Worksheet: The Electromagnetic Spectrum

In this worksheet, we will practice describing the electromagnetic spectrum, from radio waves to gamma rays, and identifying colors of visible light.

Q1:

Which of the following is a reasonable frequency for a photon of red light?

  • A 3 . 4 3 × 1 0 Hz
  • B 5 . 4 5 × 1 0 Hz
  • C 9 . 8 9 × 1 0 Hz
  • D 4 . 6 7 × 1 0 Hz
  • E 6 . 6 5 × 1 0 Hz

Q2:

Which of the following is the energy of a photon of orange light?

  • A2.05 eV
  • B2.50 eV
  • C1.87 eV
  • D1.25 eV
  • E3.08 eV

Q3:

Which of the following is a reasonable energy of a photon of green light?

  • A 2 . 3 3 × 1 0 J
  • B 2 . 7 5 × 1 0 J
  • C 4 . 4 1 × 1 0 J
  • D 3 . 3 1 × 1 0 J
  • E 3 . 6 6 × 1 0 J

Q4:

Which of the following is a possible frequency of a photon of green light?

  • A 5 . 1 7 × 1 0 Hz
  • B 5 . 6 6 × 1 0 Hz
  • C 6 . 9 4 × 1 0 Hz
  • D 4 . 7 6 × 1 0 Hz
  • E 4 . 3 4 × 1 0 Hz

Q5:

Which of the following is a reasonable energy of a mole of photons of blue light?

  • A253 kJ
  • B340 kJ
  • C312 kJ
  • D290 kJ
  • E281 kJ

Q6:

A mole of photons of equal energy has a total energy of 199.4 kJ. What color does this light appear?

  • AYellow
  • BGreen
  • CBlue
  • DOrange
  • EViolet

Q7:

A ray of light has a frequency of 720 THz. What color does this light appear?

  • AOrange
  • BGreen
  • CViolet
  • DBlue
  • EYellow

Q8:

Each photon in a ray of light has an energy of 2.62 eV. What color does this light appear?

  • AOrange
  • BYellow
  • CGreen
  • DViolet
  • EBlue

Q9:

Which of the following quantities corresponds to a photon of red light?

  • A206 kJ/mol
  • B719 THz
  • C 2 . 9 4 × 1 0 J
  • D495 nm
  • E2.15 eV

Q10:

Which of the following quantities corresponds to a photon of yellow light?

  • A 2 . 8 4 × 1 0 J
  • B513 THz
  • C610 nm
  • D1.95 eV
  • E240 kJ/mol

Q11:

Which of the following lists the electromagnetic radiation in the correct order by increasing wavelengths?

  • AGamma rays, ultraviolet radiation, microwaves, radio waves
  • BMicrowaves, visible radiation, gamma rays, X-rays
  • CX-rays, microwaves, infrared radiation, radio waves
  • DRadio waves, gamma rays, infrared radiation, microwaves

Q12:

If a complex has a maximum absorption at 423 nm, what color would the complex appear to the human eye?

  • AYellow
  • BViolet
  • CGreen
  • DBlue
  • ERed

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