Electromagnetic Radiation

When an object moves away from you, its radiation's wavelength _________ towards the red end of the spectrum.

• lengthens

• shortens

• remains the same

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NGSS.HS-PS4-1

Electromagnetic radiation is classified as a transverse wave because:

• it travels through a vacuum.

• it travels at the speed of light.

• the electric and magnetic waves are perpendicular to each other.

• the vibrations are perpendicular to the direction of propagation.

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NGSS.HS-PS4-1

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Radio waves are:

• short wavelength electromagnetic waves.

• short wavelength sound waves.

• long wavelength electromagnetic waves.

• long wavelength sound waves.

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NGSS.HS-PS4-1

A radio wave:

Which of these statements is TRUE?

• only.

• and 2 only.

• 2 and 3 only.

• only.

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NGSS.HS-PS4-1

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NGSS.HS-PS4-5

The dual nature of electromagnetic radiation applies to:

• all electromagnetic radiation all the time.

• only electromagnetic frequencies above those of infrared radiation all of the time.

• all electromagnetic radiation when it interacts with materials such as metals.

• visible light only all of the time because its particles are called photons.

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NGSS.HS-PS4-1

NGSS.HS-PS4-3

which of the following lists shows EMR correctly arranged in order of increasing frequency?

• gamma rays, X-rays, microwaves, radio waves.

• X-rays, gamma rays, microwaves, radio waves.

• microwaves, radio waves, X-rays, gamma rays.

• radio waves, microwaves, X-rays, gamma rays.

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NGSS.HS-PS4-1

Which of the following types of EMR is used to send a signal from a TV remote control device to change the channel on a TV?

• radio waves

• microwaves

• infrared

• X-ray

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NGSS.HS-PS4-5

Which of the following occurs when the wavelength and the amplitude of EMR passing through a vacuum, is increased?

• The frequency decreases and the intensity increases.

• The frequency and the intensity increases.

• The frequency and the intensity decreases.

• The frequency increases and the intensity decreases.

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NGSS.HS-PS4-1

Which of the following affects the energy of the photons of EMR?

• amplitude

• period

• frequency

• the medium through which it passes.

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NGSS.HS-PS4-1

NGSS.HS-PS4-4

A boy falls off his skateboard and breaks his arm.What type of radiation would be used to look at his arm and determine whether its broken or not?

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