Understanding Sound

What are the three essential components needed for sound to exist?

• A source, a receiver, and a transmitter

• A medium, a receiver, and a transmitter

• A source, a medium, and a transmitter

• A source, a medium, and a receiver

In which medium does sound travel the fastest?

• Air

• Water

• Iron

• Vacuum

Which property of sound helps us determine if a sound is loud or soft?

• Pitch

• Timbre

• Intensity

• Frequency

How can we identify the source of a sound, such as a flute or a guitar?

• By its timbre

• By its pitch

• By its intensity

• By its frequency

What is an echo?

• A sound wave that changes direction after hitting an obstacle

• A sound that travels faster in water

• A sound that is produced by a musical instrument

• A sound that is absorbed by a surface