An excellent site with several pages describing what electromagnetic radiation is.

[Free Registration/Login may be required to access all resource tools.] Students explore how mechanical waves are transmitted., and find out what is meant by interference and intensity of sound waves.

In this lesson, students learn about echolocation: what it is and how engineers use it to "see" things in the dark, or deep underwater. Also, they learn how animals use echolocation to catch their dinner and travel the ocean waters and...

Students are introduced to an engineering challenge in which they are given a job assignment to separate three types of apples. However, they are unable to see the color differences between the apples, and as a result, they must think as...

Explains what earthquakes are, what causes them, the different types, tsunamis that can be caused by them, and how to prepare if living in an earthquake-prone area.

Find out why the oceans are blue and what causes waves by clicking here. There is a table of information about the four oceans as well as interesting facts on waves, salinity, and tides.

This resource features a basic definition of infrasonic. It also explains the difference between infrasonic and subsonic.

Learn what renewable energy is, the different types, and why it's important to conserve energy.

[Free Registration/Login may be required to access all resource tools.] What wavelength is and how it relates to the energy of a wave.

This site details what radiation is, the physics of radiation, and radiative transfer as it occurs in nature. Content explores the electromagnetic spectrum, electromagnetic waves, properties of radiation, and solar radiation.

This program gives students a way to combine waves together to see what properties the new wave will possess. It is helpful in looking at constructive and destructive interference. It can also illustrate beats and carrier waves.

This site is primarily set up as an outline and is loaded with graphs, maps, and images. It covers a variety of earthquake-related topics, such as what causes earthquakes, fault lines and structures, seismology, a historical look at...

[Free Registration/Login may be required to access all resource tools.] Students learn what an electromagnetic wave is, gain a feel for the main parts of the spectrum, and work on problems involving basic properties of electromagnetic...

PBS site explores radio transmission and provides a fun activity to go along with it. (Shockwave required) Click on links to discover more about the early years of radio, how radio waves are emitted, what the difference is between AM and...

[Free Registration/Login may be required to access all resource tools.] What the speed of sound is and its variation in different media, and the effect of temperature on the speed of sound.

Article goes into detail about what exactly is interference.

How can you begin to talk to your kids about the Tsunami tragedy? This site offers insight on how to deal with this difficult topic.

This site features several links to tsunami relief sites. Students and teachers can access information about the tsunami relief efforts through these resources.

This site from Yahoo! Health discusses a heart attack. Learn what you can do to prevent having a heart attack and check out images showing the parts of the heart, the build up of plaque in arteries, and ECG waves after a heart attack.

An investigation, using a ripple tank, into how waves behave when they collide with each other. With an explanation of what is observed, and a link to an article on refraction.

An experiment using Jell-O to create lenses, to see how light behaves with flat, concave, and convex lens surfaces. With an explanation of what is observed, and a link to an informative article on lenses.

Lighting is responsible for nearly one-third of the electricity use in buildings. One of the best ways to conserve energy is to make sure the lights are turned off when no one is in a room. This process can be automated using motion...

What is electromagnetic radiation and how does it work? Review a captioned graphic that explains electromagnetic radiation and the visible and invisible types of radiation on the electromagnetic spectrum.

The Sound and Light unit provides students with an understanding of sound and light waves through the theme of the "Sunken Treasure," a continuous story line throughout the lessons. In Lessons 1-5, students learn about sound, and in...