4.1: Light and Quantization of Energy

Essential Question: What is light made of?

• Photons

• Electrons

• Neutrons

• Protons

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the distance between two consecutive crests or troughs is called the

• crest

• rest position

• amplitude

• wavelength

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How are wavelength, frequency, and the speed of light related?

• The speed of light is the product of wavelength and frequency.

• Wavelength is the sum of frequency and the speed of light.

• Frequency is the difference between wavelength and the speed of light.

• The speed of light is the difference between wavelength and frequency.

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What is the equation for energy in terms of frequency?

• E = hv

• E = mc^2

• E = mv^2/2

• E = kT

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Electromagnetic radiation is:

• a type of energy that is propagated through space in the form of waves

• a form of matter that has mass and occupies space

• a chemical reaction that releases energy

• a type of sound wave

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What is wavelength?

• The distance between two consecutive peaks of a wave

• The time it takes for a wave to complete one cycle

• The height of a wave

• The speed at which a wave travels

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What is frequency?

• The number of times a wave repeats in a second

• The speed of light

• The distance between two waves

• The height of a wave

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What is amplitude?

• Amplitude is the height of a wave's crest from the rest line.

• Amplitude is the distance between two wave crests.

• Amplitude is the speed of the wave.

• Amplitude is the frequency of the wave.

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The electromagnetic spectrum is a range of all types of what?

• Light waves

• Sound waves

• Water waves

• Mechanical waves

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A quantum is:

• a large amount of energy

• a discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents

• a type of particle

• a unit of time

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