1.Wave motion that is parallel to the wave direction is described  as wave.

2. The time to make one complete cycle is .

3. The distance between successive crests of a wave is .

4. Wave motion that is perpendicular to wave direction describes a

        wave.

5. The number of waves that passes a given point in time is.

6. is a kind of wave that does not need a medium.

7. The highest point of a wave is called .

8. The unit for frequency is .

9. The part of a longitudinal wave where there are fewer particles is     

    called.

10. A region in a medium of longitudinal wave where molecules are 

      packed is called .​

Explanation:

A wave is a phenomenon that travels through a material medium without any permanent effect on the medium. It can be classified as mechanical or electromagnetic waves. And the two major types are transverse and longitudinal.

From the given question;

1. Longitudinal waves e.g sound waves, waves in a spring'

2. Frequency (number of cycles per second).

3. Wavelength of the wave. Measured in meters.

4. Transverse waves e.g light waves, water waves.

5. Wave speed.

6. Electromagnetic waves e.g ultraviolet waves, X-rays etc.

7. Amplitude.

8. Hertz.

9. Rarefaction

10. Compression

you would expect a sound wave to speed up. - b)

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