- Energy exists in different forms
- Energy can change from one form to another
- When an object falls and gains energy its gravitational potential energy decreases and its kinetic energy increases
- Energy cannot be created or destroyed
Different forms of energy:
- Chemical energy (stored in fuel and released when chemical reactions take place)
- Kinetic energy (energy of a moving object)
- GPE (the energy of an object due to its position)
- Elastic potential energy (the energy stored in a springy object when we stretch or squash it)
- Electric energy (energy transferred by an electrical current)
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