Electromagnetic Spectrum

4. Acronym used to remember visible colours on the spectrum.
6. Height of the wave above the resting line.
8. The power of the wave.
9. Invisible to human eyes but we can feel it as heat, has a wavelength just larger than red.
10. Long wavelengths are used for this.
12. Unit used to measure frequency.
15. The peak or highest point above the resting line of a wave.
17. The distance between two crests or troughs on a wave.
19. The straight line in the middle of a graph which happens when there is no energy.

1. Wave which moves backwards and forwards.
2. Visible colour with the smallest wavelength.
3. The largest type of wavelength on the EMS.
4. What makes stars and galaxies look different colours due to them moving closer or further or way. relative to the observer because it changes the wavelength.
5. The smallest type of wavelength on the EMS.
7. Frequency is how many of these happen in a second.
11. Invisible to human eyes and a form of electromagnetic radiation which has a wavelength just smaller than violet.
13. Electromagnetic spectrum acronym.
14. How many wave peaks pass a certain point after a certain amount of time.
16. Visible colour with the largest wavelength.
18. The lowest point below the resting line of a wave.