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19 Cards in this Set
- Front
- Back
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Grounding |
Connecting a charged object to the ground; it loses its static charge. Electrons are either tranfered from the ground to the rod or from to rod to the ground |
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Electrical discharge |
When an object loses some of its static charge to another object or material. |
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The 3 laws of static electricity |
1) objects of like charges will repel each other 2) objects of opposite charges will attract each other. 3) charged objects will attract some neutral objects |
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What charge do protons have? |
Positive |
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What charge do neutrons have |
None |
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What charge do electrons have |
Negative |
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Which of the subatomic particles can move easily from one object to another |
Electrons |
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How do objects become negatively charged? |
The lose electrons to another object |
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How do objects become positively charged? |
The gain electrons from another object |
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Why is the type of electricity we've studied called "static" rather than "current" |
Static electicity involves charges that are not moving, whereas current electricity involves moving charges |
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What is the electrostatic series? |
A list of materials ordered from the strongest hold on electrons to the weakest |
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Which elements are insulators? |
Non metals |
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Which elements are conductors |
Metals |
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Which elements are insulators and conductors based on scientific conditions? |
Semi metals (metalloids) |
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Why can you lose your static charge just by touhing a metal pipe attatched to the earth? |
You are grounding yourself, tranfering your static to the pipe and into the ground. |
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Why is lightning simply electrical discharge on a grand scale? |
Lightning occurs because so much static charge has built up in a cloud that the electons will jump the between the clouds and the ground, releasing a large amount of energy. |
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How do you charge an object by contact |
This occurs when a charged object touches a neutral object, transfering electrons between the two. Both objects will have the same charge. |
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How do you temporarily charge an object by induction? |
Thus occurs when a charged object is brought close to a neutral, grounded object (not touching it). The charged object forces electrons to move from the neutral object to the ground or vice versa. Giving the object a temporary charge. |
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Why do the leaves of an electroscope respond when the metal sphere is touched by a charged rod? |
Electrons are either transfered to or from the rod. This leaves each leaf with the same charge so they repel each other |
