| A | B |
|---|
| HYDROSPHERE | the total amount of water on a planet. |
| BIOSPHERE | made up of the parts of Earth where life exists. |
| ATOMOSPHERE | made of the layers of gases surrounding Earth |
| LITHOSPHERE | The Earth’s crust and upper portion of the mantle. |
| CRUST | The outermost, solid layer of the Earth. |
| CONTINENTAL CRUST | The part of Earth’s crust that makes up the landmasses |
| OCEANIC CRUST | he part of Earth’s crust that makes up the seafloor |
| MANTLE | The thickest layer of the Earth that lies between the crust and outer core |
| OUTER CORE | A liquid layer of the Earth located between the mantle and inner core. |
| INNER CORE | The solid, innermost layer of the Earth. |
| CONVECTION CURRENTS | The process in Earth’s mantle that scientists believe is driving the movement of the plates |
| TECTONIC PLATES | The broken sections of Earth’s crust. |
| MAGMA | Molten rock located beneath the Earth’s surface |
| LAVA | Molten rock that has reached the surface of the Earth through a weak spot in the crust. |
| FAULT | A fracture or break in the rocks that make up Earth’s crust |
| SUBDUCTION | The process that occurs when one plate sinks beneath another plate because it is more dense. |
