Waves, Sound and Light

Which part of the electromagnectic spectrum is necessary for the sense of sight in humans?

• radio waves

• gamma rays

• infrared light

• visible light

Tags

NGSS.HS-PS4-3

Which part of the electromagnetic spectrum has the longest wavelengths?

• radio waves

• gamma rays

• infrared light

• ultraviolet light

A museum sets up a display of fluorescent minerals. Which best describes how electromagnetic waves can be used to enhance the display?

• Infrared light shining on the minerals will cause them to give off visible light

• Visible light shining on the minerals will cause them to give off infrared light.

• Ultraviolet light shining on the minerals will cause them to give off visible light.

• Visible light shining on the minerals will cause them to give off ultraviolet light.

Tags

NGSS.MS-PS4-2

If humans cannot see ultraviolet waves, how can ultraviolet light be used to gather evidence of a crime?

• Ultraviolet light detects the presence of radioactive substances.

• Ultraviolet light shows cold areas as blue and warm areas as red.

• Ultraviolet light causes substances to fluoresce and give off visible light.

• Ultraviolet light transmits information to AM and FM radio receivers.

Which two animals use echolocation?

• bats and humans

• bats and dolphins

• dolphins and humans

• dolphins and butterflies

An ultrasound tech is trying to identify an object, but the screen of the machine is broken. Which statement best describes this situation?

• The generated sound wave will not be able to reflect off of the object.

• The sound wave will not be generated, so there will be no echoes received.

• The echoes will be made but will not be able to be received by the machine.

• The machine will not be able to process the received echoes into images.

What do digital signals turn sounds into?

• analog signals

• interference

• continuity

• zeros and ones

Which best describes the order of the technology used to transmit a sound through the radio?

• microphone → transmitter → microphone

• radio → transmitter → radio

• radio → transmitter → microphone

• microphone → transmitter → radio

Sound waves are produced when something is caused to

• reflect

• vibrate

• slow down.

• get warmer.

When sound is created, it travels to the ear through a

• compression

• medium

• rarefaction

• surface

Tags

NGSS.MS-PS4-2