| A | B |
|---|
| heat movers | refrigerators |
| currents | convection |
| insulator | reduces the flow of heat |
| a very good insulator | air |
| R-value | describes efficiency of insulator |
| combustion | burning of fuel |
| medium through which convection occurs. | fluid |
| internal combustion engines. | gasoline and diesel |
| Radiation. | transfer of energy without a medium |
| active solar heating | uses solar collectors. |
| radiant energy | from the sun. |
| heat mover | transfers heat from a place of low temperature to a place of high temperature. |
| heat engine. | changes heat to mechanical energy. |
| mechanical energy found in | tides |
| OTEC | ocean thermal energy conversion. |
| exhaust stroke | waste is released from the cylinder. |
| power stroke | combustion occurs and pushes the piston downward. |
| intake stroke | fuel-air mixture enters the cylinder. |
| compression stroke. | the piston reduce the volume of the cylinder. |
| has external combustion | steam engine. |
