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CH 7 Vocab
Scientific Method
| Term | Definition |
|---|---|
| Energy | the ability to do work or cause a change, 517 |
| Kinetic energy | the energy produced by motion, 517 |
| Potential energy | he energy that an object has because of its position or shape, 517 |
| Combustion | the transfer of heat directly between two objects that are in contact with each other, 459 |
| Energy efficiency | an expression of how much of the energy put into a system actually does useful work, 520 |
| Renewable Energy | an energy resource that is readily available or that can be replaced in a relatively short time; includes wind, moving water, sunlight, and wood, 520 |
| Nonrenewable energy | an energy resource that cannot be replaced in a relatively short time; includes fossil fuels and nuclear energy, 520 |
| Electricity | the energy produced by the flow and interaction of electrons, 520 |
| strip mining | type of mining in which layers of surface soil and rock are removed from large areas to expose theresource, 400, 524 |
| subsurface mining: | a type of mining in which vertical shafts are dug deep into the ground and networks of horizontal tunnels are dug or blasted out to follow deposits of a resource, 400, 524 |
| petroleum | a liquid fossil fuel made up mostly of hydrocarbons; the primary source of gasoline, 525 |
| petrochemical | a chemical compound derived from oil that is used to make plastics, detergents, and other products, 525 |
| oil sands | a deposit of moist sand and clay that can be mined to extract bitumen, an oil-rich hydrocarbon, 528 |
| oil shale | rock that contains hydrocarbons; can be burned directly or processed to extract liquid petroleum, 528 |
| methane hydrate | an icelike solid that consists of molecules of methane within a crystal network of water molecules; can be burned to release energy, 528 |
| acid drainage | a type of mining pollution that occurs when occurs when oxygen and rainwater react with newly exposed rock that contains iron sulfide., forming sulfuric acid that removes metals from rocks and leaches into groundwater or enters water bodies as runoff |
| energy coservation | reducing energy use to prolong the supply of fossil fuels |
| nuclear energy | the energy that holds protons and neutrons together in the nucleus of an atoms |
| nuclear fission | the conversion of the energy within an atoms nucleus to usable thermal energy by splitting apart atomic nuclei |
| nuclear reactor | a facility within a nuclear power plant that generates electricity through controlled nuclear fission |
| meltdown | the accidental melting of the uranium fuel rods inside the core of a nuclear reactor, causing the release of radiation |
| nuclear waste | a facility within a nuclear power plant that generates electricity through controlled nuclear fission |
| nuclear fuison | the conversion of the energy within an atoms nucleus to usable thermal energy by forcing together the small nuclei of lightweight elements under high temperature and pressure |