LDI-Science Set 3
Terms
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- Anthracite
- a hard, black rock; the fourth stage of coal formation
- Coal
- a brownish-black sedimentary rock that is burned for fuel
- Natural resources
- any of the useful minerals and other materials that people take from the Earth
- Reusable resources
- a natural resource that is renewed by natural cycles and can be used more than once; an inexhaustible resource
- Lignite
- a soft, brown rock; the second stage of coal formation
- Fossil fuels
- a fuel formed from the remains of once-living organisms
- Renewable resources
- a resource that is replaced as it is used
- Peat
- a soft, brown material made up of partly decayed plants; first stage of coal formation
- Natural gas
- a gas, methane, usually found with petroleum
- Bitumen
- a fairly hard, dark brown or black rock; the third stage of coal formation
- Recycle
- to recover a resource from an item and use the recovered resource to make a new item
- Fossils
- the remains or traces of past life found in sedimentary rock
- Non-renewable resources
- a resource that cannot be readily replaced once it is used