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Astronomy Chapter Four

12 Questions
Astronomy Quizzes & Trivia
Questions and Answers
  • 1. 
    If an object's velocity is doubled, its momentum is
    • A. 

      Halved

    • B. 

      Unchanged

    • C. 

      Doubled

    • D. 

      Quadrupled.

    • E. 

      Dependent on its acceleration.

  • 2. 
    Suppose an object is moving in a straight line at 50 mi/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. 

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

    • C. 

      Eventually slow down and come to a stop.

    • D. 

      Continue to move in a straight line forever if it is in space, but fall to the ground if it is on Earth.

  • 3. 
    How does the Space Shuttle take off?
    • A. 

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

    • B. 

      By converting mass-energy to kinetic energy

    • C. 

      By achieving lift from its wings in the same way that airplanes do

    • D. 

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

    • E. 

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

  • 4. 
    The movement of a pool ball, after being struck by a cue, is an example of
    • A. 

      Newton's first law of motion.

    • B. 

      Newton's second law of motion.

    • C. 

      Newton's third law of motion.

    • D. 

      The universal law of gravitation.

    • E. 

      Conservation of momentum.

  • 5. 
    What quantities does angular momentum depend upon?
    • A. 

      Mass and velocity

    • B. 

      Mass, velocity, and radius

    • C. 

      Force and radius

    • D. 

      Force, velocity, and radius

    • E. 

      Momentum and angular velocity

  • 6. 
    Considering Einstein's famous equation, E = mc2, which of the following statements is true?
    • A. 

      Mass can be turned into energy, but energy cannot be turned back into mass.

    • B. 

      It takes a large amount of mass to produce a small amount of energy.

    • C. 

      A small amount of mass can be turned into a large amount of energy.

    • D. 

      You can make mass into energy if you can accelerate the mass to the speed of light.

    • E. 

      One kilogram of mass represents 1 joule of energy.

  • 7. 
    Which of the following statements correctly describes the law of conservation of energy?
    • A. 

      An object always has the same amount of energy.

    • B. 

      Energy can change between many different forms, such as potential, kinetic, and thermal, but it is ultimately destroyed.

    • C. 

      The total quantity of energy in the universe never changes.

    • D. 

      The fact that you can fuse hydrogen into helium to produce energy means that helium can be turned into hydrogen to produce energy.

    • E. 

      It is not really possible for an object to gain or lose potential energy, because energy cannot be destroyed.

  • 8. 
    Where does the energy come from that your body uses to keep you alive?
    • A. 

      It is produced from the radiative energy of the Sun on your skin.

    • B. 

      It comes from the foods you eat.

    • C. 

      It comes from the water you drink.

    • D. 

      It is in the air that you breathe.

    • E. 

      It is created during the time that you rest or sleep.

  • 9. 
    According to the universal law of gravitation, the force due to gravity is
    • A. 

      Directly proportional to the square of the distance between objects.

    • B. 

      Inversely proportional to the square of the distance between objects.

    • C. 

      Directly proportional to the distance between objects.

    • D. 

      Inversely proportional to the distance between objects.

    • E. 

      Not dependent on the distance between objects.

  • 10. 
    According to the universal law of gravitation, if you double the masses of both attracting objects, then the gravitational force between them will
    • A. 

      Not change at all.

    • B. 

      Increase by a factor of 2.

    • C. 

      Decrease by a factor of 2.

    • D. 

      Increase by a factor of 4.

    • E. 

      Decrease by a factor of 4.

  • 11. 
    The allowed shapes for orbits under the force of gravity are
    • A. 

      Ellipses only.

    • B. 

      Ellipses and spirals.

    • C. 

      Ellipses, parabolas, and hyperbolas.

    • D. 

      Ellipses, spirals, and parabolas.

    • E. 

      Spirals, circles, and squares.

  • 12. 
    At which lunar phase(s) are tides least pronounced (e.g., the lowest high tides)?
    • A. 

      First quarter

    • B. 

      New moon

    • C. 

      Full moon

    • D. 

      Both new and full moons

    • E. 

      Both first and third quarters