Which statement best describes the motion of air particles in a sound wave? A. They move all around the wave.
B. They move in the direction opposite to that of the wave.
C. They vibrate at right angles to the wave.
D. They vibrate parallel to the wave.

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

the answer would be a

do you have a formula possibly

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!