Properties of Sound

What is a sound wave?

• A sound wave is caused by the movement of light particles

• A sound wave is a longitudinal wave caused by the vibration of particles in a medium.

• A sound wave is a transverse wave

• A sound wave is a type of electromagnetic wave

What are the three properties of sound waves?

• intensity, speed, and duration

• velocity, pitch, and volume

• frequency, amplitude, and wavelength

• color, texture, and shape

How does the amplitude of a sound wave affect its loudness?

• The amplitude of a sound wave directly affects its loudness. A larger amplitude produces a louder sound, while a smaller amplitude produces a quieter sound.

• A smaller amplitude produces a louder sound

• A larger amplitude produces a quieter sound

• The amplitude of a sound wave has no effect on its loudness

Explain the relationship between frequency and pitch of a sound wave.

• Lower frequency sound waves have a higher pitch

• The frequency of a sound wave is directly related to its pitch. Higher frequency sound waves have a higher pitch, while lower frequency sound waves have a lower pitch.

• Higher frequency sound waves have a lower pitch

• The frequency of a sound wave has no impact on its pitch

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

• 500 m/s

• 1000 m/s

• 343 m/s

• 123 m/s

How does the medium through which a sound wave travels affect its speed?

• The medium through which a sound wave travels affects its speed by changing the density and elasticity of the medium.

• The medium through which a sound wave travels affects its speed by changing the color of the wave.

• The medium through which a sound wave travels affects its speed by influencing the amplitude of the wave.

• The medium through which a sound wave travels affects its speed by altering the pitch of the wave.

What is the difference between a longitudinal and a transverse wave?

• The difference between a longitudinal and a transverse wave is the amplitude of the wave.

• The difference between a longitudinal and a transverse wave is the frequency of the wave.

• The difference between a longitudinal and a transverse wave is the direction in which the particles of the medium move in relation to the direction of the wave.

• The difference between a longitudinal and a transverse wave is the speed at which they travel through a medium.

Explain how echoes are formed.

• Echoes are formed when sound waves bounce off a surface and return to the listener's ears.

• Echoes are formed by the vibration of air molecules

• Echoes are formed by the reflection of light waves

• Echoes are formed by the refraction of sound waves

What is the role of the ear in perceiving sound waves?

• The ear only filters out certain sound waves

• The ear only amplifies sound waves

• The ear plays a crucial role in collecting and converting sound waves into electrical signals for the brain to interpret.

• The ear has no role in perceiving sound waves

How can sound be amplified using a megaphone?

• By emitting ultrasonic waves to enhance sound

• By using a built-in microphone to generate louder sound

• By absorbing sound waves and converting them into visual signals

• A megaphone amplifies sound by using a cone-shaped device to collect and direct sound waves in a specific direction, increasing the volume and distance the sound can travel.