click below
click below
Normal Size Small Size show me how
Energy 6
LFH Energy Week 6
| Question | Answer |
|---|---|
| fossil fuel | an energy-rich substance such as petroleum, coal, or natural gas formed from the remains of organisms |
| global warming or climate change | the recent and ongoing rise in the global average temperature of Earth’s surface, caused by increasing concentrations of greenhouse gases |
| greenhouse gases | gases in Earth’s atmosphere that absorb infrared radiation and trap heat. Some are naturally occurring compounds (like water vapor, carbon dioxide, and methane) while others are human-made (like gases used for aerosols). |
| coal | a dark brown to black solid substance formed naturally from the compaction and hardening of fossilized plants and used as a fuel primarily for electricity generation |
| soot | a black, powdery substance chiefly composed of carbon, produced by incomplete combustion of coal, oil, wood or other materials |
| renewable resource | a resource that is never used up (e.g., solar energy) |
| convection | the movement of warm liquids or gases to cooler areas |
| conduction | the transfer of heat between objects that are in contact |
| radiation | the transfer of heat by electromagnetic waves |
| natural gas | a mixture of hydrocarbon gases that occurs naturally beneath the earth’s surface and is used as a fuel primarily for cooking and heating homes |
| non-renewable resource | a resource that is not replaceable after its use (e.g., coal, gas) |