Quiz
Gravity
4 years ago by
craniumfire
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  • Question 1
    30 seconds
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    Q. Most of the Universe is _____
    answer choices
    filled with planets
    filled with stars
    filled with gas and dust
    pretty empty
  • Question 2
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    Q. Gravity from an object _____
    answer choices
    stops at it's surface
    stops after about 10,000 km
    stops at the edge of the solar system
    goes on forever
  • Question 3
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    Q. Isaac Newton got into a bitter feud with _____
    answer choices
    Tycho Brahe
    Robert Hooke
    Galileo Galilei
    Johannes Kepler
  • Question 4
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    Q. You can think of it as "how much stuff makes up an object"
    answer choices
    size
    brightness
    mass
    density
  • Question 5
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    Q. Which term is defined as "how much mass is inside a given volume"?
    answer choices
    size
    brightness
    weight
    density
  • Question 6
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    Q. When the distance from an object is doubled, the force of gravity drops by a factor of _____
    answer choices
    2
    4
    10
    16
  • Question 7
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    Q. Go 3 times farther away and the force of gravity drops by _____
    answer choices
    3 times
    6 times
    9 times
    12 times
  • Question 8
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    Q. If there are no other forces acting on them, two objects with mass will _____
    answer choices
    repel
    stay where they are
    move uniformly toward each other
    accelerate toward each other
  • Question 9
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    Q. What can be described as "falling and missing the ground"?
    answer choices
    accelerating
    free-falling
    orbiting
    attaining escape velocity
  • Question 10
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    Q. A rock thrown hard enough sideways will orbit the Earth once every _____
    answer choices
    9 minutes
    90 minutes
    9 hours
    90 hours
  • Question 11
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    Q. Who realized that planetary orbits aren't necessarily circular?
    answer choices
    Isaac Newton
    Galileo Galilei
    Johannes Kepler
    Robert Hooke
  • Question 12
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    Q. The planets of our solar system have orbits that are _____
    answer choices
    circular
    ellipses
    parabolas
    hyperbolas
  • Question 13
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    Q. In order to break free of a planet's gravity, an object must be moving faster than the _____
    answer choices
    escape velocity
    getaway acceleration
    break-away pace
    liberation altitude
  • Question 14
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    Q. What is the escape velocity of the Earth?
    answer choices
    about 11 kilometers per second
    about 110 kilometers per second
    about 11 kilometers per hour
    about 110 kilometers per hour
  • Question 15
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    Q. For an object that misses the Earth but still passes us at escape velocity, the orbit is _____
    answer choices
    a circle
    an ellipse
    a parabola
    a hyperbola
  • Question 16
    30 seconds
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    Q. At the height of the space station, gravity, compared to that at Earth's surface, is _____
    answer choices
    about 0.9% as strong
    about 9% as strong
    about 49% as strong
    about 90% as strong
  • Question 17
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    Q. What does NASA like to call the free-fall condition while on the space station?
    answer choices
    microgravity
    microweight
    microdensity
    micromass
  • Question 18
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    Q. In space you have the same mass as you do on Earth, but no _____
    answer choices
    microgravity
    weight
    density
    pressure
  • Question 19
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    Q. Which particle has no mass, yet can be affected by gravity?
    answer choices
    proton
    electron
    neutron
    photon
  • Question 20
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    Q. An object moving along a path controlled by gravity is said to be _____
    answer choices
    in orbit
    in constant motion
    in uniform motion
    massless
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