Nature of Light

What is the speed of light in a vacuum?

• 299,792,458 km/s

• 299,792,458 m/s

• 299,792,458 ft/s

• 299,792,458 mph

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What type of electromagnetic radiation has the longest wavelength?

• Gamma rays

• X-rays

• Ultraviolet

• Radio waves

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Light is a good example of

•  Luminous objects

• Non-luminous objects

• Transparent objects

• Opaque objects

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What happens to the energy of a photon as frequency increases?

• The energy increases

• The energy decreases

• The energy stays the same 

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Put the visible light colors in order from longest wavelength to shortest wavelength

• Green

• Blue

• Orange

• Red

• Yellow

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Which of the following has frequencies higher than ultraviolet rays?

• visible light

• infrared rays

• x-rays

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Which of the following has wavelengths longer than microwaves?

• Infrared waves

• Radio waves

• Visible light

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Emission of light energy from an atom occurs when an electron

• drops from a higher to a lower energy level.

•    jumps from a lower to a higher energy level.   

•    moves within its atomic orbital.

• falls into the nucleus.

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The color blue has more energy than the color red.

• True

• False

• They have the same energy

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Which drawing represents the process by which an emission line is formed?

• A

• B

• C

• D

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