Chapter 10 Sound and Light Sheltered

What does the number of vibrations per second of a sound wave determine?

• its pitch

• its frequency

• its volume

• its intensity

Which use of sound waves depends on the fact that sound waves are reflected?

• sonar

• ultrasound

• speakers

• Both A and B

Tags

NGSS.MS-PS4-2

Which worker would most likely have damage to his or her ears?

• office worker (40-60 decibels)

• officer who directs city traffic (70-80 decibels)

• teenager who listens to loud music (90-100 decibels)

• technician who loads jet planes (135 decibels)

Which statement describes light correctly?

• Light is a type of electromagnetic wave.

• Light has properties of both particles and waves.

• Light waves travel more quickly than anything else does.

• All of the above

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-1

Which device produces powerful light waves that are all the same and all lined up?

• prism

• laser

• plane mirror

• X-ray

Which of the following devices is used to correct a nearsighted eye?

• concave mirror

• convex mirror

• concave lens

• convex lens

Sound is produced when matter __________________________, or moves quickly back and forth.

• matter

• waves

• molecules

• vibrates

Sound travels in ___________________________________, which are produced by vibrations.

• matter

• waves

• molecules

• vibrates

Tags

NGSS.MS-PS4-1

You can only hear sound when it travels through _________________________________.

• matter

• waves

• molecules

• vibrates

Tags

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NGSS.MS-PS4-1

Sound travels fastest through solids because the _______________________________ of matter

are closest together.

• matter

• waves

• molecules

• vibrates