. Which of the following statements is true about sound? a. Sound is produced when objects collide. b. Sound is produced in different ways. c. Sound is produced through vibrations. d. All of the above.
The Correct Answer and Explanation is:
The correct answer is c. Sound is produced through vibrations.
Explanation:
Sound is a type of mechanical wave that travels through a medium (such as air, water, or solids) and is produced by the vibration of an object. When an object vibrates, it creates disturbances or compressions in the surrounding medium, which propagate as sound waves. The vibrations cause particles in the medium to move back and forth, creating areas of compression and rarefaction, which is how sound travels.
Now, let’s break down the options:
- a. Sound is produced when objects collide: While sound can indeed be produced by a collision (for example, when two objects bump into each other), this is not the only way sound can be produced. Sound can be produced through various means, such as by vibrating strings, air columns, or membranes.
- b. Sound is produced in different ways: This statement is partially true but still not as specific as option c. Sound can be produced in various ways (like by vibrating strings, air, or membranes), but the common underlying principle is vibration.
- c. Sound is produced through vibrations: This is the most accurate statement. Whether it’s a guitar string, a vocal cord, or the air molecules around a drum, the sound is always the result of vibrations. When an object vibrates, it causes the surrounding air particles to vibrate as well, creating sound waves that propagate through the air and reach our ears.
In summary, while sound can be produced in various ways, it is fundamentally the result of vibrations in a medium.
