Question

some types of waves require a (1) to travel through, rather than a vacuum. these waves are known as a (2), or a compression wave. an example of this kind of wave is (3), or a wave that has the ability to do work through vibrations. these types of waves have a pattern to them. regions of the wave where air particles are closest together are called (4), and areas where the air particles are furthest apart are called (5).

Explanation:

1. Waves that require a medium (like air, water) to travel are called longitudinal waves (also known as compression waves). Sound is a classic example of a longitudinal wave. In a longitudinal wave, regions where particles are closest are compressions and where they are farthest are rarefactions.

Answer:

1. medium
2. longitudinal wave
3. sound
4. compression
5. rarefaction