[Free Registration/Login Required] Virtually test three materials to see which one generates the most electricity. After the activity, answer one challenge question to check for understanding.

Electricity is a very convenient form of energy that can be generated using different energy resources. Some of these resources are renewable and some are non-renewable. Each resource has advantages and disadvantages. A link to a test is...

Learn how scientists regulate a nuclear reactor in this animation-enhanced essay from the FRONTLINE Web site.

This site, in German, offers numerous apps that illustrate common physics principles. Apps are organized into categories: mechanics, oscillations and waves, electrodynamics, optics, thermodynamics, the theory of relativity, physics of...

What is hydropower? Discover how electricity is generated from hydropower, three methods of generating electricity, and the advantages and disadvantages.

What is tidal energy? Learn about using tides to generate power, methods of generating electricity, and the advantages and disadvantages of tidal energy.

Generating technologies for deriving electrical power from the ocean include tidal power, wave power, ocean thermal energy conversion, ocean currents, ocean winds and salinity gradients. Of these, the three most well-developed...

Holy cow! A 2000-year-old wet cell battery which really works. Found just outside Baghdad, it generates 1.1 volts of electricity. Isn't life amazing?

This lesson will explain the advantages and disadvantages of generating electricity from various forms of energy. It is 2 of 4 in the series titled "Energy Forms."

This lesson will explain the advantages and disadvantages of generating electricity from various forms of energy. It is 3 of 4 in the series titled "Energy Forms."

This lesson will explain the advantages and disadvantages of generating electricity from various forms of energy. It is 4 of 4 in the series titled "Energy Forms."

This lesson will explain the advantages and disadvantages of generating electricity from various forms of energy. It is 1 of 4 in the series titled "Energy Forms."

Find out about the renewable energy resource using biomass technologies. Learn about the three main types of biomass and how the stored energy from the sun is captured for use.

Find out about renewable energy resources using geothermal technologies as the source. Learn how scientists have discovered how to utilize sustainable heat from the Earth using several methods.

Find out about the renewable energy resource using wind energy technologies. Learn about the use of wind for a stand-alone system, and how one uses it in large-scale wind farms.

This incredible photo shows the rare occurence of lightning that forms from the generation of electrical charges inside the ash plumes of an erupting volcano.