| A | B |
|---|
| biosphere | All living things can be found here |
| meteorology | The study of the atmosphere, climate and weather |
| geology | The study of the Earth |
| oceanography | the study of the ocean, its composition and movement |
| geosphere | composed of the core, mantle, and crust |
| hydrosphere | the water portion of Earth |
| astronomy | the study of the universe |
| atmosphere | gaseous envelope around the Earth |
| Rock | A naturally occurring, solid mass of mineral |
| Mineral | Any naturally occurring inorganic solid that possesses a crystalline structure |
| Crystals | Atoms arranged in an orderly, repetitive manner |
| Inorganic | Found naturally in the ground |
| Properties | Luster, streak and hardness |
| Silicates | Make up 98% of the Earth's crust |
| Nonsilicates | Include carbonates, sulfates, halides and oxides |
