I've found that learning about Electromagnetic waves and the EM spectrum is one of the most challenging tasks for my students. This is a graphic organizer over the waves in the EM spectrum. Students will cut and sort the facts (uses, characteristics, and wavelengths) into the corresponding column on a separate page.
I've found this to be very useful to introduce waves and later on for review. Quite often, I've witnessed students looking at it on their own during extra study time.
An answer key is provided.
SAMPLE: (Radio Waves) USES - Used to transmit signals for televisions and radios CHARACTERISTICS - Lowest frequency, Longest wavelength, Wavelengths can travel through Earth's atmosphere with ease