1) how does reflection differ from diffraction?
a.) reflection is the only process in which the wave does not continue moving forward.
b.) reflection is the only process that involves a change in the wave
c.) reflection affects all types of mechanical waves, but refraction and diffraction do not.
d.)reflection is the only process that changes the direction.
2.) to what is amplitude related?
a.) the amount of energy carried by the wave
b.) the maximum displacement from the rest position
c.) neither of the above
d.) both the first and the second choices above

(1) The correct answer is A.

(2) The correct answer is D.

Explanation:

(1)

Reflection is the sending back of light from the surface without absorbing it. In the reflection phenomenon, the wave does not continue moving forward.

Diffraction is the bending of the light around the obstacle. In the diffraction phenomenon, the wave travels forward after striking around the obstacle.

Therefore, the correct answer is A.

(2)

Amplitude is the maximum displacement in the medium from the rest position.

The amount of energy is related to the amplitude. Amplitude is related to the amount of energy carried by the wave. Low energy wave is characterized by a low amplitude. High energy wave is characterized by a high amplitude.

Therefore, the correct option is D.

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