| Question | Answer |
|---|---|
| aquifer | Layers of sand, gravel or bedrock that hold and move groundwater |
| coal | Formed from plant material quickly buried in sediment |
| crude oil | Petroleum |
| geothermal energy | Heat from the earth produces steam to produce energy |
| ground water | Rain water stored beneath the surface of the ground |
| humidity | Amount of water vapor in the air |
| hydroelectric energy | Energy produced as water flows and turns turbines |
| hydrosphere | All of earth’s water (lakes, oceans, streams, rivers, underground water) |
| malleable | Soft and shapeable metal |
| mineral | Solid substance found naturally in the earth’s surface (salt, sand, iron, gold) |
| natural gas | Fossil fuel found in a gaseous state |
| natural resources | Materials on earth that are available for our use |
| nuclear energy | Energy dependent on uranium. |
| ore | Materials in a vein which contain usable amounts of metal |
| petrochemicals | Chemicals produced from oil |
| petroleum | "liquid rock" – a liquid form of fossil fuel |
| phytoplankton | Small plants that make up the first link in the ocean’s food chain |
| recycle | Conserve resources by taking products to a recycling center where they will be remade into other products |
| reduce | Preserving our resources by limiting the amount you use |
| refinery | Factory that separates crude oil into different products |
| reservoir | Holding area for water |
| reuse | Preserve our resources by finding ways to use materials again, be creative |
| smelting | Process used to separate metal from ore |
| solar energy | Energy from sun |
| uranium | Mineral used to produce nuclear energy |
| vein | Concentrated areas of specific minerals |
| Wind energy | Air movements |
