| Question | Answer |
| the mass of air surrounding the Earth | Atmosphere |
All of the water on earth. | hydrosphere
| the part of earth where life exists | biosphere
| feature of Earth's surface (examples: mountains, valley, hill, plain, mesa) | landform
| elevation of a land surface | relief
| Large movable plates under the Earth's surface. | tectonic plates
| a crack in the earth's crust | fault
| violent and sudden movement of the earth's crust | earthquake
| A giant wave usually caused by an earthquake beneath the ocean floor. | tsunami
| a weak spot in the crust where molten material, or magma, comes to the surface | volcano
| A circle of volcanoes surrounding the Pacific Ocean. | ring of fire
| The breaking down of rocks and other materials on the Earth's surface | weathering.
| A landform made of sediment that is deposited where a river flows into an ocean or lake | delta
| a slowly moving mass of ice | glacier |
