What is the amplitude of a wave a measure of?

The size of the disturbance and the energy carried

In a transverse wave, the particles of the medium move:

Perpendicular to the wave's direction

Refraction, caused by a change in speed

The speed of light, $3.0 \times 10^8$ m/s

By encoding (modulating) the information onto a radio wave that the receiver decodes

12questions. Pick an answer and you'll see why right away.

A wave has a frequency of $10$ Hz and a wavelength of $2.0$ m. What is its speed?
At a fixed wave speed, if the frequency doubles, the wavelength:
What is the amplitude of a wave a measure of?
In a transverse wave, the particles of the medium move:
Which type of wave is sound in air?
What determines the loudness of a sound?
Sound travels fastest in which type of material?
An echo is produced by which wave behavior?
Light bends as it passes from air into glass. What is this behavior, and what causes it?
All electromagnetic waves in a vacuum travel at:
Which of these has the shortest wavelength and highest energy?
How does a radio station transmit sound information to a listener?