Cool Labs

Lab #37.4 Magnetism: Generator Activator
Lab #37.4 Magnetism: Generator Activator

Purpose In this activity, students will investigate electromagnetic induction, the principle behind electric generators. Discussion In 1820, Hans Christian Ørsted found that electricity could create magnetism. Scientists were convinced that if electricity could create magnetism, magnetism could create electricity. Still,...

Lab #36.8 Magnetism: Motor Madness
Lab #36.8 Magnetism: Motor Madness

PurposeIn this activity, students will investigate the principles that make electric motors possible. DiscussionPerhaps the most important invention of the 19th century was the electric motor. You use a motor whenever you use electric power to make something move. A...

Lab #36.5 Magnetism: Electric Magnetism
Lab #36.5 Magnetism: Electric Magnetism

PurposeIn this activity, students will investigate the electric origin of magnetic fields.DiscussionIn Magnetic Personality, you investigated the magnetic field around various configurations of bar magnets. But where does the magnetic field come from? What's going on inside a bar magnet...

Lab #36.2   Magnetism: Seeing Magnetic Fields
Lab #36.2 Magnetism: Seeing Magnetic Fields

PurposeIn this activity, students will explore the patterns of magnetic fields around bar magnets in various configurations.DiscussionA magnetic field is a kind of aura that surrounds magnets. Although it can't be seen directly, the overall shape of the field can...

What is a Magnet?
What is a Magnet?

In this investigation, students will first experiment with an ordinary bar magnet and describe its effects on a compass and a tube of iron filings. The second part of the lab challenges students to create a temporary magnet out of...

Light a Bulb Inquiry
Light a Bulb Inquiry

This simple inquiry lab challenges students to light a mini bulb using only a battery and one short wire. Even students who have seen circuit diagrams may be stumped when they have only one wire. Students will also discover how...

Genecon and Lost Energy
Genecon and Lost Energy

Talk about hands on! Students love interacting with Genecons. There's such a direct connection between cranking the handle and producing electricity. In my energy conservation unit, for example, students can experience energy as electrical current plus heat, sound and electromagnet...

Lab #35.1   Electricity and Magnetism: Batteries and Bulbs
Lab #35.1 Electricity and Magnetism: Batteries and Bulbs

Lab #35.1   Electricity & Magnetism: Batteries & BulbsPurposeIn this activity, students will explore various arrangements of batteries and bulbs, and the effects of those arrangements on bulb brightness. DiscussionMany devices include electronic circuitry, most of which are quite complicated....

Lab #34.1   Electricity and Magnetism: Ohm, Ohm on the Range
Lab #34.1 Electricity and Magnetism: Ohm, Ohm on the Range

PurposeIn this experiment, students will arrange a simple circuit involving a power source and a resistor. They will attach an ammeter and a voltmeter to the circuit. They will measure corresponding values of current and voltage in the circuit. They...

Magnetic Fields around Magnets
Magnetic Fields around Magnets

Students will make observations of bar and horseshoe magnets, using iron filings or magnetic chips to map the field. The filings will be close together where the field is strong, and farther apart where it is weak. Lines will form,...

Series Circuits
Series Circuits

Several properties of a series circuit will be demonstrated in this experiment. The primary concepts to be covered are: Lamps in series reduce current flow. Lamps in series increase the total resistance of the circuit. The voltage across each bulb...