Across
- 4. How many waves happen per second
- 7. Any object/substance that give off their own light
- 8. Particles in the medium move at the right angles to the direction of wave
- 9. Move in the same direction as the wave
- 10. How long it takes for the wave to occur
Down
- 1. Distance from the point of 1 wave to the same point in the next wave
- 2. Distance from middle point of wave to the highest point of wave
- 3. The substance the wave can travel through
- 5. Can be reflected from the surface of the substance
- 6. A sound that is high frequency to the point humans can’t hear it