Chemistry Frequency and Wavelength

_____________________light is the only type of EM wave detected by the human eye.

• Red

• Gamma

• Microwave

• Visible

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Calculate the wavelength of light that has a frequency of 5.2 x 10¹² Hz. 

• 5.8 x 10 ^-5 m
• 5.8 x 10 ^-7 m
• 5.19 x 10 ¹⁴ m
• 1.56 x 10 ²³ m

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High frequency waves have _________ wavelengths.

• varying

• long

• the same

• short

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If an AM radio station broadcasts at
9.95 x 10⁵ Hz, what is the wavelength of this radiation?

• 6.59 x 10^-28 m
• 1.01 x 10^-6 m
• 3.32 x 10^-3 m
• 302 m

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The distance between two crests or two troughs of a wave is called:

• frequency
• amplitude
• wavelength
• hertz

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An argon ion laser emits light at 488 nm. What is the frequency of this radiation? (1 nm = 1x10^-9m)

• 4.07 x 10^-19 Hz
• 6.15 x 10¹⁴ Hz
• 1.46 x 10² Hz
• 2.05 x 10⁶ Hz

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Look carefully at the waves. Which carries the most energy?

• microwave

• infrared

• ultraviolet

• x-ray

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Which wave has a greater frequency?

• A
• B

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A common infrared laser operates at 1.06 x 10³ nm. What is the energy of a photon with this wavelength? (1 nm = 1x10^-9m)

• 7.02 x 10^-40 J
• 6.25 x 10^-28 J
• 3.54 x 10^-15 J
• 1.87 x 10^-19 J

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NGSS.HS-PS3-1

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low
• high, high
• low, high
• low, low

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