 | Term | Definition |
| |
intake stroke |
a mixture of gasoline and air enters a cylinder as the piston moves down |
| |
compression stroke |
the mixture is squeezed into a smaller space as the piston moves back up |
| |
ignition |
spark plug ignites mixture converting chemical energy to thermal energy making mixture a gas |
| |
power stroke |
as the heated gas expands pushing down the piston thus the piston moves the crankshaft |
| |
exhaust stroke |
crankshaft turns, and the piston is forced back up pushing exhaust gas out of the cylinder |
| |
thermostat |
heat-regulating device |
| |
bimetallic strip |
a strip consisting of two metals that bends with a rise in temperature |
| |
states |
liquid, solid, and gas |
| |
freezing point |
the temperature at which a liquid freezes |
| |
boiling point |
Temperature at which a liquid boils |
| |
melting point |
the temperature at which a solid becomes a liquid |
| |
refrigerator |
a device that uses outside energy source to transfer thermal energy from a cool area to a warm area |
| |
external combustion engine |
an engine powered by fuel burned outside the engine |
| |
internal combustion engine |
an engine that burns fuel inside cylinders within the engine |
| |
insulator |
a material that does not allow heat to move through it easily. |
| |
specific heat |
the heat required to raise the temperature of one gram of a substance one degree kelvin |
| |
conduction |
transfer of heat between particles within a substance |
| |
convection |
the transfer of heat by the movement of currents within a fluid |
| |
radiation |
the transfer of energy by electromagnetic waves |
| |
thermal expansion |
the expansion of matter when heated |
