Across
- 1. a measure of the amount of stuff in an object, unit is kg
- 5. when a wave bounces off a surface such as light bouncing off a mirror
- 8. a type of energy that means stored energy
- 10. a measure of how hot or cold something is
- 12. the unit of energy
Down
- 2. how fast an object travels
- 3. a prefix meaning 1000. e.g 1000g in a ____gram
- 4. the force of gravity
- 6. a powerful source of light & heat powered by nuclear fusion. The Sun is an example
- 7. this planet has a gravitational field strength of 9.8 N/kg
- 9. the unit of force
- 11. the standard unit for speed