Name: 

Astronomy 3 - Problem Set 1

1.  If sunlight takes 8 minutes to reach Earth, how long does
  moonlight take?

2.  As seen from your latitude, what is the angle between the north
  celestial pole and the norther horizon?  Between the southern
  horizon and the noon sun at the summer solstice?

3.  About how many days must elapse between the first quarter moon
  and the third quarter moon?

4.  If a planet has an average distance from the sun of 4 AU, what
  is its orbital period?

5.  Compare the force of gravity on the surface of the moon with the
  force of gravity at Earth's surface.

6. From what locations on Earth is the north celestial pole not visitible?
The sourth celestial pole?  The celestial equator?

7. How do the seasons in Earth's southern hemisphere differ from those in the
northern hemisphere?

8.  Suppose you lived on the Moon, near the center of the face that we
see from the Earth. a) During the phase of full moon, what phase could you
see for Earth?  Would it be daylight or dark where you live? b) On Earth,
we see the Moon rise and set each day.  If you lived on the Moon, would
you see Earth rise and set?  Why or why not?  c) What would you see when
people on Earth were experiencing either a solar or a lunar eclipse?