What is a vibration?

• A loud sound

• An amount of time

• The rubbing of one object against another

• A rapid back and forth movement

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

In association with sound, what is a medium?

• The sound wave itself

• The material through which sound travels

• The vibration of particles

• The pitch of the sound wave

Tags

NGSS.MS-PS4-2

How does sound travel?

• Through empty space

• Through vibrating mediums

• Through electrically charged particles

• It doesn't travel; it just exists in space

Tags

NGSS.MS-PS4-2

How can sound travel through air?

• Through open spaces

• Through air particles bumping into each other

• Through electronically charged particles

• It doesn't travel; it just exists

Tags

NGSS.MS-PS4-2

Which of the following lists rate the materials in order from the best sound carrier (fastest) to the worst sound carrier (slowest)?

• Gas, liquid, solid

• Solid, gas, liquid

• Liquid, solid, gas

• Solid, liquid, gas

Tags

NGSS.MS-PS4-2

How does an echo occur?

• By sound waves bouncing off surfaces

• By sound waves multiplying

• By sound waves traveling around objects

• By sound waves being absorbed

Tags

NGSS.MS-PS4-2

Once a sound is produced, it travels outward in all directions until?

• The wave runs out of energy

• The waves gains energy

• The sound wave reaches a new medium

• Nothing. It will continue traveling forever

Tags

NGSS.MS-PS4-1

The faster the vibration, the _______________ the pitch will be.

• Faster

• Higher

• Lower

• Slower

What is it called when a sound disappears into a surface? What kinds of materials will interact with sound this way?

• Transmission; hard materials

• Reflection; hard materials

• Absorption; soft materials

• Rarefaction; soft materials

Tags

NGSS.MS-PS4-2

Based on your understanding of pitch, what is a possible reason that the tightness of a rubber band can change the pitch of sound?

• It makes the rubber band vibrate faster or slower

• It makes the rubber band vibrate in different directions

• It makes the rubber band vibrate more loudly or softly

• It makes the rubber band vibrate for different lengths of time

Tags

NGSS.MS-PS4-1