Worksheet: The Electromagnetic Spectrum

In this worksheet, we will practice analyzing the electromagnetic spectrum by identifying and describing types of electromagnetic radiation and their sources.

Q1:

What is the name of the type of electromagnetic radiation that has the longest wavelengths?

  • AGamma rays
  • BUltrasonic waves
  • CRadio waves
  • DMicrowaves
  • EX-rays

Q2:

The table shows a set of types of electromagnetic waves and the orders of magnitude of their wavelengths.

Radio Microwave Infrared Visible Ultraviolet X-Ray Gamma Ray
> 1 m 1 0 m 1 0 m 1 0 m 1 0 m 1 0 m < 1 0 m

Using the values from the table, how many wavelengths of ultraviolet radiation would have the same total length as one wavelength of infrared radiation? Answer in standard form.

  • A 1 0
  • B 1 0
  • C 1 0
  • D 1 0
  • E 1 0

Using the values from the table, how many wavelengths of the longest wavelength gamma radiation would have the same total length as one wavelength of X-ray radiation? Answer in standard form.

  • A 1 0
  • B 1 0
  • C 1 0
  • D 1 0
  • E 1 0

Q3:

Which of the following could be a source of X-ray radiation?

  • AThermal motion of atoms and molecules
  • BHigh-speed electrons impacting on a metal plate
  • CDecaying atomic nuclei
  • DAlternating electric currents
  • ENone of the answers is correct.

Q4:

Which of the following could be a source of infrared radiation?

  • AAlternating electric currents
  • BDirect electric currents
  • CThermal motion of atoms and molecules
  • DNone of the answers is correct.
  • EDecaying atomic nuclei

Q5:

Which of the following could be a source of radio waves?

  • AAlternating electric currents
  • BDecaying atomic nuclei
  • CHigh-speed electrons impacting on a metal plate
  • DDirect electric currents
  • ENone of the answers is correct.

Q6:

What is the name of the type of electromagnetic radiation that has the lowest frequencies?

  • AMicrowaves
  • BRadio waves
  • CGamma rays
  • DX-rays
  • EUltrasonic waves

Q7:

What is the name of the type of electromagnetic radiation that has the shortest wavelengths?

  • AGamma rays
  • BX-rays
  • CUltrasonic waves
  • D 𝑃 -waves
  • EMicrowaves

Q8:

What is the name of the type of electromagnetic radiation that has the highest frequencies?

  • AS-waves
  • BLongitudinal waves
  • CGamma rays
  • DX-rays
  • EUltrasonic waves

Q9:

Which of the following types of waves is a part of the electromagnetic spectrum?

  • AS-waves
  • BUltrasonic waves
  • CLongitudinal waves
  • DGamma rays

Q10:

Which of the following types of waves are not a part of the electromagnetic spectrum?

  • AP-waves
  • BX-rays
  • CGamma rays
  • DMicrowaves
  • EInfrared waves

Q11:

Which of the following could be a source of microwave radiation?

  • AHigh-speed electrons impacting on a metal plate
  • BNone of the answers is correct.
  • CThermal motion of atoms and molecules
  • DAlternating electric currents
  • EDirect electric currents

Q12:

Which row of the table correctly shows how the wavelengths of various types of electromagnetic waves compare with each other?

Types of Electromagnetic Wave
Longest Wavelength Shortest Wavelength
Row Type Type Type Type Type
i Radio X-ray Visible Infrared Gamma
ii Visible Ultraviolet X-ray Radio Microwave
iii Infrared Visible Ultraviolet X-ray Gamma
iv X-ray Gamma Visible Infrared Microwave
v Radio Microwave Infrared Ultraviolet Visible
  • Ai
  • Bii
  • Ciii
  • Dv
  • Eiv

Q13:

Which of the following could be a source of ultraviolet radiation?

  • ANone of the answers is correct.
  • BDecaying atomic nuclei
  • CThermal motion of atoms and molecules at room temperature
  • DHigh-speed electrons impacting on a metal plate
  • EAlternating electric currents

Q14:

Which of the following could be a source of gamma radiation?

  • ADecaying atomic nuclei
  • BAlternating electric currents
  • CNone of the answers is correct.
  • DDirect electric currents
  • EThermal motion of atoms and molecules

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