Astronomy Final

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Astronomy final exam study

  
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1.  If you have a 100-watt light bulb, how much energy does it use each minute?
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2.  If a material is highly opaque, then it
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3.  When light reflects off an object, what is the relation between the angle of incidence and the angle of reflection?
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4.  If a material is transparent, then it 
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5.  Grass (that is healthy) looks green because
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6.  Everything looks red through a red filter because
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7.  Which of the following cannot be described by a field?
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8.  Our solar system is located in the center of the Milky Way Galaxy
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9.  The solar system contains about 100 billion stars 
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10.  A typical supercluster contains no more than about 10,000 stars
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11.  One light-year is about 10 trillion kilometers 
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12.  In the grapefruit model of the solar system, it would take a few minutes to walk from the Sun to the inner edge of the Kufper Belt (Pluto)
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13.  The observable universe is the same size today as it was a few billion years ago. 
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14.  The Milky Way is moving further away from most other galaxies in the universe
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15.  No galaxies existed before the Big Bang
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16.  Voyager 2 should reach the nearest stars (besides the Sun) in about 500 years
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17.  Earth is always precisely 1 AU from the sun. 
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18.  What do we mean when we say that the universe is expanding?
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19.  The age of the universe is 
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20.  How are galaxies important to our existence?
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21.  Earth is made mostly of metals and rocks. Where did this material come from?
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22.  What is nuclear fusion?
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23.  What is the meaning of the word cosmos?
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24.  Which of the following has your "address" in the correct order?
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25.  About where is our solar system within the Milky Way Galaxy?
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26.  Roughly how many stars are in the Milky Way Galaxy?
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27.  Modern telescopes are capable of seeing bright galaxies up to about
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28.  Suppose we imagine the Sun to be about the size of a grapefruit. How big of an area would the orbits of the nine planets of the solar system cover?
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29.  In South Africa, it's usually quite warm around the time of the winter solstice and quite cool around the time of the summer solstice
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30.  Columbus was the first person to discover that Earth is round
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31.  You can find the tilt of Earth's axis by measuring the angle between your horizon and the North Star
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32.  The Milky Way can be seen only from the Northern Hemisphere
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33.  The seasons on Earth are caused by its elliptical orbit from the Sun
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34.  At midnight it is sometimes possible to observe the crescent Moon on the meridian
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35.  It is possible to see the third-quarter Moon near the western horizon at sunrise
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36.  It is possible to see the full Moon rising just before sunrise
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37.  If you lived on the Moon, you'd see full Earth when we see new Moon. 
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38.  It is possible to view the Moon in first-quarter phase the day after a total lunar eclipse
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39.  The Moon and the Sun are approximately the same angular size
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40.  A solar eclipse occurs only when the Moon is new
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41.  A lunar eclipse occurs only when the Moon is new
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42.  Speed and velocity are the same thing
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43.  The Moon is constantly falling toward Earth
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44.  If you are driving at 30 miles per hour and increase your speed to 60 miles per hour, you quadruple your kinetic energy
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45.  If you double the mass of fusion material in a hydrogen bomb, you quadruple the amount of energy generated
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46.  When energy is converted from one form to another, a tiny amount is inevitably lost
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47.  Kepler deduced his laws of planetary motion once Newton had published his universal law gravitation. 
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48.  The center of mass for Earth orbiting the Sun lies inside the Sun
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49.  There is no gravity in space
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50.  Doubling the distance between two objects halves the gravitational force between them
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51.  The escape velocity from Earth is greater for larger rockets than for small ones
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52.  Tidal friction caused by Earth's stretching from the Moon's gravity is gradually slowing down the rotation of Earth
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53.  The Moon is slowly moving away from Earth
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54.  Which of the following is an example in which you are traveling at constant speed but not at constant velocity?
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55.  What is the acceleration of gravity of Earth?
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56.  If you drop a rock from a great height, about how fast will it be falling after 5 seconds, neglecting air resistance?
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57.  Momentum is defined as
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58.  If an object's velocity is doubled, the momentum is
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59.  As long as an object is not gaining or losing mass, a net force on the object will cause a change in
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60.  If you mass is 60kg on Earth, what would your mass be on the Moon?
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61.  In which of the following cases would you feel weightless?
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62.  You are standing on a scale in an elevator. Suddenly you notice your weight decreases. What do you conclude?
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63.  What would happen if the Space Shuttle were launched with a speed greater than Earth's escape velocity?
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64.  Suppose an object is moving in a straight line at 50mi/hr. According to newton's first law of motion, the object will
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65.  Which of the following statements is not one of Newton's laws of motion?
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66.  Newton's second law of motion tells us that the net force applied to an object equals its
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67.  How does the Space Shuttle take off?
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68.  The movement of a pool ball, after being struck by a cue, is an example of
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69.  The fact that the Voyager spacecraft continue to speed out of the solar system, even though its rockets have no fuel, is an example of
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70.  Energy and power are different words for the same thing
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71.  Process of science: I am doing science when I already know the answer to my scientific question and I am searching for evidence in the natural world strictly to support what I know
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72.  Grass is green because it absorbs green light, reflecting all other colors
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73.  The shorter the wavelength of light, the higher its frequency 
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74.  The greater the wavelength of light, the greater its energy
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75.  X rays, because they have more energy, travel through space faster than visible light
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76.  X rays are always more intense than radio waves
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77.  You are currently emitting electromagnetic waves
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78.  There are more atoms in a glass of water than stars in the observable universe
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79.  Atomic nuclei consist of photons and electrons
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80.  Electrons orbit an atomic nucleus like planets orbit the Sun
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81.  The atomic nuclei of the same element always have the same number of protons
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82.  The atomic nuclei of the same elements always have the same number of neutrons
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83.  The energy levels for electrons vary from one element to another
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84.  The energy levels of an element and its ion are the same 
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85.  Lines of a particular element appear at the same wavelength in both emission and absorption line spectra
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86.  Any object moving relative to Earth will have a Doppler shift
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87.  Emission lines from different ionization states of the same element appear in the same place in the spectrum
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88.  We see each other in the classroom right now because we
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89.  Without telescopes or other aid, we can look up and see the Moon in the night sky because it
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90.  How many atoms fit across the period at the end of this sentence?
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91.  The frequency of a wave is
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92.  The wavelength of a wave is
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93.  How are wavelength, frequency, and energy related for photons of light?
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94.  From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation?
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95.  From shortest to longest wavelength, which of the following correctly orders the different categories of electromagnetic radiation?
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96.  Which of the following statements about X rays and radio waves is not true?
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97.  Which of the following statements about X rays and radio waves is not true?
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98.  Which is hotter?
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99.  What would happen inside the sun if a slight rise in core temperature led to a rapid rise in fusion energy?
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