8 original questions from New Regents. The worksheet, answer key, and browser practice are free.
Electromagnetic Spectrum 4 questions
Electromagnetic Spectrum
New Regents original practice • Name: ____________________ Date: __________ Show your work for written answers.
Use the electromagnetic spectrum in the 2025 Chemistry Reference Tables. Compare wavelengths in the same units.
Question 1
Which type of radiation has shorter wavelengths than visible light?
- Radio waves
- Microwaves
- Infrared radiation
- Ultraviolet radiation
Question 2
Place infrared, visible, and ultraviolet radiation in order from longest to shortest wavelength. Use the spectrum to explain your ordering.
Write your answer and work on the printable worksheet, or answer online.
Question 3
Convert 1.20 × 10⁻⁶ m to nanometers. Use 1 nm = 10⁻⁹ m.
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Question 4
Which property is common to all electromagnetic waves traveling through a vacuum?
- Speed
- Wavelength
- Frequency
- Photon energy
Sources for Optical Sensors 4 questions
Sources for Optical Sensors
Use the information below to answer the questions.
An engineer compares four light sources. One sensor is sensitive to wavelengths from 800 to 1,000 nm. A second sensor is sensitive to wavelengths from 270 to 310 nm.
| Source | Peak wavelength (nm) |
|---|---|
| P | 290 |
| Q | 530 |
| R | 940 |
| S | 1,250 |
Question 5
Which source has a peak within the first sensor’s range?
- P
- Q
- R
- S
Question 6
Identify the part of the electromagnetic spectrum that contains source P’s peak. Explain using its wavelength.
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Question 7
Which source peaks in the visible region of the reference spectrum?
- P
- Q
- R
- S
Question 8
Can one of these sources have its peak in both sensor ranges at once? Use the given ranges to explain.
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