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8 Cards in this Set

  • Front
  • Back
= useful energy output/ total energy input
thermal energy
energy associated with random motion of molecules
celsisu v. fahrenheit
cel: melting point at 0 degrees, boiling point at 100 degrees

fah: melting point at 32 degrees, boiling point at 212 degrees
temperature of a substance..
not measure of heat content

=average kinetic energy of its molecules resulting from their motions
absolute zero/ absolute temp scale
absolute zero= molecules have no [kinetic] energy

Kelvin scale
energy in automobile
chemical --> thermal --> mechanical
heat engine
converts thermal energy into mechanical energy

high temp heat, produced by burning fuel, partly converted to mechanical energy to do work, rest is injected into atmosphere (as low temp exhaust)
work/ heat energy