- What occurs on Dec. 21, March 21, June 21, and Sept. 21? Whatspecific names are given to these dates?
- Distinguish between the milky way and The Milky Way.
- 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?
- About how many stars are in the MWG? About how many galaxiesare there?
- What do we conclude about the shape of our MWG based on thefact we see the narrow milky band of light on very darknights?
- Name some nearby galaxies.
- Some comets return regularly; others never do. What’s differentin their orbits?
- Here is a tide chart for some place along the ocean shore. Fillin the missing times or dates on the eight _______ linesbelow.
DATEÂ Â Â Â Â Â Â Â Â Â Â Â Â TIDE andTIMEÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â NEXT TIDE and TIME
June 1 Very high at 4:00AMÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Very low at _______
                      Very high again at_______   Very low again at_______
.
.
_______ Mildly high at 9:30AMÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Mildly low at _______
                      Mildly high again at _______          Mildlylow again at _______
.
.
_______ Very high and very low tidesreturn
