Thermal energy is energy related to heat. It is found in all matter because particles are always moving. Objects with higher temperatures have more thermal energy. This type of energy is present in many environments.

Thermal energy is found in natural systems such as the Sun and Earth, and in human-made systems like heating devices. It is measured in units such as joules. It is used in processes such as heating and cooling.

Thermal energy is part of how temperature and heat are described in science. It exists in all materials and environments. This form of energy is present in daily life and natural systems.