Teacher directed activity shows students how flowing electrical current produces a magnetic field by building a simple motor.

Create a simple device to see how a force is exerted on a current by a magnetic field. This activity shows how an electric motor can be made with this force.

Help Rozalia clean her Pizzeria kitchen by using different methods to sort out mixtures.

Apart from the piezo generator, all of these generators are based on the same simple design, where magnets are rotated near to coils of wire (Faraday Induction). There is no coil switching so these are AC generators. On magnet movement,...

An electrical generator is in essence a very simple device - magnets rotating within a coil of wire. To get a generator to work properly, one needs to make sure the coil and magnet orientation and rotation are correctly aligned. These...

This very simple, but effective generator shows in a wonderfully engaging way the fundamentals of electricity generation. The generator is made from a coil of wire wound around the outside of a plastic 35mm-film can. The two coil ends...

How do scientists "copy" DNA? They use a process called the Polymerase Chain Reaction, or PCR. The key to making this process work is having a primer that will stick to the piece of DNA you want to copy, called a template. In this...

Solar cells provide a clean way of making electricity directly from sunlight. In this project you will build a simple circuit and experimental setup to investigate whether the power output of a solar cell changes with ambient temperature.

Here you can find what you need to scientifically assess battery performance. In this exercise (that should take about one week) learn how batteries work, how they wear out and most importantly, how to make valid measurements to assess...

Shake N' Light flashlights have been advertised on televisions across the nation in the recent year. But many do not understand just how they get energy to light up the bulb without using batteries. Do this experiment to make your own...

Batteries are expensive to purchase in a store, but you can make one your self for exactly 24 cents. In this experiment, you will make your own voltaic pile using pennies and nickels and determine how many coins in a pile will make the...

Instructional module focusing on the development of plate tectonic theory. Discussion includes the evidence of Pangaea, and the processes of seafloor topography and seafloor spreading. Site also includes an interactive practice quiz and...

A timeline from prehistory to modern days of advances in optics and related disciplines, and of the people responsible for them. The timeline is categorized into distinct spans of time, each accompanied by extensive information.

[Free Registration/Login may be required to access all resource tools.] Covers what electromagnetic induction is, how it occurs, the current produced from it, and how it is used.

You can use a bar magnet and a compass to get a rough idea of the strength of Earth's magnetic field. Read this article to find out how!

A NASA space scientist provides 98 questions and answers about the sun, the center of our solar system.

There is a secret mysterious force in your home right this very moment! Try these activities to first identify that force and then extend your knowledge of the force by investigating the other activities provided.

In this interactive tutorial students will learn about a magnetic flux, induced current and how to apply Lenz's Law.

The telephone and first practical incandescent light bulb are invented while the word "electron" enters the scientific lexicon.

The Industrial Revolution is in full force, Gramme invents his dynamo and James Clerk Maxwell formulates his series of equations on electrodynamics.

The legendary Faraday forges on with his prolific research and the telegraph reaches a milestone when a message is sent between Washington, DC, and Baltimore, MD.

Defense-related research leads to the computer, the world enters the atomic age and TV conquers America.

An experiment to find out how an old-style doorbell works.

[Free Registration/Login Required] An informational text about how a compass works using electromagnetic force. A question sheet is available to help students build skills in reading comprehension.