SHORT-ANSWER QUESTIONS (TYPE I): Answer in a sentence or two.
1. How is sound produced?
2. Distinguish between infrasonics and ultrasonics.
3. What do you mean by time period of a vibrating object?
1. What is the 'amplitude of a vibrating object?
5. What is the 'frequency' of a vibrating object? How is it related to shrillness of sound?
9. Why do women have shriller voices than men?
Answers
Answer:
1. Sound is produced when a body vibrates..The vibrating body causes the medium (air, solid, fluid, etc) around it to vibrate ....... Sound waves consists of areas of high and low pressures called as compressions and rarefactions respectively..
2. Infrasonic : ( i ) It has frequency less than the audible frequency range..
( ii ) It is less than 20 Hz
Ultrasonic: ( i ) It has frequency greater than the audible frequency range.
( ii ). More than 20000 Hz
3. The time taken for one complete vibration or ossillation is called as time period.
4. The maximum distance or displacement moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to the one-half length of vibrating path..
5. Frequency can be defined at the number of vibrations produced in an object in one second. The shrillness or the pitch of sound is directly related to the frequency of vibrating object.
6. Women have shorter vocal cords which can vibrate more quickly and produce a higher pitch, while in men longer vocal cords vibrate with low frequencies giving them deeper voice. Thus woman have high pitch and shriller voice compared to men......
please follow me please please please please
Explanation:
1. Sound is produced when an object vibrates, creating a pressure wave. This pressure wave causes particles in the surrounding medium (air, water, or solid) to have vibrational motion. ... The human ear detects sound waves when vibrating air particles vibrate small parts within the ear.
dear user don't abuse