Sound, Media & Wave Speed Mod L Unit 1 Lesson 2

Sound, Media & Wave Speed Mod L Unit 1 Lesson 2

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Multiple Choice

We hear sound when the _________ hit each other and pass on the ________

• vibrations, particles

• particles, sound

• sound, vibrations

• particles, vibrations

Multiple Choice

Sound needs a ______ for its propagation.

• transmitter

• medium

• sound

Multiple Select

What are some mediums that sound needs to propagate. Check all that apply.

• solid

• liquid

• gas

• a vacuum

Multiple Choice

Sound travels slower than light in air.

• True

• False

Multiple Choice

Why does sound travel slower in air (gases)?

• the particles are closer together.

• the particles are farther apart than solids or liquids.

Multiple Choice

Why does sound travel faster in water than in air and travel further?

• Particles are closer together in water than gas.

• Particles are closer together than in a solid or liquid.

• Particles are farther apart in water than in air (gas).

Multiple Choice

The particles in a solid are _______ packed.

• tightly

• loosely

Multiple Choice

In which medium do sound waves travel the fastest?

• liquid

• solid

• gas

• vacuum

Multiple Select

Why can't you hear anything in outer space? Check all that apply.

• There is not medium for sound to travel.

• There is no matter in space.

• Space is a vacuum.

• Sound travels in space.

Multiple Choice

How fast sound travels depends on the

• medium

• sound made

• maximum