Electromagnetic Spectrum
A. Radio Waves
B. Infrared Radiation
C. Visible Radiation (Light)
D. Ultraviolet Radiation
E. X-Ray
F. Gamma Radiation
Electromagnetic Spectrum Notes
EM Spectrum Review Questions (Note: The questions concerning color combinations WILL NOT be on the February Test)
Wave Equation Practice
| Wave Equation | Wave Equation Triangle | Units for Equation |
| v = λ • f |
 |
v (velocity) = m/s λ (wavelength) = m f (frequency) = Hz |
Wave Equation Practice
To see the work and the answers, click and drag in the boxes.
| Question | Work | Answer |
| 1. What is the velocity of a wave that has a frequency of 2 Hz and a wavelength of 10 m? | v = λ • f v = 10 • 2 |
v = 20 m/s |
| 2. What is the frequency of a wave that has a wavelength of 5 meters and a velocity of 200 m/s? | f = v / λ f = 200 / 5 |
f = 40 Hz |
| 3. What is the wavelength of a wave that has a velocity of 50 m/s and a frequency of 5 Hz? | λ = v / f λ = 50 / 5 |
λ = 10 m |
| 4. What is the velocity of a wave that has a wavelength of 100 cm and a frequency of 2 Hz? | v = λ • f 100 cm -> 1 m v = 1 • 2 |
v = 2 m/s (v = 200 m/s if you didn't convert) |
| 5. What is the frequency of a wave that has a wavelength of 200 mm and a velocity of 10 m/s? | f = v / λ 200 mm -> 0.2 m f = 10 / 0.2 |
f = 50 Hz (f = 0.05 Hz if you didn't convert) |
| 6. What is the wavelength of a wave that has a frequency of 50 cHz and a velocity of 100 m/s? | λ = v / f 50 cHz -> 0.5 Hz λ = 100 / 0.5 |
λ = 200 m (λ = 2 m if you didn't convert) |
| 7. Two waves are traveling with a wavelength of 2 meters. Wave A has a frequency of 20 Hz. Wave B has a frequency of 40 Hz. Which wave has the greatest speed? | Wave A v = λ • f v = 2 • 20 = 40 m/s Wave B v = λ • f v = 2 • 40 = 80 m/s |
Wave B has a greater speed |
| 8. Three waves are traveling with a frequency of 10 Hz. Wave A has a wavelength of 2 m. Wave B has a wavelength of 50 cm. Wave C has a wavelength of 100 m. Rank these waves in order from slowest to fastest speed. | v = λ • f Wave A v = 2 • 10 = 20 m/s Wave B 50 cm -> 0.5 m v = 0.5 • 10 = 5 m/s Wave C v = 100 • 10 = 1000 m/s |
Slow to fast: B -> A -> C |
| 9. What is the wavelength of a wave that has a frequency of 1000 cHz and a velocity of 200 km/s? | λ = v / f 1000 cHz -> 10 Hz 200 km/s -> 200,000 m/s λ = 200,000 / 10 |
λ = 20,000 m |
| 10. What is the frequency of a wavelength of 0.025 hm and a velocity of 50 m/s? | f = v / λ 0.025 hm -> 2.5 m f = 50 / 2.5 |
f = 20 Hz |