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PVES Week 7
Electricity
| Question | Answer |
|---|---|
| A continuous flow of negative charges, (electrons) creates an __________ ______________. | electric current |
| The pathway taken by an electric current is a _________. | circuit |
| ___________ circuits allow the movement of electrical energy. | closed |
| ____________ circuits prevent the movement of electrical energy. | open |
| The flow of electricity is called a_________. | current |
| Negative charges are called ___________. | electrons |
| _________ energy can be transformed into thermal, light, or mechanical energy. | electrical |
| A material that allows electricity to flow through it is a___________. | conductor |
| ____________ are examples of a conductor. | metals |
| A material that does NOT allow electricity to flow through it is an_____________. | insulator |
| What are three examples of insulators? | rubber, plastic, wood |
| A circuit that has only one pathway for the current to pass through is a ________ circuit. | series |
| A circuit that has two or more pathways for current to pass through is a___________ circuit. | parallel |
| The symbol (+) stands for the _________side of a dry cell. | positive |
| The symbol (-) stands for the _________ side of a dry cell. | negative |
| The invisible push and pull force of a some materials, such as lodestone, is called__________. | magnetism |
| If the north pole of a magnet is placed near the south pole of a magnet, the two magnets with ________ each other. | attract |
| If the north poles of two magnets are placed near each other , the two magnets will________each other. | repel |
| An ______________ can be created by winding wire around an iron bar and connecting it to a battery. | electromagnet |
| The concentrated area of magnetism that runs from the north to south poles of a magnet is a _________ field. | magnetic |
| The discharge of static electricity in the atmosphere is _________. | lightning |
| An electric current creates a _________ field. | magnetic |
| A moving magnetic filed creates an ________ current. | electric |
| Materials that naturally attract iron, cobalt and nickel are _______. | magnets |
| Which inventor used electrical energy as a power source for light bulbs? | Thomas Edison |
| Which American inventor discovered that lighting was static electricity when he conducted his famous kite experiment? | Benjamin Franklin |
| _________ __________ was an English physicist who discovered that magnets can create an electric current. | Micheal Faraday |
| Rubbing certain materials together can create _________ electricity. | static |
| The rate at which energy flows through a material, depends on its__________. | resistance |
| Iron, nickel, and cobalt are all _________. | metals |
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