Sound Waves

What is the sound that we actually hear?

• The vibration of molecules.

• The movement of air particles.

• The frequency of sound waves.

• The echo of sound in the environment.

What is amplitude in relation to sound waves?

• Amplitude refers to the frequency of the wave and is related to the pitch of the sound.

• Amplitude refers to the height of the wave and is related to the loudness of the sound.

• Amplitude is the speed at which the sound wave travels through a medium.

• Amplitude is the duration of the sound wave and is related to the length of the sound.

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

• 300 meters per second

• 343 meters per second

• 400 meters per second

• 350 meters per second

What is the role of the medium in sound wave propagation?

• The medium amplifies the sound waves, making them louder.

• The medium carries the sound waves, allowing them to travel from one place to another.

• The medium absorbs the sound waves, preventing them from traveling.

• The medium reflects the sound waves, causing echoes.

What does it mean for a wave to be longitudinal?

• In longitudinal waves, the disturbance of the wave travels in the same direction as the wave.

• In longitudinal waves, the disturbance of the wave travels perpendicular to the direction of the wave.

• Longitudinal waves are characterized by their high frequency and low amplitude.

• Longitudinal waves can only travel through solids.

What is a characteristic of mechanical waves?

• Mechanical waves can travel through a vacuum.

• Mechanical waves require a medium (solid, liquid, or gas) to travel.

• Mechanical waves are always longitudinal.

• Mechanical waves do not transfer energy.

What is an example of a longitudinal wave?

• Light waves

• Water waves

• Sound waves

• Radio waves

What happens to sound waves as they travel through different mediums?

• They disappear completely.

• They can change speed and direction when they travel through different mediums.

• They become inaudible.

• They only travel faster in denser mediums.

What is the Doppler effect?

• The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

• The Doppler effect is the increase in amplitude of a wave as it approaches an observer.

• The Doppler effect refers to the reflection of sound waves off surfaces.

• The Doppler effect is the phenomenon where light waves are absorbed by a medium.

What type of wave is a sound wave?

• Electromagnetic waves

• Mechanical waves

• Transverse waves

• Longitudinal waves