D. Short answer type questions.
M. Name three characteristics of a sound.
2
Define frequency. How does it help in determining the pitch of a sound?
3.
How are pitch and frequency related to each other?
4.
Write the difference between pitch and loudness.
5.
What is the relation between loudness and amplitude of sound?
6.
What happens to the ear if we hear a sound over 140 dB?
7.
At how many decibels can a conversation be heard?
8. How does sound travel?
Answers
Answer:
cffssd एफसी बार की ने सेएस एस जीजैसी एच है अंक जी गांव सेंड डी हुएएफवीवीजी एच
Answer:
1 one The basic properties of sound are: pitch, loudness and tone.
2 The number of vibrations per second or frequency determines the pitch of a sound. Frequency is directly proportional to pitch. Higher the frequency, higher the pitch.
3 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. ... That is, two sound waves sound good when played together if one sound has twice the frequency of the other
4 Difference between Pitch and Loudness
The pitch of a sound is our ear's response to the frequency of sound. Whereas loudness depends on the energy of the wave. ... The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.
5 Amplitude determines the loudness of a wave. Greater the amplitude, greater is the loudness.
6 Noise above 140 decibels, like a loud explosion, can lead to acute hearing loss. If the sound waves damage the eardrum, the middle ear and/or the inner ear, it is known as an acoustic trauma. This kind of damage is usually temporary, but some hearing loss may be permanent.
7 60 dB
The scale used to measure noise as it is heard by the human ear is written as dB(A). Normal conversation is about 60 dB(A) to 65 dB(A). 85 dB(A) is the level at which you have to raise your voice, while at 90 dB(A) you will have to shout to make yourself heard
8 Sound vibrations travel in a wave pattern, and we call these vibrations sound waves. Sound waves move by vibrating objects and these objects vibrate other surrounding objects, carrying the sound along. ... Sound can move through the air, water, or solids, as long as there are particles to bounce off of.