| A | B |
|---|
| Debris | The remains of something that was destroyed |
| Molten | Melted into a liquid |
| Crust | The outer layer of the earth |
| Continental crust | The lighter crust that makes up the continents |
| Oceanic crust | The heavier crust that makes up the ocean floor |
| Mantle | The layer of the earth that surrounds the core |
| Core | The hot center of the earth |
| Vent | An opening in the earth that lets out gases and other materials |
| Eruption | An explosion from beneath the earth's surface |
| Toxic | Poisonous |
| Meteorite | A piece of rock that hits the surface of a planet or moon after traveling through space |
| Comet | A ball of ice, rock, frozen gases, and dust that orbits the sun |
| Bacteria | The simplest organisms that carry out all basic life activities |
| Extremeophile | A tiny organism that lives in one of the earths harshest environments |
| Cyanobacteria | The first organism on Earth to use sunlight to make their own food; also known as blue-green algae |
