the sun
the earth's crust
and lava
Two categories of heat sources are natural heat sources and artificial heat sources. Natural heat sources include the sun, geothermal energy, and volcanic activity. Artificial heat sources include electric heaters, gas heaters, and oil heaters.
The two types of thermal energy sources are Geothermal and Thermal Energy
Some types of heat creating energy sources include fossil fuels (such as coal, oil, and natural gas), biomass, geothermal energy, nuclear fission, and solar thermal energy. These sources convert their respective forms of stored energy into heat that can be used for various applications, such as heating water or generating electricity.
Three types of heat transfer in your home are conduction, where heat moves through solid materials like walls and floors; convection, where heat circulates through fluids like air or water; and radiation, where heat is transferred through electromagnetic waves such as sunlight warming a room.
The four main sources of heat are the sun, geothermal energy from the Earth's core, friction from mechanical processes, and chemical reactions such as combustion.
solar, primordial, radioactive
heat salt and methane
Two categories of heat sources are natural heat sources and artificial heat sources. Natural heat sources include the sun, geothermal energy, and volcanic activity. Artificial heat sources include electric heaters, gas heaters, and oil heaters.
Spark, heat, & lightning.
They are not. They are substances which are sources of energy. When you burn them chemical energy is changed to heat and light.
There is Chemical, heat, and electrical burns.
The two types of thermal energy sources are Geothermal and Thermal Energy
The sun (it radiates heat), plutonium, and radium.
Main sources of internal heat are Magmatism and Radioactivity.
The sun, gravity, and heat. Not quite sure on heat, but the first two yes:)
All heat sources. Plus extreme cold sources cause burns.
The two main sources of heat within Earth are primordial heat left over from the planet's formation over 4.5 billion years ago, and radiogenic heat produced by the decay of radioactive isotopes in the mantle and crust. These heat sources drive geological processes such as mantle convection and plate tectonics.