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Grade 8 Electromagnetic Spectrum Worksheet with Answers

Grade 8 (US) · Year 9 (UK) · Class 8 (India) · Science

Unit 4: WavesThe Electromagnetic SpectrumNGSS MS-PS4-2

The types of electromagnetic waves, their uses and dangers, from radio to gamma rays. This free middle 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 8 · Science

Score___ / 16

Name

Class

Date

Learning goal: The Electromagnetic Spectrum · NGSS MS-PS4-2

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

Example

Which waves are used to see bones?

Answer: X-rays

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 carry radio and TV signals?
  2. 6Which waves have the highest energy?
  3. 7Can electromagnetic waves travel through empty space?
  4. 8Which electromagnetic waves can we see?
  5. 9Which waves cause sunburn?
  6. 10Which waves do we feel as heat?
  • AVisible light
  • BYes
  • CGamma rays
  • DRadio waves
  • EInfrared
  • FUltraviolet
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

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

  3. 13

    Which waves have the longest wavelength?

  4. 14

    Why are X-rays and gamma rays dangerous?

  5. 15

    Which color of visible light has the longest wavelength?

  6. 16

    Which waves are used to cook food quickly?

★ Challenge corner for fast finishers

If Earth stopped spinning, how long would one day (sunrise to sunrise) be?

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/8/em_spectrum

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

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  • Works well as a bell-ringer, exit ticket, homework set or quick quiz.
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Does this Grade 8 Electromagnetic Spectrum worksheet come with answers?

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