| A | B |
|---|
| anorthosite | highland |
| apollo | space program that sent man to moon |
| armstrong | first man to touch moon's surface |
| breccia | angularly fragmented rock |
| cresent | less than half of Earth side illuminated |
| ejecta | material blown out at crater impact |
| full moon | entire earth-facing side lit |
| geologist | studies planetary surface features |
| gibbous | more than half of earth side lit |
| gravity | 1/6 what is on Earth |
| highlands | bright areas on moon |
| location of Mission Control | Houston |
| igneous | rock formed by cooled and haredned magma |
| impact crater | circular depression in the ground |
| maria | dark plains on moon's surface |
