MM Long Test

What is the main cause of sound?

• Heat

• Light

• Vibration

• Movement

Which of the following is an example of how sound changes?

• A guitar string vibrating

• A person whispering

• A drum being struck

• A loudspeaker vibrating

What is the term used to describe the back-and-forth motion that produces sound?

• Frequency

• Vibration

• Pitch

• Wave

What is the main characteristic of sound waves?

• They travel faster through solids

• They travel faster through gases

• They require no medium to travel

• They cannot travel through liquids

How do vibrations in air particles produce sound?

• They compress and expand the air

• They change the temperature of the air

• They move at a constant speed

• They absorb the sound

Which of the following materials does sound travel fastest through?

• Air

• Water

• Steel

• Wood

Which property of sound describes how high or low a sound is?

• Volume

• Pitch

• Frequency

• Amplitude

How is sound produced by a musical instrument?

• By the vibration of the instrument's body

• By the motion of air particles

• By the speed of the instrument's movement

• By the flow of electricity

What is a typical use of sound waves on screen?

• To create light effects

• To carry information through signals

• To produce vibrations in sound systems

• To distort images

What happens when sound waves hit a surface?

• They are absorbed

• They disappear

• They change into light

• They travel faster