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Energy is never "used" it is always converted to another form of energy.Therefore, there must be different forms of energy which are:1. Chemical2. Electrical3. Elastic4. Nuclear5. Thermal6. Gravitational7. Kinetic8. Light(9. Sound)When a candle burns the chemical energy is converted into thermal or "heat" energy.
burning fuel
it is used to produce light, but it also produces heat as a byproduct
a burning candle is a light source due to the fire.
Yes, part of physics is studying the transfer of energy from one form to another. Within the candle is chemical potential energy (think about how the candle has to burn in scented candles), when a fire source comes near enough to the candle the chemical potential energy is transferred into thermal energy (heat energy) and radiant energy (visible light energy)
The earliest industries used heat/thermal energy to run their operations by burning feul or coal to generate the heat energy.
A heat wave is a source of thermal energy.
Geo = earth and thermal = heat. Yes it is a renewable source of energy. Steam engines can be run of this type of energy which will essentially be clean burning fuel.
Thermal energy comes from sun. It is a source of heat energy.
Which internal energy source produces heat by converting gravitational potential energy into thermal energy?
On Earth, the greatest source of thermal energy would be at the earth's core.