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Kiewit Electricity
Kiewit Middle Electricity
| Question | Answer |
|---|---|
| What tiny particles make up all matter. | atoms |
| What charge do protons have? | positive |
| What charge do electrons have? | negative |
| According to the law of electric charges, like charges will..... | repel |
| According to the law of electric charges, unlike charges...... | attract |
| What category of materials allows the free movement of electricity? | conductors |
| What category of materials stops the flow of electricity? | insulators |
| What category of materials reduces the flow of electricity in a circuit? | resistors |
| What device is used to detect a static charge? | electroscope |
| The part of a cell where charges either enter or exit is called a/an: | electrode |
| In what kind of circuit is there only one pathway for current to move? | series |
| In what kind of circuit are there more than one path that the current can take? | parallel |
| In a circuit, if you increase voltage, what happens to current? | it increases too |
| What three basic parts are needed for a circuit? | energy source, a load, wires |
| What creates the attraction or repulsion between charged objects? | the electric force |
| What three dimensional (3-D) region occurs around the electric force? | the electric field |
| Glass, wood, and air are all good examples of.... | insulators |
| Metals, people, and water are all good examples of......... | conductors |
| One factor that affects the amount of attraction or repulsion between objects is... | the distance between them. |
| One factor that affects the amount of attraction or repulsion between objects is... | the size of the charge on the objects |
| What method of charging results from two surfaces rubbing together? | friction |
| What method of charging results from two objects near each other? | induction |
| What method of charging occurs when two objects are in contact? | conduction |
| What device creates electrical energy from chemical energy? | a cell |
| Current is...... | the rate at which charges pass a given point |
| Most of the power that you use in your home comes from....... | power plants |
| The best conductors have the very lowest.... | resistance |
| A load is a device that...... | uses electricity to do work |
| The fancy name for voltage is: | potential difference |
| Thin wires have.... | high resistance |
| Thick wires have.... | low resistance |
| Short wires have.... | low resistance |
| Long wires have.... | high resistance |
| Besides length, material, and thickness, what else can affect resistance? | temperature |
| Electricity at rest is called: | static |
| The liquid or paste-like part of a cell is called the: | electrolyte |
| What type of cell converts light to electricity? | photocell |
| As the resistance in a circuit increases, what happens to current: | it decreases |
| What kind of switch will open if the current in it's circuit is too high? | circuit breaker |
| What device creates electrical current due to a difference in temperatures? | thermocouple |
| Lightning and getting a shock from a doorknob are examples of..... | electrical discharge |
| Which law establishes a relationship between resistance, voltage, and current? | Ohm's law |
| What is the formula for Ohm's law? | R=V/I |
| In Ohm's law what variable is represented by "R"? | resistance |
| In Ohm's law what variable is represented by "I"? | current |
| In Ohm's law what variable is represented by "V"? | voltage |
Created by:
Mr. Kucera
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