Across
- 5. The number of crests of a wave that move past a given point in a given unit of time.
- 6. Electromagnetic radiation that can be detected by the human eye.
- 12. The flow of energy at the universal speed of light through free space or through a material medium in the form of the electric and magnetic fields that make up electromagnetic waves such as radio waves, visible light, and gamma rays.
- 14. A wave that is an oscillation of matter, and therefore transfers energy through a medium.
- 15. The change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.
- 16. The change in direction of a wave passing from one medium to another caused by its change in speed.
Down
- 1. A substance that makes possible the transfer of energy from one location to another, especially through waves.
- 2. A wave consisting of a periodic disturbance or vibration that takes place in the same direction as the advance of the wave.
- 3. A mechanical disturbance from a state of equilibrium that propagates through an elastic material medium.
- 4. A wave vibrating at right angles to the direction of its propagation.
- 7. The change in frequency or wavelength of a wave for an observer who is moving relative to the wave source.
- 8. The spreading of waves around obstacles.
- 9. Vibration generated by an earthquake, explosion, or similar energetic source and propagated within the Earth or along its surface.
- 10. The maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position.
- 11. The process in which two or more light, sound, or electromagnetic waves of the same frequency combine to reinforce or cancel each other, the amplitude of the resulting wave being equal to the sum of the amplitudes of the combining waves.
- 13. Distance between corresponding points of two consecutive waves.