Imagine you are calling out to your friend as they are walking towards you. How is your friend able to hear the sound you create? Crests and troughs are created to carry sound waves through air molecules.

Imagine you are calling out to your friend as they are walking towards you. How is your friend able to hear the sound you create?

Crests and troughs are created to carry sound waves through air molecules.

Compression and rarefactions carry sound waves through air molecules.

Crests and troughs are created to carry sound waves through moisture in the air (water molecules).

Compressions and rarefactions carry sound waves by bouncing off of solid structures between you and your friend.

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