waves from the ocean are known as what kind of wave?

for a given wave, if the frequency doubles, the wavelength?

which is the best description of the cause of sound waves?

to improve sound quality, concert halls and theaters use curtains and other soft materials to........sound waves

radio waves, x-rays, and visible light are all forms of energy that travel as....

which part of the ear is the sound amplifier?

describe a mechanical wave?

which part of the ear acts as the sound collector?

A....... wave can travel in the absence of matter

the first part of the eye to receive, transmit, and refract light entering the eye is the......