Across
- 1. the substance that a wave travels through.
- 4. number of wavelengths that pass a given point in one second, measured in hertz.
- 6. mechanical causes the particles to move back and forth along the direction the wave travels.
- 7. distance between one point on a wave and the nearest point moving with the same speed and direction.
- 9. disturbance that moves through matter and space and carries energy.
- 10. mechanical wave that causes particles in matter to move at right angles to the direction the wave travels.
Down
- 2. waves that can travel through matter or empty space, includes radio waves, infrared waves, visible light waves, ultraviolet waves, x-rays, and gamma rays.
- 3. a wave that has to travel through a medium.
- 5. states that the angle the incoming wave makes with the normal to the reflecting service equals the angle the reflected wave makes with the surface.
- 8. ion change in direction of a wave when it changes speed as it travels from one material to another.