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How is sound produced?

• When air is completely still

• When particles are frozen

• When the source of sound vibrates

• When there is no movement

What happens when you talk?

• Your lungs create noise directly

• Your vocal cords remain still

• Air from your lungs vibrates your vocal cords, producing your voice

• Your brain creates the sound

How do sound vibrations travel through the air?

• They flow like water

• They jump without touching particles

• Air particles bounce into each other, transferring vibrations

• They teleport through the air

What part of your ear receives the sound vibrations?

• Outer ear

• Ear canal

• Ear drum

• Brain

What does your eardrum do with the sound vibrations?

• Blocks them

• Sends a message to your brain

• Absorbs them silently

• Echoes the sound back

What do sound vibrations need to travel?

• Light

• Vacuum

• Particles

• Energy only

Why can’t we hear sounds in space?

• Space is too far

• Sound gets absorbed by stars

• Space has no particles to carry vibrations

• The sound turns into light

What are the two properties of sound?

• Volume and Color

• Pitch and Speed

• Volume and Pitch

• Size and Speed

What does the volume of a sound describe?

• The speed of the sound

• How loud or quiet the sound is

• The type of sound

• The frequency of the sound

What makes a sound loud?

• The vibrations of the sound are small

• The vibrations of the sound are large

• The frequency of the sound is high

• The sound has no vibrations