What is a wave?

• A type of sound

• A disturbance that carries energy

• A form of light

• A solid object

Which type of wave requires a medium to propagate?

• Electromagnetic wave

• Mechanical wave

• Transverse wave

• Longitudinal wave

What is an example of a mechanical wave?

• Light

• Sound

• X-rays

• Radio waves

What type of wave moves at right angles to the direction of the wave?

• Transverse wave

• Mechanical wave

• Electromagnetic wave

• Longitudinal wave

What is the unit of frequency?

• Newton (N)

• Hertz (Hz)

• Decibel (dB)

• Joule (J)

What is the perception of sound intensity called?

• Timbre

• Loudness

• Pitch

• Echo

What is the term for sound waves below 20 Hz?

• Ultrasonic

• Infrasonic

• Human Audio Frequency

• Transverse

What describes the quality of sound?

• Frequency

• Loudness

• Timbre

• Pitch

What happens to sound when it encounters a barrier?

• It reflects

• It disappears

• It amplifies

• It refracts

What is the bending of sound waves called?

• Diffraction

• Doppler effect

• Refraction

• Reflection