| A | B |
|---|
| axis | line on which the earth spins |
| ellipse | elongated, closed curve (the way the earth orbits |
| equinox | when sun is directly above the equator |
| solstice | sun is greatest distance from equator |
| waxing moon | moon is getting bigger |
| waning moon | moon is getting smaller |
| solar eclipse | moon is between sun and earth blocking light |
| lunar eclipse | shadow of earth falls on the moon |
| gibbous | when 3/4 of moon is showing |
| impact basin | crater left behind when an object hits surface |
| maria | dark, flat region on moon |
| umbra | darkest portion of moon shadow |
| preumbra | lighter shadow on earth's surface |
| Apollo 11 | only manned spaceship that landed on moon |
