Unit 3 - Electromagnetic Radiation

Which color has the highest frequency?

• green

• blue

• red

• yellow

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

• radio waves

• visible light

• gamma rays

• x-rays

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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 photon carries the most energy?

• Yellow Light

• Red Light

• Blue Light

• Green Light

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Light is:

• a star and a galaxy

• a wave and a particle

• sound and energy

• unable to be measured

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A light particle is called a(n):

• electromagnetic wave

• photon

• electron

• atom

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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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Which has a longer wavelength?

• infrared

• ultraviolet

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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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This picture is an example of a(n)...

• absorption spectrum
• emission spectrum
• continuous spectrum
• black body spectrum

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