Video & Quiz: How Sound Travels Across Different Mediums

What is sound?

• A form of electricity that flows in liquids

• A form of heat that moves through solids

• A form of light that travels through air

• A form of energy that spreads from its source in all directions

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Why couldn't Bubbles hear the person calling?

• The sound didn't travel to Bubbles

• Bubbles was busy doing something else

• The person didn't call loudly enough

• Bubbles was too far away to hear

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What does sound need to travel?

• A liquid

• A vacuum

• A medium

• A solid

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Which medium allows sound to travel the fastest?

• Metal

• Wood

• Water

• Air

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Why do we see lightning before we hear thunder?

• Sound travels slower than light

• Lightning travels through solids

• Lightning is faster than thunder

• Thunder is faster than lightning

How fast does sound travel in air?

• 350 meters per second

• 500 meters per second

• 100 meters per second

• 200 meters per second

What happens when sound waves travel through a solid?

• They slow down

• They speed up

• They disappear

• They stay the same

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Why can't we hear anything in outer space?

• Sound waves get reflected by stars

• Sound waves get absorbed by planets

• There is too much noise in outer space

• There is no air in outer space

What happens when all the air is removed from a jar?

• The jar becomes louder

• The jar becomes quieter

• Sound cannot travel through the jar

• Sound can still travel through the jar

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Where does sound travel the slowest?

• Metal

• Wood

• Water

• Air

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