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13 Cards in this Set
- Front
- Back
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why do people put lightning rods on the top of buildings?
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a lightning rod is put on the roof of a building to carry the electricity away from the building
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what happens when an object loses some of its electrons?
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the bottom piece had many fewer electrons than it started with so it had more positive electrical charge
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what are protons?
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a partical of matter smaller than an atom that carries a positive charge
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what do atoms have the same amount of?
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atoms usually have the same number of protons and electrons
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what are electrons?
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electrons are a partical of matter much smaller than an atom and has one negative charge
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if an object which a charge is held next to an object without a charge, what will happen?
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it will pull together.
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what is static electricity?
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an excess of non-moving electrick charge in one place, caused by an excess or a lack of electrons
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If two objects push each other away, they both have what type of charge?
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The same charges push away from each other.
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what is an atom?
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the smallest piece of an element that still has the properties of that element
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how have energy sources changed over time?
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human power, animal, power, sind or water power, steam power have changed to gasoline energy power and electrical energy
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what is grounding?
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discharging an electric charge to Earth
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what things do static electricity cause?
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clothes sticking together when they come out of the dryer
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What is lightning?
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big amounts of static electricity
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