Midterm 1 - Quiz 1

12 Questions | Total Attempts: 37

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Midterm Quizzes & Trivia

This quiz was designed to simply go over every quiz question contained in quiz 1.


Questions and Answers
  • 1. 
    The distance from the Sun to each of the planets is often reported in AU where 1 AU is:
    • A. 

      The Sun's raduis.

    • B. 

      The Earth's radius.

    • C. 

      The radius of the Earth's orbit.

    • D. 

      The radius of the solar system.

    • E. 

      The distance to the nearest star(excluding the Sun).

  • 2. 
    The orbits of the planets are NOT:
    • A. 

      Almost perfect circles.

    • B. 

      With the Sun at their centers.

    • C. 

      Are almost parallel to one another(like sheets of paper on top of each other).

    • D. 

      All of about the same radius, 1AU.

    • E. 

      Suggestive of a common initial "origin"(or starting point) in the distant past.

  • 3. 
    The planets orbit the Sun because:
    • A. 

      The Sun is by far the most massive object in the solar system.

    • B. 

      The force of gravity attracts the planets towards the Sun.

    • C. 

      Planets are moving quickly(like NASA satellites that circle the Earth).

    • D. 

      All of the above.

    • E. 

      None of the above.

  • 4. 
    Because the planets move in elliptical(slightly squashed circular) orbits the distance to the Sun is reported as:
    • A. 

      The orbit semi-major axis (in AU)

    • B. 

      The orbit major axis (in AU)

    • C. 

      The orbit semi-minor (in AU)

    • D. 

      The orbit minor axis (in AU)

  • 5. 
    The (orbital) period of a planet is:
    • A. 

      The time for one complete rotation of the planet(on its axis).

    • B. 

      The time for one complete revolution of the planet around the Sun.

    • C. 

      The ratio of the time for one complete rotation of the planet(on its axis) to the time for one complete rotation of the Earth on its axis.

    • D. 

      The ratio of the time for one complete revolution of the planet around the Sun to the time for one complete revolution of the Earth around the Sun.

    • E. 

      None of the above.

  • 6. 
    The mass of a planet is determined using:
    • A. 

      The size of the planet and an average density based on the expected composition(of the planet).

    • B. 

      The size of the planet and the (universal) density of water.

    • C. 

      Newton's laws of motion and gravity, combined ith the (orbital) period of the planet.

    • D. 

      Newton's laws of motion and gravity, combined with the rotational period of the planet.

    • E. 

      Newton's laws of motion and gravity, combined with the motion of the planet's moons (that orbit the planet).

  • 7. 
    Which ordering of planets by INcreasing distance frm the Sun is NOT correct:
    • A. 

      Mercury, Earth, Mars, Jupiter

    • B. 

      Venus, Mars, Neptune, Uranus

    • C. 

      Earth, Mars, Saturn, Neptune

    • D. 

      Mercury, Venus, Mars, Saturn

    • E. 

      Jupiter, Saturn, Uranus, Neptune

  • 8. 
    What are the bodies between Mars and Jupiter (sometimes called the "failed planet"):
    • A. 

      Kuiper belt objects

    • B. 

      Ort cloud (objects)

    • C. 

      The asteroids

    • D. 

      The meteorites

    • E. 

      The comet cloud (objects)

  • 9. 
    Of all the planets, the Earth is UNIQUE in having:
    • A. 

      An average density greater than water.

    • B. 

      An atmosphere.

    • C. 

      Substantial oxygen in its atmosphere and liquid water on its surface.

    • D. 

      No rings.

    • E. 

      A changing visual appearence as seen from space.

  • 10. 
    The Earth has:
    • A. 

      Fewer moons than Mercury.

    • B. 

      Fewer moons than Venus.

    • C. 

      Fewer moons than Jupiter.

    • D. 

      More moons than Saturn.

    • E. 

      More moons than Uranus.

  • 11. 
    Viewed from the side (and at a great distance from the Sun) the planet orbits are:
    • A. 

      Randomly oriented.

    • B. 

      Lie almost in one plane.

    • C. 

      Lie very close to the "ecliptic".

    • D. 

      A and C

    • E. 

      B and C

  • 12. 
    Evidence that the planet orbits lie "almost in one plane" can be seen:
    • A. 

      Only from an observer in the distant fringes of the solar system.

    • B. 

      Never...as the planet orbits are randomly oriented.

    • C. 

      Even from Earth...as a near linear alignment of the planets in the sky.

    • D. 

      Even from Earth...but only using sophisticated mathematical models.