Lesson Worksheet: The Electromagnetic Spectrum Physics • 9th Grade
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
- BInfrared 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 |
|---|---|---|---|---|---|---|
| m | m | m | m | m | m | 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
- B
- C
- D
- E
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
- B
- C
- D
- E
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
- CRadio waves
- DUltraviolet 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 is not a part of the electromagnetic spectrum?
- AP-waves
- BX-rays
- CGamma rays
- DMicrowaves
- EInfrared waves
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