Astronomy Final

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Astronomy Quizzes & Trivia
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?
    • A. 

      6,000 Joules

    • B. 

      600 Watts

    • C. 

      6,000 Watts

    • D. 

      100 Joules

    • E. 

      600 Joules


  • 2. 
    If a material is highly opaque, then it
    • A. 

      Emits most light

    • B. 

      Reflects most light

    • C. 

      Absorbs most light

    • D. 

      Transmits most light

    • E. 

      Scatters most light


  • 3. 
    When light reflects off an object, what is the relation between the angle of incidence and the angle of reflection?
    • A. 

      Angle of incidence - Angle of reflection = 90 degrees

    • B. 

      Angle of incidence + Angle of reflection = 180 degrees

    • C. 

      Angle of incidence + Angle of reflection = 90 degrees

    • D. 

      Angle of incidence = Angle of reflection

    • E. 

      It depends on the material that the light reflects off


  • 4. 
    If a material is transparent, then it 
    • A. 

      Transmits light well

    • B. 

      Absorbs light well

    • C. 

      Emits light well

    • D. 

      Scatters light well

    • E. 

      Reflects light well


  • 5. 
    Grass (that is healthy) looks green because
    • A. 

      It reflects green light and absorbs other colors

    • B. 

      It absorbs green light and emits other colors

    • C. 

      It transmits green light and emits other colors

    • D. 

      It emits green light and absorbs other colors


  • 6. 
    Everything looks red through a red filter because
    • A. 

      The filter reflects red light and transmits other colors

    • B. 

      The filter emits red light and absorbs other colors

    • C. 

      The filter transmits red light and absorbs other colors

    • D. 

      The filter absorbs red light and emits other colors


  • 7. 
    Which of the following cannot be described by a field?
    • A. 

      Gravitational forces

    • B. 

      Electrical forces

    • C. 

      Radiation pressure

    • D. 

      Magnetic forces


  • 8. 
    Our solar system is located in the center of the Milky Way Galaxy
    • A. 

      True

    • B. 

      Falso


  • 9. 
    The solar system contains about 100 billion stars 
    • A. 

      True

    • B. 

      False


  • 10. 
    A typical supercluster contains no more than about 10,000 stars
    • A. 

      True

    • B. 

      False


  • 11. 
    One light-year is about 10 trillion kilometers 
    • A. 

      True

    • B. 

      False


  • 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)
    • A. 

      True

    • B. 

      False


  • 13. 
    The observable universe is the same size today as it was a few billion years ago. 
    • A. 

      True

    • B. 

      False


  • 14. 
    The Milky Way is moving further away from most other galaxies in the universe
    • A. 

      True

    • B. 

      False


  • 15. 
    No galaxies existed before the Big Bang
    • A. 

      True

    • B. 

      False


  • 16. 
    Voyager 2 should reach the nearest stars (besides the Sun) in about 500 years
    • A. 

      True

    • B. 

      False


  • 17. 
    Earth is always precisely 1 AU from the sun. 
    • A. 

      True

    • B. 

      False


  • 18. 
    What do we mean when we say that the universe is expanding?
    • A. 

      Individual galaxies are gradually growing in size

    • B. 

      Everything in the universe is gradually growing in size

    • C. 

      Average distances are increasing between star systems within galaxies

    • D. 

      The statement is not meant to be literal; rather, it means that our knowledge of the universe is growing

    • E. 

      Average distances are increasing between galaxies


  • 19. 
    The age of the universe is 
    • A. 

      Between 100 million and 160 million years

    • B. 

      Between 100 billion and 160 billion years

    • C. 

      Between 1 billion and 1.6 billion years

    • D. 

      Between 10 billion and 16 billion years

    • E. 

      Between 10 million and 16 million years


  • 20. 
    How are galaxies important to our existence?
    • A. 

      Without galaxies, there could not have been a Big Bang

    • B. 

      Without galaxies, the universe could not be expanding

    • C. 

      Galaxies provide the gravity that prevents us from falling off Earth

    • D. 

      Galaxies prevent planets from leaving their orbits around stars; e.h., our galaxy prevents Earth from leaving its orbit of the Sun

    • E. 

      Galaxies recycle heavy elements produced in stars into future generations of stars


  • 21. 
    Earth is made mostly of metals and rocks. Where did this material come from?
    • A. 

      It was produced by nuclear fusion in stars

    • B. 

      It was produced in the Big Bang

    • C. 

      It was made by nuclear fission of uranium and other radioactive materials

    • D. 

      It was made by our sun

    • E. 

      It was created by chemical reactions in interstellar space


  • 22. 
    What is nuclear fusion?
    • A. 

      An explosion caused by putting together two volatile chemicals

    • B. 

      A process that only occurs in bombs

    • C. 

      The process of turning matter into pure energy

    • D. 

      The process of combining lightweight nuclei to make heavier nuclei

    • E. 

      The process of splitting nuclei to produce energy


  • 23. 
    What is the meaning of the word cosmos?
    • A. 

      The dark sky

    • B. 

      The sum total of all matter and energy, that is, everything within and between all galaxies

    • C. 

      The light from a distant astronomical object

    • D. 

      The origin of Earth and life upon it

    • E. 

      The Milky Way


  • 24. 
    Which of the following has your "address" in the correct order?
    • A. 

      You, Earth, solar system,. Local Group, Local Supercluster, Milky Way

    • B. 

      You, Earth, solar system, Milky Way, Local Supercluster, Local Group

    • C. 

      You, Earth, solar system, Milky Way, Local Group, Local Supercluster

    • D. 

      You, Earth, Local Group, Local Supercluster, solar system, Milky Way

    • E. 

      You, Earth, solar system, Local Group, Milky Way, Local Supercluster


  • 25. 
    About where is our solar system within the Milky Way Galaxy?
    • A. 

      In the halo of the galaxy within the galactic disk

    • B. 

      At the center of the galaxy

    • C. 

      About two-third of the way from the center of the galaxy to the outskirts of the galactic disk

    • D. 

      About 10 percent of the way from the center of the galaxy to the outskirts of the galactic disk

    • E. 

      Near the far outskirts of the galactic disk


  • 26. 
    Roughly how many stars are in the Milky Way Galaxy?
    • A. 

      10 billion

    • B. 

      1 billion

    • C. 

      100 million

    • D. 

      100 trillion

    • E. 

      100 billion


  • 27. 
    Modern telescopes are capable of seeing bright galaxies up to about
    • A. 

      1 trillion light-years away

    • B. 

      10 billion light-years away

    • C. 

      10 million light-years away

    • D. 

      1 billion light years away

    • E. 

      1 million light years away


  • 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?
    • A. 

      The size of a small city

    • B. 

      The size of a typical dorm room

    • C. 

      The size of a typical campus building

    • D. 

      The size of a typical campus

    • E. 

      The size of a western stage (e.g., Colorado)


  • 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
    • A. 

      True

    • B. 

      False


  • 30. 
    Columbus was the first person to discover that Earth is round
    • A. 

      True

    • B. 

      False


  • 31. 
    You can find the tilt of Earth's axis by measuring the angle between your horizon and the North Star
    • A. 

      True

    • B. 

      False


  • 32. 
    The Milky Way can be seen only from the Northern Hemisphere
    • A. 

      True

    • B. 

      False


  • 33. 
    The seasons on Earth are caused by its elliptical orbit from the Sun
    • A. 

      True

    • B. 

      False


  • 34. 
    At midnight it is sometimes possible to observe the crescent Moon on the meridian
    • A. 

      True

    • B. 

      False


  • 35. 
    It is possible to see the third-quarter Moon near the western horizon at sunrise
    • A. 

      True

    • B. 

      False


  • 36. 
    It is possible to see the full Moon rising just before sunrise
    • A. 

      True

    • B. 

      False


  • 37. 
    If you lived on the Moon, you'd see full Earth when we see new Moon. 
    • A. 

      True

    • B. 

      False


  • 38. 
    It is possible to view the Moon in first-quarter phase the day after a total lunar eclipse
    • A. 

      True

    • B. 

      False


  • 39. 
    The Moon and the Sun are approximately the same angular size
    • A. 

      True

    • B. 

      False


  • 40. 
    A solar eclipse occurs only when the Moon is new
    • A. 

      True

    • B. 

      False


  • 41. 
    A lunar eclipse occurs only when the Moon is new
    • A. 

      True

    • B. 

      False


  • 42. 
    Speed and velocity are the same thing
    • A. 

      True

    • B. 

      False


  • 43. 
    The Moon is constantly falling toward Earth
    • A. 

      True

    • B. 

      False


  • 44. 
    If you are driving at 30 miles per hour and increase your speed to 60 miles per hour, you quadruple your kinetic energy
    • A. 

      True

    • B. 

      False


  • 45. 
    If you double the mass of fusion material in a hydrogen bomb, you quadruple the amount of energy generated
    • A. 

      True

    • B. 

      False


  • 46. 
    When energy is converted from one form to another, a tiny amount is inevitably lost
    • A. 

      True

    • B. 

      False


  • 47. 
    Kepler deduced his laws of planetary motion once Newton had published his universal law gravitation. 
    • A. 

      True

    • B. 

      False


  • 48. 
    The center of mass for Earth orbiting the Sun lies inside the Sun
    • A. 

      True

    • B. 

      False


  • 49. 
    There is no gravity in space
    • A. 

      True

    • B. 

      False


  • 50. 
    Doubling the distance between two objects halves the gravitational force between them
    • A. 

      True

    • B. 

      False


  • 51. 
    The escape velocity from Earth is greater for larger rockets than for small ones
    • A. 

      True

    • B. 

      False


  • 52. 
    Tidal friction caused by Earth's stretching from the Moon's gravity is gradually slowing down the rotation of Earth
    • A. 

      True

    • B. 

      False


  • 53. 
    The Moon is slowly moving away from Earth
    • A. 

      True

    • B. 

      False


  • 54. 
    Which of the following is an example in which you are traveling at constant speed but not at constant velocity?
    • A. 

      Driving backward at exactly 50 km/hr

    • B. 

      Driving around in a circle at exactly 100 km/hr

    • C. 

      Jumping up and down, with a period of exactly 60 hops per minute

    • D. 

      Rolling freely down a hill in a cart, traveling in a straight line

    • E. 

      None of the above


  • 55. 
    What is the acceleration of gravity of Earth?
    • A. 

      9.8 m/s downward

    • B. 

      9.8 km/s2 downward

    • C. 

      9.8 m/s2 downward

    • D. 

      9.8 km/s downward

    • E. 

      9.8 m2/s downward


  • 56. 
    If you drop a rock from a great height, about how fast will it be falling after 5 seconds, neglecting air resistance?
    • A. 

      It depends on what shape it is

    • B. 

      50 m/s

    • C. 

      10 m/s

    • D. 

      It depends on how heavy it is

    • E. 

      15 m/s


  • 57. 
    Momentum is defined as
    • A. 

      Mass times speed

    • B. 

      Mass times velocity

    • C. 

      Force times acceleration

    • D. 

      Mass times acceleration

    • E. 

      Force times velocity


  • 58. 
    If an object's velocity is doubled, the momentum is
    • A. 

      Doubled

    • B. 

      Quadrupled

    • C. 

      Unchanged

    • D. 

      Dependent on its acceleration

    • E. 

      Halved


  • 59. 
    As long as an object is not gaining or losing mass, a net force on the object will cause a change in
    • A. 

      Velocity

    • B. 

      Direction

    • C. 

      Acceleration

    • D. 

      Weight

    • E. 

      Speed


  • 60. 
    If you mass is 60kg on Earth, what would your mass be on the Moon?
    • A. 

      10kg

    • B. 

      10lb

    • C. 

      50kg

    • D. 

      60lb

    • E. 

      60kg


  • 61. 
    In which of the following cases would you feel weightless?
    • A. 

      While falling from an airplane with your parachute open

    • B. 

      While walking on the Moon

    • C. 

      While traveling through space in an accelerating rocket

    • D. 

      While falling from a roof

    • E. 

      None of the above


  • 62. 
    You are standing on a scale in an elevator. Suddenly you notice your weight decreases. What do you conclude?
    • A. 

      The elevator is accelerating downwards

    • B. 

      The elevator is accelerating upwards

    • C. 

      Your diet is working

    • D. 

      The elevator is moving at a constant velocity upwards

    • E. 

      The elevator is moving at a constant velocity downwards


  • 63. 
    What would happen if the Space Shuttle were launched with a speed greater than Earth's escape velocity?
    • A. 

      It would travel in a higher orbit around Earth

    • B. 

      It would take less time to reach its bound orbit

    • C. 

      It would be in an unstable orbit

    • D. 

      It would travel away from Earth into the solar system

    • E. 

      It would orbit Earth at a faster velocity


  • 64. 
    Suppose an object is moving in a straight line at 50mi/hr. According to newton's first law of motion, the object will
    • A. 

      Continue to move in the same way forever, no matter what happens

    • B. 

      Eventually slow down and come to a shop

    • C. 

      Continue to move in a straight line forever if it in space, but slow and stop otherwise.

    • D. 

      Continue to move in the same way until it is acted upon by a force


  • 65. 
    Which of the following statements is not one of Newton's laws of motion?
    • A. 

      The rate of change of momentum of an object is equal to the net force applied to the object

    • B. 

      What goes up must come down

    • C. 

      For any force, there always is an equal and opposite reaction force

    • D. 

      In the absence of a net force, an object moves with constant velocity

    • E. 

      All of the above are Newton's laws of motion


  • 66. 
    Newton's second law of motion tells us that the net force applied to an object equals its
    • A. 

      Momentum times velocity

    • B. 

      Mass times accerleration

    • C. 

      Mass times velocity

    • D. 

      Energy times accerleration

    • E. 

      Mass times energy


  • 67. 
    How does the Space Shuttle take off?
    • A. 

      It converts mass-energy to kinetic energy

    • B. 

      It achieves lift from its wings in the same way that airplanes do

    • C. 

      The hot rocket exhaust expands the air beneath the shuttle, propelling it forward

    • D. 

      Hot gas shoots out from the rocket and, by conservation of momentum, the shuttle moves in the opposite direction

    • E. 

      Its rocket engines push against the launch pad propelling the shuttle upwards


  • 68. 
    The movement of a pool ball, after being struck by a cue, is an example of
    • A. 

      Conservation of momentum

    • B. 

      Newton's first law of motion

    • C. 

      Newton's third law of motion

    • D. 

      The universal law of gravitation

    • E. 

      Newton's second law of motion


  • 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
    • A. 

      Newton's third law of motion

    • B. 

      The universal law of gravitation

    • C. 

      Newton's second law of motion

    • D. 

      Newton's first law of motion

    • E. 

      None of the above


  • 70. 
    Energy and power are different words for the same thing
    • A. 

      True

    • B. 

      False


  • 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
    • A. 

      True

    • B. 

      False


  • 72. 
    Grass is green because it absorbs green light, reflecting all other colors
    • A. 

      True

    • B. 

      False


  • 73. 
    The shorter the wavelength of light, the higher its frequency 
    • A. 

      True

    • B. 

      False


  • 74. 
    The greater the wavelength of light, the greater its energy
    • A. 

      True

    • B. 

      False


  • 75. 
    X rays, because they have more energy, travel through space faster than visible light
    • A. 

      True

    • B. 

      False


  • 76. 
    X rays are always more intense than radio waves
    • A. 

      True

    • B. 

      False


  • 77. 
    You are currently emitting electromagnetic waves
    • A. 

      True

    • B. 

      False


  • 78. 
    There are more atoms in a glass of water than stars in the observable universe
    • A. 

      True

    • B. 

      False


  • 79. 
    Atomic nuclei consist of photons and electrons
    • A. 

      True

    • B. 

      False


  • 80. 
    Electrons orbit an atomic nucleus like planets orbit the Sun
    • A. 

      True

    • B. 

      False


  • 81. 
    The atomic nuclei of the same element always have the same number of protons
    • A. 

      True

    • B. 

      False


  • 82. 
    The atomic nuclei of the same elements always have the same number of neutrons
    • A. 

      True

    • B. 

      False


  • 83. 
    The energy levels for electrons vary from one element to another
    • A. 

      True

    • B. 

      False


  • 84. 
    The energy levels of an element and its ion are the same 
    • A. 

      True

    • B. 

      False


  • 85. 
    Lines of a particular element appear at the same wavelength in both emission and absorption line spectra
    • A. 

      True

    • B. 

      False


  • 86. 
    Any object moving relative to Earth will have a Doppler shift
    • A. 

      True

    • B. 

      False


  • 87. 
    Emission lines from different ionization states of the same element appear in the same place in the spectrum
    • A. 

      True

    • B. 

      False


  • 88. 
    We see each other in the classroom right now because we
    • A. 

      Reflect visible light

    • B. 

      Emit thermal radiation

    • C. 

      Reflect infrared light

    • D. 

      Emit visible light

    • E. 

      Emit infrared light


  • 89. 
    Without telescopes or other aid, we can look up and see the Moon in the night sky because it
    • A. 

      Emits thermal radiation

    • B. 

      Reflects infrared light

    • C. 

      Emits visible light

    • D. 

      Reflects visible light

    • E. 

      Glows through radioactive decay


  • 90. 
    How many atoms fit across the period at the end of this sentence?
    • A. 

      Thousands

    • B. 

      Hundreds

    • C. 

      Billions

    • D. 

      Millions

    • E. 

      More than you could count in a lifetime


  • 91. 
    The frequency of a wave is
    • A. 

      The number of peaks passing by any point each second

    • B. 

      Equal to the speed of the wave divided by the wavelength of the wave

    • C. 

      Measured by cycles per second

    • D. 

      Measured in hertz (Hz)

    • E. 

      All of the above


  • 92. 
    The wavelength of a wave is
    • A. 

      The distance between two adjacent peaks of the wave

    • B. 

      Equal to the speed of the wave times the wave's fequency

    • C. 

      The distance between where the wave is emitted and where it is absorbed

    • D. 

      The distance between a peak of the wave and the next through

    • E. 

      How strong the wave is


  • 93. 
    How are wavelength, frequency, and energy related for photons of light?
    • A. 

      Longer wavelength means lower frequency and higher energy

    • B. 

      Longer wavelength means higher frequency and lower energy

    • C. 

      Longer wavelength means higher frequency and higher energy

    • D. 

      Longer wavelength means lower frequency and lower energy

    • E. 

      There is no simple relationship because different photons travel at different speeds


  • 94. 
    From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiation?
    • A. 

      Radio, X rays, visible light, ultraviolet, infrared, gamma rays

    • B. 

      Radio, infrared, visible light, ultraviolet, X rays, gamma rays

    • C. 

      Gamma rays, X rays, visible light, ultraviolet, infrared, radio

    • D. 

      Visible light, infrared, X rays, ultraviolet, gamma rays, radio

    • E. 

      Infrared, visible light, ultraviolet, X rays, gamma rays, radio


  • 95. 
    From shortest to longest wavelength, which of the following correctly orders the different categories of electromagnetic radiation?
    • A. 

      Radio, infrared, visible light, ultraviolet, X rays, gamma rays

    • B. 

      Gamma rays, X rays, visible light, ultraviolet, infrared, radio

    • C. 

      Infrared, visible light, ultraviolet, X rays, gamma rays, radio

    • D. 

      Gamma rays, X rays, ultraviolet, visible light, infrared, radio

    • E. 

      Visible light, infrared, X rays, ultraviolet, gamma rays, radio


  • 96. 
    Which of the following statements about X rays and radio waves is not true?
    • A. 

      X rays travel through space faster than radio waves

    • B. 

      X rays have shorter wavelengths than radio waves

    • C. 

      X rays and radio waves are both forms of light, or electromagnetic radiation

    • D. 

      X rays have higher frequency than radio waves

    • E. 

      X rays have higher energy than radio waves


  • 97. 
    Which of the following statements about X rays and radio waves is not true?
    • A. 

      X rays have shorter wavelengths than radio waves

    • B. 

      X rays and radio waves are both forms of light, or electromagnetic radiation

    • C. 

      Neither X rays nor radio waves can penetrate the earth's atmosphere

    • D. 

      X rays have higher energy than radio waves

    • E. 

      X rays have higher frequency than radio waves


  • 98. 
    Which is hotter?
    • A. 

      A blue star

    • B. 

      A red star

    • C. 

      A planet that emits only infrared light


  • 99. 
    What would happen inside the sun if a slight rise in core temperature led to a rapid rise in fusion energy?
    • A. 

      The core would expand and heat up slightly

    • B. 

      The core would expand and cool

    • C. 

      The sun would blow up like a hydrogen bomb


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