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Grade 12 Wave Speed, Frequency & Wavelength Worksheet with Answers

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

Unit 3: Waves, Light & ElectricityWaves & LightNGSS HS-PS4-1

Using v = f × λ to find wave speed, frequency and wavelength. 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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Wave Speed, Frequency & Wavelength

Grade 12 · Physics

Score___ / 16

Name

Class

Date

Learning goal: Waves & Light · NGSS HS-PS4-1

Directions: This worksheet has 2 parts. Read the instructions at the start of each part.

Example

A wave has a frequency of 30 Hz and a wavelength of 16 m. What is its speed? (v = fλ)

Answer: 480 m/s

Part A

Label the diagram. Use the words in the box.

Word bank

amplitudewavelengthcresttrough
1234
  1. 1
  2. 2
  3. 3
  4. 4
Part B

Answer each question. Use full sentences where you can.

  1. 5

    A wave has a frequency of 31 Hz and a wavelength of 20 m. What is its speed? (v = fλ)

    λ = 20 mf = 31 Hzv = ?v = f × λ
  2. 6

    A wave travels at 21 m/s with a frequency of 7 Hz. What is its wavelength?

    λ = ?f = 7 Hzv = 21 m/sv = f × λ
  3. 7

    A wave has a frequency of 17 Hz and a wavelength of 13 m. What is its speed? (v = fλ)

    λ = 13 mf = 17 Hzv = ?v = f × λ
  4. 8

    A wave travels at 324 m/s with a wavelength of 9 m. What is its frequency?

    λ = 9 mf = ?v = 324 m/sv = f × λ
  5. 9

    A wave travels at 672 m/s with a wavelength of 14 m. What is its frequency?

    λ = 14 mf = ?v = 672 m/sv = f × λ
  6. 10

    A wave travels at 186 m/s with a frequency of 31 Hz. What is its wavelength?

    λ = ?f = 31 Hzv = 186 m/sv = f × λ
  7. 11

    A wave travels at 76 m/s with a wavelength of 4 m. What is its frequency?

    λ = 4 mf = ?v = 76 m/sv = f × λ
  8. 12

    A wave travels at 315 m/s with a frequency of 35 Hz. What is its wavelength?

    λ = ?f = 35 Hzv = 315 m/sv = f × λ
  9. 13

    A wave travels at 289 m/s with a frequency of 17 Hz. What is its wavelength?

    λ = ?f = 17 Hzv = 289 m/sv = f × λ
  10. 14

    A wave travels at 6 m/s with a frequency of 6 Hz. What is its wavelength?

    λ = ?f = 6 Hzv = 6 m/sv = f × λ
  11. 15

    A wave has a frequency of 33 Hz and a wavelength of 1 m. What is its speed? (v = fλ)

    λ = 1 mf = 33 Hzv = ?v = f × λ
  12. 16

    A wave travels at 180 m/s with a frequency of 30 Hz. What is its wavelength?

    λ = ?f = 30 Hzv = 180 m/sv = f × λ

★ Challenge corner for fast finishers

You are in a closed room with a candle, a match and a lamp. What do you light first?

How did I do?

Teacher's comments

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

Answer key (click to show)
  1. 1.crest
  2. 2.trough
  3. 3.wavelength
  4. 4.amplitude
  5. 5.620 m/s
  6. 6.3 m
  7. 7.221 m/s
  8. 8.36 Hz
  9. 9.48 Hz
  10. 10.6 m
  11. 11.19 Hz
  12. 12.9 m
  13. 13.17 m
  14. 14.1 m
  15. 15.33 m/s
  16. 16.6 m
  17. ★the match (challenge corner)

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