Physics

2. Waves that can travel through a vacuum and do not need a medium.
4. A part of a longitudinal wave where the density of particles is low.
6. The point of maximum positive displacement in a transverse wave.
9. A repeated back-and-forth motion around an equilibrium position.
10. The time taken for one complete wave or oscillation.
11. The distance between two repeating points of a wave.
13. Electromagnetic radiation with a shorter wavelength than visible violet light.
17. A type of electromagnetic wave used for cooking food and communication.

1. The number of waves or oscillations passing a point per second.
3. A type of wave where particles move perpendicular to the direction of the wave.
5. The lowest point of a transverse wave.
7. The lowest point of a wave below the equilibrium line.
8. Electromagnetic radiation with a longer wavelength than visible red light.
12. A wave where particles move parallel to the direction of wave travel.
14. The region in a longitudinal wave where particles are spread far apart.
15. The highest point of a transverse wave.
16. Waves that require a material medium to travel through.