C.2 Wave Model

Electormagnetic radiation travels through a vacuum at a speed of 

• 186,000 m/s.
• 125 m/s
• 3.00 x 10⁸ m/s
• It depends on the wavelength

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Which type of electromagnetic radiation produces the heat we can feel coming from the toaster?

• Radio waves
• Infrared waves
• X-rays
• Gamma rays

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How many waves are in this picture?

• 1
• 2
• 3.5
• 4

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The highest point on a wave

• crest
• trough
• amplitude
• wavelength

When a wavelength is doubled, what happens to the frequency of a wave?

• doubled
• stays the same 
• halved
• quadruples

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What is the unit of frequency?

• m
• m/s
• s
• 1/s

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Which of the following represents the distance of one wavelength?

• A to C
• A to D
• B to F
• C to G

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Which of the following means "a particle of light?"

• X-ray
• photon
• Gamma ray
• electron

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What experimental observations did the wave model of light fail to explain?

• Reflection of light in a mirror
• Diffraction of light in a prism
• Photoelectric Effect
• Fuzzy area around shadows (refraction)

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Shorter wavelengths have ______ frequencies

• Longer
• Shorter
• independent
• no

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