8.PS4.2 Mechanical vs EM waves review

Which of the following is true for sound waves?

• They require a medium.

• They are unrelated to vibrations.

• They cannot travel through liquids

• They can travel in a vacuum

Which color has the longest wavelength?

• Yellow

• Red

• Green

• Purple

Tags

NGSS.HS-PS4-1

Which medium will transmit sound the fastest?

• ocean water
• solid iron
• perfumed air
• a sponge

Tags

NGSS.MS-PS4-2

Sound is able to travel faster in solids than in air because the molecules in a solid are

• closer together than air molecules
• more easily moved than air molecules
• moving faster than air molecules moving faster than air molecules
• larger than air molecules

Tags

NGSS.MS-PS4-2

If a sound wave (mechanical wave) travelled from a solid to a liquid, what would happen to the speed of the sound wave?

• It will travel faster.

• It will travel slower.

• The speed of the sound wave will stay the same.

• The amplitude will change.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

This shows the phenomenon known as....

• reflection
• refraction
• mirrors
• focal point

Tags

NGSS.MS-PS4-2

When a wave strikes an object and bounces off (example echo) this is called what?

• medium

• refraction

• reflection

• interference

Tags

NGSS.MS-PS4-2

Which of the following represents refraction?

• A
• B
• C
• D

Tags

NGSS.MS-PS4-2

When a wave transfers all of its energy into the material it strikes

• Absorption

• Diffraction

• Reflection

• Refraction

Tags

NGSS.MS-PS4-2

Screaming into a pillow is an example of sound waves being ______.

• reflected

• refracted

• absorbed

Tags

NGSS.MS-PS4-2