What are Waves?
Pages 8-12
1. A rhythmic disturbance that carries energy but not matter.
2. A type of wave that can travel only through matter.
3. Material through which a wave travels. This can be a solid, liquid, or a gas.
4. Energy is transferred from particle to particle in the medium.
5. Transverse waves and compressional waves; compressional waves are sometimes
called longitudinal waves.
6. A transverse wave moves causing the matter in the medium to move up and down
or back and forth at right angles to the direction the wave travels.
7. The high points in a transverse wave are called crests and the low points are called
troughs.
8. Matter in the medium moves forward and backward along the same direction that
the wave travels.
9. A sound wave is an example of a compressional wave.
10. In a compressional wave, particles are squeezed together in compressions and are
farther apart in rarefactions.
11. Waves that can travel through matter or empty space (a vacuum).
12. Electromagnetic waves can travel in matter or in space.
13. The energy carried by electromagnetic waves is called radiant energy.
14. Page 12, section 1 review:
2) It requires a medium through which to travel, and there is no medium
in space.
3)
Transverse
Waves
Cause vibrations at
right angles to the
wave’s direction.
Compressional
Waves
Both carry energy
Cause vibrations
in the direction of
wave movement.
4)
Mechanical Waves
Use matter to transmit energy.
Electromagnetic Waves
Do not require matter to transmit
energy
5) The wave causes molecules of matter to bump neighboring molecules.