Sound Waves

What is the relationship between frequency and pitch?

• Higher frequency results in a lower pitch.

• Higher frequency results in a higher pitch, while lower frequency results in a lower pitch.

• Frequency has no effect on pitch.

• Lower frequency results in a higher pitch.

What is the role of the cochlea in hearing?

• It amplifies sound waves before they reach the eardrum.

• It converts sound vibrations into electrical signals for the brain to interpret.

• It filters out background noise to enhance hearing.

• It regulates the balance and spatial orientation of the body.

What is a medium in the context of sound waves?

• A type of sound wave that is inaudible

• A substance through which sound waves travel, such as air, water, or solids.

• A device used to amplify sound waves

• A measurement of sound frequency

What is the difference between infrasound and ultrasound?

• Infrasound is sound above 20,000 Hz, while ultrasound is sound below 20 Hz.

• Infrasound is sound below 20 Hz, while ultrasound is sound above 20,000 Hz.

• Infrasound and ultrasound are both sounds within the human hearing range.

• Infrasound is a type of ultrasound used in medical imaging.

What is the source of a sound wave?

• Vibration

• Electricity

• Magnetism

• Pressure

This is the unit used to measure the volume of a sound.

• Decibel

• Hertz

• Watt

• Joule

What is resonance in sound?

• The amplification of sound when the frequency of a sound wave matches the natural frequency of an object.

• The reduction of sound when the frequency of a sound wave is lower than the natural frequency of an object.

• The distortion of sound when the frequency of a sound wave is altered by an external force.

• The complete silence of sound when the frequency of a sound wave is zero.

Sound waves are what type of wave?

• Transverse

• Longitudinal

• Surface

• Electromagnetic

What is an echo?

• A type of sound wave that travels in a straight line.

• A reflection of sound that arrives at the listener after a delay.

• A sound that is produced by a musical instrument.

• A phenomenon where sound is absorbed by materials.

What is the Doppler effect?

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

• The increase in amplitude of a wave as it approaches an observer.

• The reflection of waves off a surface causing a change in direction.

• The phenomenon where waves travel faster in denser mediums.