| A | B |
|---|
| Earth | the third planet from the sun |
| Mercury | the planet nearest the sun |
| Pluto | was considered the ninth planet for many years |
| Saturn | the sixth planet from the sun |
| Venus | the second planet from the sun |
| Mars | the fourth planet from the sun |
| Neptune | the eighth planet from ths sun |
| Uranus | the seventh planet from the sun |
| Jupiter | the fifth planet from the sun |
| eon | the longest division of geologic time |
| Phanerozoic eon | the eon in which we live |
| amber | hardened tree sap |
