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Magnets can be found in many objects used everyday. Not only are they located in man-made objects, but magnetic materials can be found in nature as well. Students will gain general information about magnetism, as well as concepts about atoms and the relationship between electricity and magnets. Part of the Real World Science series.
(Source: DCMP)
Currents in the Pacific Ocean have brought derelict fishing nets and gear to the waters around the Hawaiian islands. These nets are a safety hazard to ships and cause extensive damage to the ecosystem by snagging on coral reefs, entangling wildlife, and polluting shorelines. Instead of adding these nets to already congested landfills, Hawaii’s multi-partner marine debris group came up with a unique program to downcycle this marine debris into usable electricity.
In a gas turbine, the linear motion of gas causes rotors to spin, ultimately creating electricity. The forward rotating blades pump air under high pressure into the combustion chamber where natural gas ignites on contact with the air. At 1,500 degrees Celsius, the stream of gas rushes past the rear turbine blades, causing the entire rotor to spin. A generator transforms that rotational energy into electricity.
Harnessing energy from the waves of the world’s oceans seems like the ultimate in renewable fuel. With funding from the National Science Foundation, Electrical engineer Annette von Jouanne is leading efforts to capture wave energy, by creating simple, powerful devices that can withstand heavy winds, monster waves, and corrosive salt water. Oregon State University research now underway is based on ocean buoy generators. As ocean swells hit the buoy, electrical coils inside move through a magnetic field, inducing a voltage, and creating electricity.
Caveman Zog wonders where does energy come from. As a caveman living long ago he knows that light and heat energy can come from the sun or burning firewood. But now he travels through time to learn that in our world we have many other sources such as oil, coal, natural gas, geothermal, nuclear, falling water, wind, and solar cells, and how some of these are used in power plants to turn generators to make electricity.
Part of the "A 3-D Demonstration" series. Defines electric power and explores in general terms a variety of means by which it is produced, transmitted, and consumed. Discusses energy conservation in relation to power production, transmission, and consumption with a particular focus on the efficiencies and inefficiencies associated with the conversion of electricity to light. Specific modules include Efficiency I: Power Production, Power, Efficiency II: Power Transport, Power Transmission, Power Consumption, Inefficiency I: The Light Bulb, and Inefficiency II: The Fluorescent Bulb. Correlates to all National CTE Organizational Standards (including the provisions of the Perkins Act).
Part of the "A 3-D Demonstration" series. Traces the relationship between magnetism and electricity from the first accidental discovery of induced current. Introduces the concepts of electric and magnetic fields and explores their representation. Examines the features of coils and solenoids to develop the construction of practical electromechanical devices, such as solenoid switches and electromagnets. Also introduces hand rules to help determine the alignment of currents and fields. Specific modules include Electric Fields, Magnetism, Magnetic Fields, Electromagnetism, Left-Hand Rule, Electric Coils, Solenoids, Solenoid Switches, and Electromagnets. Correlates to all National CTE Organizational Standards (including the provisions of the Perkins Act).
Adabot meets James Prescott Joule and learns all about the joule, a unit which measures work. Part of the "Circuit Playground" series.
Explains why Earth is precious and how it is being damaged. Special attention is paid to how individuals can conserve natural resources and care for the planet.
Play with John’s foot and arm to explore when he gets a zap!
(Source: PhET Interactive Simulations)
Adabot wants to know how a light-emitting diode (LED) works. Billie, the blue LED, helps answer the questions. Part of the "Circuit Playground" series.
Semiconductors are in everything from cell phones to rockets. But what exactly are they, and what makes them so special? Find out from an electrical engineer. Part of the "Science Out Loud" series.
Introduces physics concepts as they relate to mechanics, optics, and electricity. Supports the learning of these concepts in tandem with the textbooks also offered by the publisher. Encourages hands-on activities.
Magnets are unusual and fun tools that serve many useful purposes. Students learn the characteristics and behavior of magnets. Special emphasis is given to electromagnets and the importance of magnets in generating electricity. Concepts and terminology include bar magnet, pole, magnetism, magnetic field, repel, attract, and compass.
Adabot learns about electromagnetic energy with the help of a new friend, Mr. Heinrich Hertz. Part of the "Circuit Playground" series.
Hans, the integrated circiuit (IC), stops by the lab and explains the role of ICs in an electrical circuit. Part of the "Circuit Playground" series.
Adabot and Minerva are having difficulty talking with one another over the walkie-talkies. There is too much "noise." Minerva helps Adabot understand the phenomena of electrical noise. Part of the "Circuit Playground" series.
Adabot learns all about diodes and their role in an electrical circuit. Diodes act as a safety feature and ensure the electrical current flows in the correct direction. Part of the "Circuit Playground" series.
Arizona gets plenty of sunlight, and researchers there are working hard to turn that energy into electricity. At Arizona State University, graduate student Brad Brennan makes and tests new materials that will allow industry to build smaller, cheaper, flexible photovoltaic solar cells that can go almost anywhere.
What is frequency? Why is it so important for radio and sound waves? Adabot gets all the answers from Ladyada and a new friend. Part of the "Circuit Playground" series.
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A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre
