Physical Science Chapter 10 Study Guide
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Created by:
Sydney3710 on February 6, 2012
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34 terms
Terms | Definitions |
|---|---|
 insulator | Rubber makes a great __________________. That is why power lines are coated in rubber. |
| static | Stationary electricity is also called ________ electricity. |
| battery | A __________ consists of one or more electrochemical cells that supply electrons released by a chemical reaction. |
| wet, dry | There are two types of cells for batteries; a ________ cell and a _________ cell. |
| circuit breaker | Most houses have between ten and forty circuits protected by ________ _________ switches that automatically trips if too much current flows through it. |
| lightning rod | A device used to protect buildings from lightning is called a ___________ ______. |
| switch | A ________ allows you to open or close the circuit by opening or closing a gap in the current path. |
| electrons | An electrical charge is usually produced by the removal or addition of __________. |
| ampere | Electrical current is measured in a unit called the ______________. |
| kilowatt hours | Electrical energy is dispensed and billed in units called __________-________. |
| series circuit | When loads are connected one after another on the same path it is called a __________ _________. |
| generator | A _______ is basically one or more coils of wire rotated in a magnetic field by some form of prime mover such as a motor or tubine powered by steam, water or wind. |
| direct current | Current that flows in one direction through a conductor is called _______ _________. |
| resistor | A device that can change the voltage within portions of a circuit is called a ____________. |
| attracted | When two objects with opposite charges approach each other, they are ________ to each other. |
| electroscope | Charges can be detected with an instrument called an _______________. |
| like, opposite | The Law of Charges states that _________ charges repel; _________ charges attract. |
| Ohm's Law | The statement, "In a DC circuit component of resistance, the current through the component is directly proportional to the potential difference applied to the component", is known as _______ _______. |
| electrical current | Electricity that involves continuously moving charges is called ________ _________. |
| semi conductors | Materials that allow limited elctron flow or conduct only under certain conditions are called _______-________. |
| ohms | Resistance is measured in units called ________. |
| fuses | Older homes with original wiring may use _______ as a protective device. |
| parallel circuit | In a ________ ________ the loads are connected in separate branches of the circuit. |
| lightning | __________ strikes on the earth about one hundred times every second. |
| Laden jar | A ________ ____ is an early device used to store electrical charges. |
| ground fault circuit interrupter | The rounded third prong on a standard plug is the ______-______-_______ ___________ device. |
| electrical circuit | The path that the current flows is called the _________ ______. |
| coulomb | The SI unit for electrical charge is the _________. |
| repel | When two objects with the same charge approach each other, the objects _______ from each other. |
| volt | We measure the potential difference with a unit called the ________. |
| solar cells | Photovoltaic devices are also called ________ _______. |
| electrical discharge | The loss of static charge as electrons move to another object is called ___________ __________. |
| capacitors | Modern charge-storing devices are called __________. |
| conductors | Wood, glass and rubber are not good ________ of electricity. |
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