Wednesday, June 27, 2012

Quiz on Chapter 1

1.  How many regions (constellations) is the sky divided into?
     A.  88
     B.  64
     C.  33
     D.  121

2.  True of False: The Earth rotates around an axis from the north pole to the south pole once a day?

3.  Why do we have seasons? (Bonus Question: How many degrees is it away from the perpendicular?)

4.  When are the two times that both days and nights are 12 hours long all over the world?
     A.  December 21 and June 21
     B.  March 21 and September 22
     C.  September 22 and June 21
     D.  December 21 and March 21

5.  How long does it take for the Moon make a complete orbit?
     A.  1 year
     B.  10 weeks
     C.  4 weeks
     D.  2 years

6.  In chronological order, list the Moon's phases.
      A.  New moon, waning crescent moon, first quarter moon, waning gibbous moon, full moon, waxing gibbous moon, third quarter moon, and waxing crescent moon.
     B.  New moon, waxing gibbous moon, first quarter moon, waxing crescent moon, full moon, waning crescent moon, third quarter moon, and waning gibbous moon.
     C.  New moon, waning gibbous moon, first quarter moon, waxing gibbous moon, full moon, waning crescent moon, third quarter moon, and waning crescent moon.
     D.  New moon, waxing crescent moon, first quarter moon, waxing gibbous moon, full moon, waning gibbous moon, third quarter moon, and waning crescent moon.

7.  What is the differences between a sidereal month and a synodic month?

8.  What is a lunar eclipse and when do they occur?

9.  What is a solar eclipse?

10.  Why isn't there an eclipse ever month?


Answers to Questions

1.  A
2.  True.
3.  Tilt. 23 1/2 degrees. 
4.  B
5.  C
6.  D
7.  A sidereal month is the amount of time it takes for the Moon to complete one full orbit of the Earth and is measured in respect to the stars.  A synodic month is the amount of time it takes the Moon to complete one cycle of phases and is measured in respect to the Sun.
8.  When the Moon passes through the Earth's shadow, and when the Moon is full.
9.  When the Earth passes through the Moon's shadow.
10.  Because the orbit is tilted and not in line.

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