thermal energy: Quick Facts

Written and fact-checked by

The Information Architects of Encyclopaedia Britannica

Photos and Videos

Four containers of chocolate milk illustrate thermal energy differences. Two identical glasses show cold milk at 5 degreesC and hot milk at 70 degreesC, with the hot glass emitting steam. The cold glass has less thermal energy than the hot one. Another comparison shows a small glass and a large bottle, both with cold milk at 5 degreesC, where the larger bottle contains more thermal energy due to greater mass.

How energy can change from one form to another

See All Videos and Images →

Topics

geothermal energy heat internal energy energy combustion wind power solar energy steam power electric power tidal power nuclear energy hydraulic power waterpower chemical energy

Electric power lines against sunset (grid, power, wires, electrical, electricity)

Energy & Fossil Fuels