Speed of Sound, Doppler Effect, & Uses

Which factor does not affect the speed of sound:

• temperature
• distance
• density
• elasticity

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NGSS.MS-PS4-2

NGSS.MS-PS4-1

Which item will sound travel faster through if each medium is at 20 degrees Celsius?

• water

• dry air

• aluminium

What medium does sound travel through slowest?

• gas
• solid
• liquid
• trees

Sound is caused by....

• molecules
• vibrations
• people
• space

Sound does not travel in space because

• Space is too far away.
• There is no matter in space.
• Space is the final frontier
• Space has planets.

Tags

NGSS.4-PS3-2

NGSS.4-PS4-1

Sound travels FASTEST through which of these materials?

• Air
• Empty space
• Metal
• Water

Tags

NGSS.MS-PS4-2

When the sound source moves, the frequency changes
ex. police car siren sounding lower pitch after the car passes

• pitch
• frequency
• Doppler Effect
• medium

Tags

NGSS.HS-PS4-1

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.
• Sound does not travel faster through a solid than a gas.
• Solid molecules are packed tightly.
• Gas molecules move slowly.

Tags

NGSS.MS-PS4-2

Sound waves move as ________ waves.

• Longitudinal
• Electromagnetic
• Transverse
• Microwaves

Which wave has the lowest frequency?

• Orange
• Green
• Blue
• Purple