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Ecology Chapter 5
Ecology Chapter 5
24
Science
7th Grade
07/03/2010

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Term
natural resource
Definition
any natural material that is used by humans
Term
renewable resource
Definition
a natural resource that can be replaced at the same rate at which the resource is consumed
Term
nonrenewable resource
Definition
a resource that forms at a rate that is much slower than the rate at which it is consumed
Term
recycling
Definition
the process of recovering valuable or useful materials from waste or scrap; the process of reusing some items
Term
natural gas
Definition
a mixture of gaseous hydrocarbons located under the surface of the Earth, often near petroleum deposits; used as fuel
Term
petroleum
Definition
a liquid mixture of complex hydrocarbon compounds; used widely as a fuel source
Term
fossil fuel
Definition
a nonrenewable energy resource formed from the remains of organisms that lived long ago; examples include oil, coal, and natural gas
Term
coal
Definition
a fossil fuel that forms underground from partially decomposed plant material
Term
acid precipitation
Definition
precipitation, such as rain, sleet, or snow, that contains a high concentration of acids, often because of the pollution of the atmosphere
Term
smog
Definition
photochemical haze that forms when sunlight acts on industrial pollutants and burning fuels
Term
nuclear energy
Definition
the energy released by a fission or fusion reaction; the binding energy of the atomic nucleus
Term
chemical energy
Definition
the energy released when a chemical compound reacts to produce new compounds
Term
solar energy
Definition
the energy received by the Earth from the sun in the form of radiation
Term
wind power
Definition
the use of a windmill to drive an electric generator
Term
hydroelectric energy
Definition
electrical energy produced by falling water
Term
biomass
Definition
organic matter that can be a source of energy
Term
gasohol
Definition
a mixture of gasoline and alcohol that is used as a fuel
Term
geothermal energy
Definition
the energy produced by heat within the Earth
Term
hydrocarbon
Definition
Organic compound that contains carbon and hydrogen- both petroleum and natural gas are made from these
Term
Permeable rocks
Definition
Rocks that fluids can move through, like petroleum and gas
Term
strip mining
Definition
The process by which soil and rock are stripped from the earths surface to expose underlying coal that is to be mined
Term
Fission
Definition
A process in which the nuclei of radioactive atoms are split into 2 or more smaller nuclei
Term
Fusion
Definition
The joining of 2 or more nuclei to form a larger nucleus
Term
Solar panels
Definition
Large panels made up of many solar cells wired together- they provide electrical energy used in buildings
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