Waves

Front

What is a wave?

Back

A wave is a disturbance that transfers energy from one place to another without transferring matter.

Front

What is frequency?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).

Front

What is wavelength?

Back

Wavelength is the distance between two consecutive points of a wave that are in phase, such as crest to crest or trough to trough.

Front

What is wave speed?

Back

Wave speed is the distance a wave travels in a given amount of time, calculated as speed = frequency × wavelength.

Front

How do you calculate the speed of a wave?

Back

Speed = Frequency × Wavelength.

Front

If a wave has a frequency of 20 Hz and a wavelength of 4 m, what is its speed?

Back

80 m/s.

Front

What is the relationship between frequency and wavelength?

Back

As frequency increases, wavelength decreases, and vice versa, when wave speed is constant.

Front

What is the formula to find frequency if speed and wavelength are known?

Back

Frequency = Speed / Wavelength.

Front

If a wave travels at 300 m/s with a wavelength of 4 m, what is its frequency?

Back

75 Hz.

Front

What is the unit of measurement for wave speed?

Back

The unit of measurement for wave speed is meters per second (m/s).