Question 1:

What is sound reflection?

Explanation: The correct answer is C) The bouncing back of sound waves when they encounter a boundary. Sound reflection occurs when sound waves encounter a boundary and bounce back. The angle of incidence (the angle at which the sound wave approaches the boundary) is equal to the angle of reflection (the angle at which the sound wave bounces back).

Question 2:

What is sound refraction?

Explanation: The correct answer is B) The change in direction of sound waves as they pass through different mediums. Sound refraction occurs when sound waves pass from one medium to another with different acoustic properties, such as density or temperature. The change in the speed of sound in the different mediums causes the sound waves to bend or change direction.

Question 3:

What is sound diffraction?

Explanation: The correct answer is A) The bending of sound waves around obstacles or through openings. Sound diffraction occurs when sound waves encounter an obstacle or pass through an opening that is comparable in size to the wavelength of the sound waves. As sound waves encounter the edges of the obstacle or opening, they bend or spread out, resulting in changes in their direction and spreading of the sound wavefronts.

Question 4:

What is the phenomenon of sound focusing?

Explanation: The correct answer is C) The concentration of sound waves at a particular location. Sound focusing occurs when sound waves are directed or concentrated at a specific location. This can be achieved through the use of curved surfaces, such as concave reflectors or lenses, which redirect the sound waves and bring them to a focal point where the sound intensity is increased.

Question 5:

What is the phenomenon of sound scattering?

Explanation: The correct answer is D) Thephenomenon of sound scattering. Sound scattering occurs when sound waves encounter rough or irregular surfaces or objects that are smaller than the wavelength of the sound waves. As the sound waves interact with these surfaces or objects, they are redirected or scattered in various directions. This results in the sound waves spreading out and being dispersed, causing changes in the sound intensity and direction.