| A | B |
|---|
| the lighted part of the moon is growing larger | waxing |
| the lighted part of the moon is getting smaller | waning |
| the moon is fully illuminated | full moon |
| the moon cannot be seen | new moon |
| the moon appears half illuminated | quarter moon |
| the moon is less than half illuminated | crescent moom |
| the moon is more than half illuminated but not full | gibbous moon |
| the reason for moon phases | moon's revolution around Earth |
| the shadow of the Earth falls on teh moon | lunar eclipse |
| our view of the Sun is blocked by the moon | solar eclipse |
| special type of tide that occurs at full and new moon | spring tide |
| special type of tide that occurs at quarter moons | neap tide |
| the reason for tides | moon's gravity |
| the diameter of the moon compared to the diameter of Earth | one-fourth |
| gravity on the moon compared to gravity of Earth | one-sixth |
