Astronomy set 1

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Astronomy set 1
2015-02-23 21:46:36
Astronomy set
exam 1
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  1. If our year were twice as long (that is, if Earth took twice as many
    days to complete each orbit around the Sun), but Earth's rotation period and
    axis tilt were unchanged, then
    • the four seasons would each be
    • twice as long as they are now
  2. It's 6AM and the Moon is at its highest point
    in your sky (crossing the meridian). What is the Moon's phase?
    third quarter
  3. A typical galaxy is a ________.
    • collection of a few hundred
    • million to a trillion or more stars, bound together by gravity
  4. In Copernicus' heliocentric model, the
    ancient mystery of the planets is explained by retrograde motion which
    • only apparent as the Earth passes
    • other planets in its orbit around the Sun.
  5. Lunar eclipses can occur only during a
    full moon
  6. If we have a new moon today, when we will have the next full moon?
    In about 2 weeks
  7. Check ALL that are true of a scientific
    • 1. A scientific theory would have
    • been called a Law in Newton's time.

    • 2. A scientific theory has passed all
    • crucial tests of its validity.

    • 3. A scientific theory might still be
    • proven wrong.
  8. Which of the following is not true about a
    scientific theory?
    • 1. A theory must explain a wide range
    • of observations or experiments. 

    • 2. Even the strongest theories can
    • never be proved true beyond all doubt. 

    • 3. A theory is essentially an
    • educated guess.