Unit 7 Waves (2024)

Front

What is destructive interference?

Back

Destructive interference occurs when two waves align crest to trough, resulting in a smaller or zero-amplitude wave.

Front

What is the formula to calculate wave speed?

Back

Wave speed (v) = frequency (f) × wavelength (λ).

Front

If a wave has a frequency of 2 Hz and a wavelength of 7 m, what is its speed?

Back

14 m/s.

Front

What is amplitude in the context of waves?

Back

Amplitude is the maximum displacement of points on a wave from its rest position.

Front

What is the amplitude of a wave if it reaches a maximum height of 3 units?

Back

3 units.

Front

What is a wave?

Back

A wave is a disturbance that transfers energy from one place to another.

Front

What is the difference between constructive and destructive interference?

Back

Constructive interference occurs when waves align crest to crest, increasing amplitude; destructive interference occurs when waves align crest to trough, decreasing amplitude.

Front

True or False: Waves with a greater amplitude have less energy than waves with a lower amplitude.

Back

False.

Front

What is the medium in the context of waves?

Back

The medium is the substance through which a wave travels.

Front

What is reflection in wave behavior?

Back

Reflection is the bouncing back of a wave when it hits a barrier.