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1. which of the following is sound wave not possible to travel?
a. air

b. plant

c. water

d. outer space
2. which characteristic is said to be high - pitched?

a. high volume

b. low volume

c. high frequency

d. low frequency
3. which frequency is audible to the normal human hearing?

a. 5 Hz

b. 100 Hz

c. 30 000 Hz

d. 110 000 Hz


Sagot :

Answer:

1. D

2. C

3.A

Explanation:

Sound waves are travelling vibrations of particles in media such as air, water or metal. So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate.

The sensation of a frequency is commonly referred to as the pitch of a sound. A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave.