science
Grade-4-
Easy
Question
When a longitudinal wave travels through a medium, the particles of the medium show compression and rarefaction. What happens when compression takes place in the medium?
- The density of the medium decreases
- The pressure of the medium decreases
- The molecules of the medium come closer to each other
- The wavelength of the wave increases
Hint:
Region of high pressure and high density.
The correct answer is: The molecules of the medium come closer to each other
- Compression are the regions of high pressure and high density.
- In which the molecules of the medium come closer to each other.
- So, the correct option is c.
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