| A | B |
|---|
| recycle | conversion of solid waste into new products using resources contained in the discarded materials |
| nonrenewable resource | cannot be replenished by natural means at the same rates that they are being consumed |
| renewable resource | Sustainable energy sources that cause relatively few environmental impacts and pose a low risk to humans |
| energy | primary sources are 1. fossil fuels (coal, oil, gas); 2. nuclear (fission and fusion); and 3. renewables (solar, wind, geothermal, biomass, hydro |
| fossil fuel | formed from things that lived millions of years ago. |
| smog | Fog that has become mixed with smoke to form pollution |
| conservation | to more efficiently use energy and resources. |
| coal | black rock which can be burned to produce energy |
| hydrocarbon | A hydrocarbon is a compound that contains only hydrogen and carbon |
| geothermal energy | Use of heat of the earth from hot springs, geysers, vents. |
| solar energy | type of energy provided by sunlight |
| nuclear energy | type of energy provided by fission of Uranium 235 |
| greenhouse gas | gas that insulates the atmosphere |
| petroleum | oil that comes from rocks |
| peat | thick layers of dead plants in swamps |
| fission | atomic nuclear process which involve the splitting of nuclei that releases energy |
| fusion | Atomic nuclear processes which involve the fusing of nuclei with an accompanying release of energy |
| insulation | material that slows heat loss. |
| solar collector | greenhouse |
| wind power | used by windmills |
