Across
- 1. speed in a given direction
- 8. a magnet that is made and is only temporary
- 9. the ends of a magnet
- 12. these waves go side to side. eg light waves
- 13. the height of the peak of a wave. Makes a sound louder/quieter
- 14. the distance of one complete wave cycle
- 15. this causes the force of weight on Earth
- 16. a magnet that cannot be switched off
Down
- 2. this wave goes forward and back. eg sound waves
- 3. Measured in Hertz, number of wavelengths going by per second
- 4. the name of the lines of force created by a magnet
- 5. worked out by distance/time
- 6. an invisible noncontact force
- 7. a quantity that has both size and direction
- 10. a quantity that has only size
- 11. an increase in velocity