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Grade 12 Electromagnetic Spectrum Worksheet with Answers

Grade 12 (US) · Year 13 (UK) · Class 12 (India) · Physics

Unit 3: Waves, Light & ElectricityWaves & LightNGSS HS-PS4-4

The types of electromagnetic waves, their uses and dangers, from radio to gamma rays. This free high school worksheet has 16 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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The Electromagnetic Spectrum

Grade 12 · Physics

Score___ / 16

Name

Class

Date

Learning goal: Waves & Light · NGSS HS-PS4-4

Directions: This worksheet has 3 parts. Read the instructions at the start of each part.

Part A

Label the diagram. Use the words in the box.

Word bank

microwavesX-raysvisible lightradio waves
infraredultravioletgammarayslonger wavelengthhigher energy1234
  1. 1
  2. 2
  3. 3
  4. 4
Part B

Match each clue to the right word. Write the letter in the box.

  1. 5Which waves have the longest wavelength?
  2. 6Which waves have the highest energy?
  3. 7Can electromagnetic waves travel through empty space?
  4. 8Which waves are used to see bones?
  5. 9Which waves do we feel as heat?
  6. 10Which waves are used to cook food quickly?
  • AX-rays
  • BMicrowaves
  • CYes
  • DGamma rays
  • ERadio waves
  • FInfrared
Part C

Answer each question. Use full sentences where you can.

  1. 11

    Do all electromagnetic waves travel at the same speed in a vacuum?

  2. 12

    Which color of visible light has the longest wavelength?

  3. 13

    Why are X-rays and gamma rays dangerous?

  4. 14

    Which waves cause sunburn?

  5. 15

    Which electromagnetic waves can we see?

  6. 16

    Which waves carry radio and TV signals?

★ Challenge corner for fast finishers

Why does a spinning ice skater spin faster when she pulls her arms in?

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/physics/12/em_spectrum

Answer key (click to show)
  1. 1.radio waves
  2. 2.microwaves
  3. 3.visible light
  4. 4.X-rays
  5. 5.E — radio waves
  6. 6.D — gamma rays
  7. 7.C — yes
  8. 8.A — X-rays
  9. 9.F — infrared
  10. 10.B — microwaves
  11. 11.yes — the speed of light
  12. 12.red
  13. 13.they have high energy that can damage cells and DNA
  14. 14.ultraviolet (UV)
  15. 15.visible light
  16. 16.radio waves
  17. ★conservation of angular momentum (challenge corner)

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