Across
- 1. A component that gives out light
- 4. The force that keeps objects in orbit
- 6. The opposite of North
- 8. The maximum speed of free fall
- 12. Tells us how hard it is for electricity to flow
- 14. A thin piece of skin in the ear
- 15. This travels in straight lines
- 18. The unit of force
- 20. Can be used to take pictures of the earth
- 21. Its symbol is an A in a circle
Down
- 2. Equal and opposite forces are...
- 3. The force of gravity acting on an object
- 5. One end of a magnet
- 7. The opposite of series
- 9. Made from wire wrapped around an iron core
- 10. The closest planet to the sun
- 11. This is measured in Amps
- 13. Can turn a circuit on and off
- 16. The object at the centre of our solar system
- 17. This is measured in volts
- 19. The path of a satellite around the earth
- 22. The amount of stuff and object is made from