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 the loudness of a sound depends on the amplitude of sound waves. Normal human hearing encompasses frequencies from 20 to 20,000 Hz, an impressive range. Sounds below 20 Hz are called infrasound, whereas those above 20,000 Hz are ultrasound. Neither is perceived by the ear, although infrasound can sometimes be felt as vibrations. The perception of frequency is called pitch. Test your knowledge about Sound Pitch and Loudness.
1. The amount of energy in a sound wave is called?
A. Echo
B. Pitch
C. Vibration
D. Amplitude
2. What if the sound has high amplitude then it also has .......?
A. Slow Sound
B. Loud Sound
C. Fast Echo
D. Slow Pitch
3. Frequency is measured in which unit?
A. Hertz(Hz)
B. Mole(mol)
C. Ampere(A)
D. Candela(cd)
4. When any vehicle is moving away from you, its horn seems what?
A. Same
B. Low pitched
C. High Pitched
D. No idea
5. What property of wave is represented by the letter "A"?
A. Trough
B. Wavelegth
C. Crest
D. Amplitude
6. The highest pitch is made by which instrument?
A. Horn
B. Trumpet
C. Tuba
D. Band
7. Through which medium does sound travel the slowest?
A. Solid
B. Gas
C. Liquid
D. Plastic
8. Among following due to which sound is caused.
A. Space
B. Vibration
C. People
D. Music
9. The number of vibrations per second is known as...
A. Frequency
B. Sound
C. Matter
D. Speech
10. What should be the length of a string to increase pitch?
A. Long
B. Short
C. Medium
D. Any length
11. Which of these would make a sound with the slowest vibration?
A. Flute
B. Harmonium
C. Drums
D. Whistle
12. Through which medium does the sound travels fastest?
A. Solid
B. Liquid
C. Gas
D. All of the above
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