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\nVan de Graaff Generator\n

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\nWe use a Van de Graaff generator to investigate static electricity. The generator is turned on and we see a spark move between the two domes. We then place a wig on the main dome and see the hair rise as the charge builds and the hairs...\nWe use a Van de Graaff generator to investigate static electricity. The generator is turned on and we see a spark move between the two domes. We then place a wig on the main dome and see the hair rise as the charge builds and the hairs repel each other. Then a stack of metal dishes is placed on the dome and when the Van de Graaff generator is turned on they fly off one by one. Physics - Electricity And Circuits - Learning Points. Like charges repel and unlike charges attract. Electric charge can move through a conductor. Friction can create unbalanced charges by moving electrons from one material to another. The Van de Graaff generator has a continuous electron removal belt that can give the top dome a very strong positive charge. As the charge on the top dome becomes more positive, it is said to have a higher voltage with respect to its surroundings. This means that the charge on the dome has a higher electrical energy. A Twig Experiment Film. Let students experience real experiments in lab conditions anywhere, from setup, method all the way through to analysis and real-world application.\n
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Resource Details

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Curator Rating
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Educator Rating
Not yet Rated
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Media Length
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6:45
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Grade
6th - 12th
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Subjects
Science
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Media Type
Instructional Videos
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Source:
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\nImagine Learning - Twig (middle years+)\n\n
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Date
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2012
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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static electricity, electrons, repulsion
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Additional Tags

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van de graaff, generator, charged, unbalanced, positive charge, negative charge, foil dishes, unbalanced charges, metal brush, positively charged, small dome, large dome, belt, brush, dome, charge, roller, neutral, repel, atom, positive, effects, switched, turn, machine, discharge, place, effect, switch, balance, electron
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Classroom Considerations

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Best For: Explaining a topic
Video is ad-free
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