Energy and its forms sheet3-mark answer frameWhat is energy? Name any five forms of energy, with one example of each.
How to lay out the answer. Follow the frame, then write it in your own words.
- 1 · Define. Energy is the capacity of a body to do work. Its SI unit is the joule.
- 2 · Mechanical energy. Kinetic or potential: a moving cricket ball, or water held up in a dam.
- 3 · Four more forms with examples.
- Heat: a gas stove flame
- Light: sunlight or a bulb
- Electrical: current running a fan
- Chemical: food or LPG
- 4 · Real-life link. Our muscles get their energy from the chemical energy of food.
- 5 · Close. So energy takes many forms, all measured in joules.
Scoring tip: Give each form with a clear everyday example. Five forms with examples earn full marks; names alone do not.
