- The 6h 20 min between low and high tide is caused by what?
- The 7 days between very large to mild CHANGES in tides iscaused by what?
- We see very large tide changes when the moon is in what twophases?             Wesee mild tide changes when the moon is in what two phases?
- The unlit side of the moon ought to be totally black and beunseen in any phase. However, often it can be dimly seen. Why? Howdoes it get any light atall?                   Â
5. Nebulas were mysterious fuzzypatches of light in space seen in a dark sky. Today we know theseare four different things. List them.
6. Put these numbers in order, largestto smallest:Â Â 105, 1014 ,101 , 10-1 , 10-8,100
7. Put these distances in order: ly,megamile, pc, AU. How many km in 1 ly & 1 AU?
8. Put these 14 objects in rough sizeplace (largest to smallest) according to their actual sizes, not aswe see them: star (sun), major planet, comet head, meteor, galaxy,universe, a moon, asteroid, comet tail, solar system, local group,minor planet, space out to a nearby star, meteorite, an entireconstellation
9. What is the moon illusion and why is it called anillusion?
