Lesson 1: Nature of Waves

What is the primary function of waves?

In a transverse wave, what is the direction of the disturbance relative to the direction of travel?

Which type of wave does not require a medium to travel through?

What determines the speed of a wave on a string?

What is the characteristic of a wave that remains constant when it travels from one medium to another?

What type of wave is a light wave?

What happens to the speed of a wave on a string if the tension is increased?

How does the wavelength of a sound wave change when its frequency increases?

What type of wave is sound?

What is the period of a wave with a frequency of 25 Hz?

What is the frequency range of sound that a healthy young person can hear?

What is the speed of sound in air at room temperature?

What is a characteristic of periodic waves?

What is the wavelength of a transverse wave on a string with a speed of 150 m/s and a frequency of 30 Hz?

How does the speed of a particle in a wave moving along a string compare to the wave speed?

Through which of the following can sound not travel?

A common feature of all waves is that they carry energy from place to place.
In a transverse wave, the disturbance occurs perpendicular to the direction of travel of the wave.
Light waves are an example of transverse waves.
In a longitudinal wave, the disturbance occurs parallel to the direction of travel of the wave.
Sound waves are an example of longitudinal waves.

The frequency of a wave remains constant when it travels from one medium to another.
When the frequency of a sound wave increases, its wavelength decreases.
The period of a wave is the time taken to complete one cycle, and it is inversely proportional to the frequency.
Periodic waves have repeating patterns, and they consist of cycles produced over and over again.

The speed of a wave on a string is determined by the tension and linear density of the string.
If the tension in a string is increased, the speed of the wave on the string will also increase.
The formula to calculate the speed of a wave on a string is √(T/μ), where T is the tension and μ is the linear density.

Sound waves are longitudinal waves.
Sound waves cannot travel through a vacuum.
The frequency range of sound that a healthy young person can hear is between 20 Hz and 20 kHz.
The speed of sound in air at room temperature is approximately 343 m/s.