How high or low a sound is

How loud or soft the sound is

Sound waves travel slowest through a _____

Sound waves travel fastest through a ______

Sound waves move faster when the medium is ______

Sound waves move slower when the medium is _____

What is a tool that makes sounds louder called?

Our __________ vibrates when we talk and sing

Human's, __________ and thunder are examples of natural sources of sound

________ need to be blown to produce sound

Unwanted sound is called ___________

Why can't we hear sound in space?

What happens to our hearing if we listen to loud noises all the time?

How can we protect our ears from hearing loss?