the energy an object has due to its position on a gravitational field
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elastic potential
the energy stored when an object is stretched or squashed
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electrical
the energy transferred by an electrical current
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kinetic
the energy of movement
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chemical
the energy available from a chemical reaction
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nuclear
the energy available from a nuclear reaction
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sound wave
the regular vibration of particles, usually in the air
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light waves
electromagnetic vibrations
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thermal
the energy from a hotter object/region to a cooler one
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efficiency
the greater percentage of energy that is usefully transformed, not wasted: efficiency = useful energy out / total energy in
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dissipation of energy
in energy transfers, some wasted energy eventually becomes heat, spreads out in surroundings and is almost impossible to get back to become useful again
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