This page defines electromagnetic radiation. Included are links to more information.

Learners investigate images of Hurricane Katrina as it moved through the Gulf of Mexico in August 2005. The resource has students examine images, infrared radiation, water vapor, and visible radiation to plot and measure the path of...

This online exploration provides an opportunity to identify the different properties of waves and the relationship that exists between energy, wavelength, and frequency. Correlate images from the Hubble Telescope to the wavelength,...

Kansas State University site explaining all aspects of LASERS. The site is set up as an online book with clickable chapters.

Discusses the methods the human body uses to regulate body temperature. Includes links to the four external heat transfer mechanisms (radiation, conduction, convection, and evaporation of perspiration).

Solar flares are huge explosions on the Sun that emit lots of electromagnetic radiation.

Contains some pictures and a brief description of how a Geiger Counter functions.

This site from IPAC is a series of images of various celestial objects and regions as viewed in infrared light. Each photo is accompanied by a caption.

Radiation from the sun sustains life on earth and determines climate. The energy flow within the sun results in a surface temperature of around 5800 K, so the spectrum of the radiation from the sun is similar to that of a 5800 K...

This lesson will introduce isotopes, and explain how they differ from other elements. It will also show that some isotopes are unstable and emit particles and/or radiation. It is 5 of 9 in the series titled "Isotopes."

The innovative resource compares snow and ice cover in the Northern Hemisphere over a period of 24 years. The images are obtained from satellite measurements of visible and microwave radiation. The activity has an interactive online...

[Free Registration/Login may be required to access all resource tools.] Explains how and why gamma decay occurs, what gamma rays are, and why gamma radiation is the most harmful.

Using zip codes, this site allows students to locate businesses in their communities that are producing wastes.

Watch alpha particles escape from a polonium nucleus, causing radioactive alpha decay. See how random decay times relate to the half life. Java required.

Follow the progression of a malignant tumor, beginning with the first mutation within a cell and ending with metastasis, the colonization of related tumors throughout the body.

NOAA has produced a series of topic papers for use by teachers and students. This paper is on the increase of radio wave activity and the effects solar emissions have on it. PDF format.

Visible light waves are the only electromagnetic waves we can see. We see these waves as the colors of the rainbow. Each color has a different wavelength. Red has the longest wavelength and violet has the shortest wavelength. When all...

Site from NASA explaining the construction and use of a Geiger counter. The site has links to many related topics, such as plasma, ions, and electrons.

What is a laser? Illustrated discussion of lasers includes how they work and how they are used.

Ultraviolet (UV) light has shorter wavelengths than visible light. Though these waves are invisible to the human eye, some insects can see them. The specific wavelength values are given. Uses and applications of these waves are explained.

What is heat? Illustrated discussion of how heat is transferred and its effect on the states of matter.

This article has information about the bombings of Hiroshima and Nagasaki. Additional information about the measures that have been taken about atomic warfare and testing since the bombings included.