Work, Energy & Power: Energy Conversions

alex.examtime9373
Note by , created almost 6 years ago

This note outlines a few examples of common energy conversions. It can be used as a follow-on from the corresponding mind map "Work, Energy & Power" or as a stand alone resource. It is aimed at a Leaving Certificate student, or someone who wishes to further their knowledge of energy conversions.

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alex.examtime9373
Created by alex.examtime9373 almost 6 years ago
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Chemical to kinetic: Within muscle cells during the metabolism of ATP The chemical energy binding the ATP molecules together is released as the molecule breaks This causes the muscles to contract

Potential to kinetic: When an archer aims a bow and arrow at a target, the bow and the arrow contain potential energy When the arrow is let go, this potential energy is converted into kinetic energy

This diagram shows the conversion of potential energy (before the ball is kicked) to kinetic energy (while the ball is moving in the air) to potential energy (when the ball is motionless at the highest point of its course, before falling down)

Electric to heat and light: A light bulb produces light by passing current through a wire This causes the electrical energy to be converted to heat This then causes the metal to become white hot, thus producing light

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