Sound Wave Basics

What does the amplitude of a waveform represent?

• The speed of the sound wave

• The volume of the sound

• The pitch of the sound

• The direction of the sound

What does the wavelength of a waveform represent?

• The volume of the sound

• The speed of the sound wave

• The pitch of the sound

• The direction of the sound

Which part of a sound wave is known as the peak?

• The lowest point of the wave

• The highest point of the wave

• The point where the wave crosses the equilibrium line

• The length of one complete wave cycle

Which part of a sound wave is known as the trough?

• The highest point of the wave

• The lowest point of the wave

• The point where the wave crosses the equilibrium line

• The length of one complete wave cycle

In which direction does sound travel from its source?

• In a straight line only

• In a straight line until it hits an obstacle, then it stops

• In all directions from the source

• Only vertically upwards

How does sound travel from one place to another?

• Through electromagnetic waves

• Through solid objects only

• Through vibrations in a medium such as air, water, or solids

• By increasing temperature in the medium

What determines if a sound is frequent or not frequent?

• The amplitude of the waveform

• The wavelength of the waveform

• The number of wave peaks per second

• The direction of the wave

Which of the following is NOT a characteristic of sound waves?

• They can travel through a vacuum

• They require a medium to travel

• They can be reflected

• They can be refracted

How does the amplitude of a sound wave relate to its energy?

• Higher amplitude means lower energy

• Amplitude has no relation to energy

• Higher amplitude means higher energy

• Only frequency determines the energy of a sound wave

Which of the following is NOT a property of waves?

• Wavelength

• Mass

• Frequency

• Amplitude