| A | B |
| Moon | A natural object orbiting a planet |
| Crust | The outer layer of a planet |
| Magma | Molten rock underground |
| Lava | Molten rock above ground |
| Compound | Two or more elements chemically joined together |
| Mixture | More than one substance combined but not chemically joined |
| Metamorphic | Rock changed by extreme heat and pressure |
| Evaporation | Changing from liquid to gas - used to seperate a soluble solid from water |
| Core | The inner part of a planet |
| Sedimentary | Rock made up from layers of material deposited often by rivers |
| Igneous | Rock formed from cooling molten rock |
| Soluble | Can dissolve |
| Filtration | Separating insoluble material from a liquid |
| Planet | An object orbiting a star that dominates it's orbit |
| Sun | Star at the center of the solar system |