1. What occurs on Dec. 21, March 21, June 21, and Sept. 21? Whatspecific names are given to these dates?
2. Distinguish between the milky way and The Milky Way.
3. Every star (including the sun) we see by eye or telescopesbelongs to the MWG. What does this mean? What are the only thingswe observe not in our MWG?
4. About how many stars are in the MWG? About how many galaxiesare there?
5. What do we conclude about the shape of our MWG based on thefact we see the narrow milky band of light on very darknights?
6. Name some nearby galaxies.
7. Some comets return regularly; others never do. What’s differentin their orbits?
8. Here is a tide chart for some place along the ocean shore. Fillin the missing times or dates on the eight _______ linesbelow.

DATE             TIDE andTIME                                 NEXT TIDE and TIME

June 1 Very high at 4:00AM                      Very low at _______

                      Very high again at_______    Very low again at_______

.

.

_______ Mildly high at 9:30AM                   Mildly low at _______

                      Mildly high again at _______           Mildlylow again at _______

.

.

_______ Very high and very low tidesreturn