Guys please Do solve this
Answers
Answer:
True / false -
1. false
2. false
3. true
4. true
5. true
Qnas -
1) the loudness of sound depends on its amplitude .If the amplitude is higher , the sound produced will be loud . If the amplitude is smaller , the sound produced will be weak .
2) Pitch or shrillness is the quality that makes it possible to compare sounds as "higher" or "lower" .
3) Loudness is proportional to the square of amplitude which means if the amplitude is doubled , the loudness will increase four times .
4) The two main properties of sound are frequency and amplitude. The frequency of the sound waves determines the pitch of the sound. The amplitude of sound determines the loudness.
5) Sound is a form of energy produced by vibrations that travel through air or any another medium and can he heard when reaches our ears .
6) The unit of loudness is decibel ( dB ).
7) An ultrasound is an imaging test that uses sound waves to create a picture (also known as a sonogram) of organs, tissues, and other structures inside the body.
8) Noise pollution, also known as environmental noise or sound pollution, is the propagation of noise with ranging impacts on the activity of human or animal life, most of them harmful to a degree. The source of outdoor noise worldwide is mainly caused by machines, transport, and propagation systems.
9) The sound which is unpleasant to our ears is known as noise . It can cause many health problems .
10) Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. There are many different types of air pollutants, such as gases, particulates, and biological molecules.