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Grade 9 Electromagnetic Spectrum Worksheet with Answers

Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Physics

Unit 4: WavesThe Electromagnetic SpectrumNGSS 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 9 · Physics

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Class

Date

Learning goal: The Electromagnetic Spectrum · 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 do we feel as heat?
  2. 6Which waves are used to cook food quickly?
  3. 7Which waves have the longest wavelength?
  4. 8Which waves have the highest energy?
  5. 9Which electromagnetic waves can we see?
  6. 10Which waves cause sunburn?
  • AVisible light
  • BMicrowaves
  • CGamma rays
  • DRadio waves
  • EInfrared
  • FUltraviolet
Part C

Answer each question. Use full sentences where you can.

  1. 11

    Which waves carry radio and TV signals?

  2. 12

    Why are X-rays and gamma rays dangerous?

  3. 13

    Order from longest to shortest wavelength: X-rays, radio, visible

  4. 14

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

  5. 15

    Which waves are used to see bones?

  6. 16

    Which color of visible light has the longest wavelength?

★ Challenge corner for fast finishers

Why does your breath make fog on a cold window?

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/physics/9/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 — infrared
  6. 6.B — microwaves
  7. 7.D — radio waves
  8. 8.C — gamma rays
  9. 9.A — visible light
  10. 10.F — ultraviolet (UV)
  11. 11.radio waves
  12. 12.they have high energy that can damage cells and DNA
  13. 13.radio, visible, X-rays
  14. 14.yes — the speed of light
  15. 15.X-rays
  16. 16.red
  17. ★water vapor in your breath condenses on the cold glass (challenge corner)

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