Unit 4 - Electromagnetic Radiation

The portion of the electromagnetic spectrum that humans can see is called:

• radio waves

• visible light

• gamma rays

• x-rays

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When wavelength increases...

• energy decreases

• energy increases

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the distance between peaks of electromagnetic waves is called:

• wavelength

• frequency

• energy

• Planck's Constant

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Which type of electromagnetic energy carries the least energy?

• X-Rays

• Visible Light

• Ultraviolet

• Microwaves

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Which type photon carries the most energy?

• Yellow Light

• Red Light

• Blue Light

• Green Light

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A light particle is called a(n):

• electromagnetic wave

• photon

• electron

• atom

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Which has a longer wavelength?

• infrared

• ultraviolet

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Which is can be felt as "heat"?

• gamma rays

• infrared

• x-ray

• blue light

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If you see an object that is "red", what does this mean?

• The object is absorbing only red wavelengths

• The object is reflecting only red wavelengths

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If astronomers examine the spectral lines of a distant galaxy and saw that they displayed a blue shift, what would this mean about the motion of the galaxy?

• The galaxy is not moving.

• The galaxy is moving toward Earth.

• The galaxy is moving away from Earth.

• The galaxy is shifting back and forth at 650 Thz, the frequency of blue light.

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