Across
- 3. When an object is lifted to a higher place, it is given gravitational ________ energy.
- 4. _______ is the rate of doing work.
- 7. Weight is the force due to the pull of ________.
- 8. The SI unit of weight is ________.
- 9. A machine is never 100% _________.
Down
- 1. The Principle of _________ of Energy states that energy can be changed from one form to another, but it cannot be created or destroyed.
- 2. Mass is measured in?
- 3. Mass is the amount of ______ (matter) in an object.
- 5. Work done (_____) = force (newtons) x distance moved (metres).
- 6. All moving objects have _______ energy.