Examples of the Electromagnetic Spectrum

Tests love to ask which everyday device uses which kind of radiation. Anchor each region to a picture in your head and the question becomes free points.

Key Facts to Memorize

Radio

FM/AM broadcasts, Wi-Fi, cell signals, MRI machines.

Microwave

Microwave ovens, radar, satellite communications.

Infrared

TV remotes, night-vision goggles, thermal cameras, heat lamps.

Visible

Sunlight, lamps, laser pointers, anything your eyes can detect.

Ultraviolet

Sunburn, black lights, sterilizing lamps, tanning beds.

X-ray

Medical and dental imaging, airport security scanners.

Gamma

Nuclear decay, cancer radiation therapy, cosmic sources.

Al the Gator, the school mascot, wearing a lab coat with a blue D

Al says…

Walk through your house region by region: radio in the car, microwave in the kitchen, infrared in the TV remote, visible from the lamp, UV out the window.

Practice This Topic

Flash Cards

Flip through every fact, shuffle, and repeat.

Practice Quiz

Ten questions, scored instantly. Regenerate for a fresh set.

Sample Problems

Worked examples with solutions you can hide.

External Tools

Blooket review game
Coming soon — Mrs. Cauthron will post the game link here.
NASA EM spectrum tour
Photos of each region in real use.