Sound

Which part of our body vibrates and creates sound?

• teeth

• eyes

• vocal cords

• tongue

How do the air molecules create a sound?

• They squash their neighboring air molecules as the medium vibrates.

• They don't move at all as the medium vibrates.

• They just move away from each other as the medium vibrates.

• None of the choices.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What is sound?

• Sound is a matter

• Sound is an energy

• Sound is both matter and energy

• None of the choices

Which of the following medium where sound travels the fastest?

• Solid

• Liquid

• Gas

Tags

NGSS.MS-PS4-2

What happens to sound waves when they hit a solid surface?

• They speed up

• They disappear

• They reflect back

• They turn into light waves

Tags

NGSS.MS-PS4-2

If you increase the volume of a sound, what are you changing?

• The pitch of the sound

• The frequency of the sound waves

• The amplitude of the sound waves

• The speed of the sound waves

Tags

NGSS.MS-PS4-1

What are sound waves?

• Waves that can only travel through water

• Waves that carry energy through the air or another medium

• Waves that are visible to the human eye

• Waves that can only travel through solid objects

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What happens to the sound when it passes through a sound insulator?

• It gets louder

• It speeds up

• It gets quieter

• It changes color

Tags

NGSS.MS-PS4-2

What is frequency in terms of sound waves?

• The volume of the sound

• The direction of the sound wave

• The number of vibrations per second

• The color of the sound wave

What does pitch refer to in sound?

• How loud or soft a sound is

• How high or low a sound seems to a person

• The speed of the vibration

• The direction of the sound