Heat, a form of energy, is partly potential energy and partly kinetic energy.

• Thermal energy popularly known as heat
• Chemical energy
• Electrical energy
• Radiant energy commonly known as light energy
• Nuclear energy
• Magnetic energy
• Elastic energy
• Sound Energy
• Gravitational energy

Some basic textbooks lump all these forms into two main groups;kinetic energy and potential energy. Other familiar types of energy (such as heat in most circumstances) are a varying mix of both potential and kinetic energy.

However, the above set of the possible forms of energy is not a closed set. Whenever physical scientists discover that certain phenomenon appears to violate the law of energy conservation, new forms can be added, as is the case with dark energy.

Notes and references

(kinetic) (potential) sl:Oblike energije