What causes sound to be produced?

Which part of the ear helps us hear sounds?

Which of these travels fastest?

What is the name of the soft part that captures sound from the air?

Which of these instruments produces sound by vibration of strings?

What kind of pitch does a small, tight drum usually make?

What do we call a sound that is too soft for humans to hear?

Which animal is known to use sound to 'see' in the dark (echolocation)?

When sound reflects off a surface and comes back, what is it called?

What unit is used to measure the loudness of sound?