PS4.A Flashcard

Front

What happens to a wave when it is reflected?

Back

It changes its direction.

Front

What is refraction?

Back

Refraction is the bending of a wave as it passes from one medium to another, changing its speed and direction.

Front

How does wave speed vary in different media?

Back

Wave speed is slower in denser media.

Front

What happens to the speed of light when it moves from air to water?

Back

The speed of light decreases.

Front

What is the relationship between amplitude and energy in a wave?

Back

If the amplitude of a wave is doubled, the energy of the wave quadruples.

Front

Define wave speed.

Back

Wave speed is the distance a wave travels per unit of time.

Front

What is the formula for wave speed?

Back

Wave speed = frequency × wavelength.

Front

What is the principle of superposition?

Back

The principle of superposition states that when two or more waves overlap, the resulting wave displacement is the sum of the individual displacements.

Front

What is constructive interference?

Back

Constructive interference occurs when two waves meet in phase, resulting in a wave of greater amplitude.

Front

What is destructive interference?

Back

Destructive interference occurs when two waves meet out of phase, resulting in a wave of lesser amplitude.