[Free Registration/Login may be required to access all resource tools.] A breakdown of the types of energy that Earth receives from the sun.

A detailed overview of the greenhouse effect, with explanations about Earth's atmosphere gases referred to as greenhouse gases, and the factors that influence the heat-trapping ability of a greenhouse. All information is reinforced...

This Imagine the Universe site provides an introduction into the multiwavelength universe and astronomy. Site provides graphics, links to a quiz, facts on this topic as well as teacher resources.

View the entire spectrum of electromagnetic radiation and get information on telescopes especially designed to view different wavelengths of the spectrum.

Here is a 1-5 day unit on electromagnetic radiation that features a teacher guide and student activities with extensions.