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Science Explosion 04
BJU 6th Science- Chapter 3
| Question | Answer |
|---|---|
| Natural resource | materials on earth that are available for our use |
| Renewable resource | can be replaced |
| Nonrenewable resource | cannot be replaced easily |
| Fossil fuel | formed from the remains of plants and animals buried quickly |
| Petroleum | |
| Crude oil | petroleum |
| Refinery | factory that separates crude oil into different products |
| Petrochemicals | chemicals produced from oil |
| Natural gas | fossil fuel found in a gaseous state |
| Coal | formed from plant material quickly buried in sediment |
| Uranium | mineral used to produce nuclear energy |
| Reservoir | holding area for water |
| Hydroelectric energy | produced as water flows and turns turbines |
| Geothermal energy | uses heat from the earth to produce steam |
| Wind energy | electrical energy from air movement |
| Solar energy | energy from sun |
| Mineral | solid substance found naturally in the earth’s surface (salt, sand, iron, gold) |
| Vein | concentrated areas of specific minerals |
| Ore | materials in a vein which contain usable amounts of metal |
| Smelting | process used to separate metal from ore |
| Malleable | soft and shapeable metal |
| Fallow | letting fields rest for a time |
| Ground cover | low growing crop planted on unused fields |
| Contour plowing | method used by farmers to reduce erosion |
| Hydrosphere | all of earth’s water (lakes, oceans, streams, rivers, underground water) |
| Water cycle | path the water travels as in goes from land to sky and back |
| Saline | salty |
| Phytoplankton | small plants that make up the first link in the ocean’s food chain |
| Ground water | rain water stored beneath the surface of the ground |
| Aquifer | layers of sand, gravel or bedrock that hold and move groundwater |
| Drawdown | lowered well water level caused by increased water usage |
| Humidity | amount of water vapor in the air |
| Ice sheet | layer of ice over the land (a glacier over flat land) |
| Ice shelf | ice layer that has moved from land out into the ocean and is floating in the water |
| Iceberg | piece of ice that breaks off from an ice shelf |
| Sea ice | frozen ocean water |
| Reduce | preserving our resources by limiting the amount you use |
| Reuse | preserve our resources by finding ways to use materials again, be creative |
| Recycle | conserve resources by taking products to a recycling center where they will be remade into other products |