How Does Sound Travel

What is sound made of?

• air

• vibrations

• light

• water

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What are sound waves?

• Waves of energy or vibrations

• Waves of water

• Light beams

• Air pressure

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What happens when sound waves reach your eardrum?

• They disappear

• They turn into light

• They make the eardrum vibrate

• They bounce back into the air

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What changes the vibrations into electrical signals in your ear?

• Eardrum

• Middle ear

• Cochlea

• Air particles

Why do sounds get quieter the further you are from the source?

• The sound waves grow larger

• The sound waves get stronger

• The sound waves lose energy

• The air particles stop vibrating

What is amplitude?

• The size of the sound

• The strength of the vibration

• The color of the sound

• The speed of sound waves

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What happens to sound in a vacuum?

• It gets louder

• It travels faster

• It cannot travel

• It changes into light

What allows sound to travel through solids, liquids, and gases?

• Air only

• Particles that bounce off each other

• Sunlight

• Water pressure

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What part of the ear sends electrical signals to the brain?

• Eardrum

• Cochlea

• Hearing nerve

• Hair cells

What do quieter sounds have compared to louder sounds?

• Smaller amplitude

• Bigger waves

• More vibrations

• Faster signals

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