Topic 4 Waves

5. The maximum displacement of a particle from equilibrium position.
6. The number of oscillations/waves produced/observed per second.
7. The term used to describe the movement of an object from a position "to and from" back to its original position.
11. A group of waves that are produced by oscillating electric and magnetic fields.
12. Change of direction of propagation due to entering a new medium (except when angle of incidence is 0).
14. A condition of an oscillating system achieved when the frequency of the driving force is exactly equal to the natural frequency of the system being oscillated
15. wave The direction of the particle displacement is parallel to the direction the wave travels.

1. The 'material' through which a wave travels (can also be vacuum for em waves)
2. A wave bouncing back from a surface it meets.
3. wave The direction of particle displacement is perpendicular to the direction the wave travels.
4. Motion where the acceleration of the particle is always directly proportional to and in the opposite direction to the displacement of the particle.
8. The time taken for one complete oscillation
9. Term used to describe region where particles are closer together than they would be in their normal equilibrium state. Opposite state: Expansion or Rarefaction.
10. Radiant energy inciding on a perpendicular area, per unit of area
13. The process by which energy is removed from an oscillating system