This printable word search puzzle contains 20 hidden words in a 24x24 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
Ultraviolet light
Short wavelength
Long wavelength
Color spectrum
Infrared light
Visible light
Ozone layer
Radio waves
Atmosphere
Microwaves
Gamma ray
Radiation
Photons
Energy
Violet
Yellow
Orange
Green
Blue
Red