have a solid or a liquid-solid core. a. True
46. Mercury has the highest albedo of the planets in our solar system, and Venus has the lowest albedo.
47. How much less albedo does the Moon have than the Earth? a. 10%
48. Albedo is the amount of light that is reflected off of an object. What happens to the rest of the light that is not reflected?
a. It goes through the object
b. It is absorbed by the object
c. It disappears
d. We don’t know
49. How much larger is the Moon’s range of temperature than the Earth’s? a. The same
b. 2x larger
c. 3x larger
d. 4x larger
50. If you measure your mass on Earth, and then go to the Moon and measure your mass again, will it be different?
a. Yes, your mass will be 2x more than it was on Earth. b. Yes, your mass will be 2.5x more than it was on Earth. c. No, mass doesn’t change because of a change in gravity. d. None of the above
51. Weight = mass x gravity
2. B (The penumbral is the lighter and the umbra is the darker shadow) 3. B
10. B (Violet has more energy than red light.)
16. B (Light IS an electromagnetic radiation – EM)
18. B (Visible has the smallest range out of all the light rays) 19. D
36. B (The asteroid is between Mars and Jupiter)
42. B (Mercury and Venus do not have any moons)
46. B (Venus has the highest albedo and Mercury has the lowest albedo)
47. C 48. B 49. B 50. C 51. A