The Electromagnetic Spectrum
Describe the full electromagnetic spectrum from radio waves to gamma rays, in order of increasing frequency and energy; explain that all EM waves travel at the same speed in a vacuum; and describe the uses and hazards of different regions
Teaching approaches
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1 approach
If your child heard about microwaves, X-rays, and visible light all being part of the same family, could they explain what makes them different from each other and name one useful application and one risk for each?
Describe the full electromagnetic spectrum from radio waves to gamma rays, in order of increasing frequency and energy; explain that all EM waves travel at the same speed in a vacuum; and describe the uses and hazards of different regions
Learning resources
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This concept
Check understanding
- Lists the seven regions of the EM spectrum in order of increasing frequency
- States that all EM waves travel at 3 × 10⁸ m/s in a vacuum
- Gives at least one use and one hazard for each region of the spectrum
- Explains why some EM waves are more dangerous to living tissue than others (linked to frequency/energy)
“If your child heard about microwaves, X-rays, and visible light all being part of the same family, could they explain what makes them different from each other and name one useful application and one risk for each?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Waves, Light & Sound
- Age range
- Ages 12–13
Standards