1765965
Description
Flashcards by Mari Chambers, updated more than 1 year ago
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Created by Mari Chambers
over 9 years ago
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| Question | Answer |
| Examples of Insulators | Acetate, rubber, wool, glass (non-metals) |
| Examples of conductors | Metals |
| What is a conductor? | A material that allows electrons to move freely on and through them |
| What is an insulator? | Materials that do not allow electrons to move easily on or through them |
| Identify and describe the types of static charges. | Negative charge (more electrons than protons), neutral charge (equal electrons and protons), positive charge (more protons than electrons) |
| How does the amount of charge and distance of separation affect the force between charges? | Greater amounts of charges and smaller distances of separation strengthen the force between charges. |
| How do charged objects interact? | Charged objects will either repel (like charges) or attract |
| What are the three laws of static charge? | 1.) Like charges repel 2.) Opposite charges attract 3.) Neutral charges are attracted to either charge |
| How are static charges distributed on the surface of an object? | Electrons are transferred, changing the charge on an object |
| How can static charge be detected using an electroscope? | When a neutral electroscope is charged by a negatively charged rod, electrons are added to the electroscope and spread over the surface of the metal leaves, becoming negatively charged, repelling each other. |
| Define acetate. | A type of plastic used for photographic film and overhead transparencies |
| Define coulomb | A unit used to measure electric charge |
| Define electron | A negatively charged particle found on the outer shell of an atom |
| Define grounding | Electric charge flowing into Earth's surface |
| Define static charge | Electric charge that can be collected and held very nearly fixed in one place |
| Define Van de Graaff generator | A device that uses friction to produce a large static charge on a metal dome |
| Compare the position of the leaves while a charged object touches the knob of the electroscope with the position of the leaves when the charged object was removed. | Touching-leaves repel Removed-leaves did not repel |
| Give the name and charge of the three particle types in an atom | Electron-negative Neutron-neutral Proton-positive |
| Where are each of the three particles in an atom? | The protons and neutrons are located in the nucleus and electrons are located on the outer shell |
| When is an atom uncharged or neutral? | When the amount of protons and electrons is equal |
| How are solid materials charged? | The transfer of electrons |
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