Electromagnetic Spectrum

7. Height of the wave above the resting line.
9. shift What makes stars and galaxies look different colours due to them moving closer or further away relative to the observer because it changes the wavelength of the light coming from it.
10. Unit used to measure frequency.
13. Visible colour with the largest wavelength.
14. Frequency is how many of these happen in a second.
15. Wave which moves backwards and forwards.
16. The lowest point below the resting line of a wave.
18. Acronym used to remember visible colours on the spectrum.
19. The peak or highest point above the resting line of a wave.

1. Invisible to human eyes but we can feel it as heat, has a wavelength just larger than red.
2. How many wave peaks pass a certain point after a certain amount of time.
3. Long wavelengths are used for this.
4. The distance between two crests or troughs on a wave.
5. Electromagnetic spectrum acronym.
6. state The straight line in the middle of a graph which happens when there is no energy.
8. The power of the wave.
9. wave The largest type of wavelength on the EMS.
11. Visible colour with the smallest wavelength.
12. Invisible to human eyes and a form of electromagnetic radiation which has a wavelength just smaller than violet.
17. ray The smallest type of wavelength on the EMS.