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26 Cards in this Set
- Front
- Back
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What is Electricity?
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The movement of electrons
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What are two types of electricity?
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Static
Current |
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List 2 different ways to create static electricity
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Rubbing your feet on the carpet
Rubbing a balloon on your head |
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What is current electricity?
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It is when electrons are in motion
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What is all matter made up of?
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Tiny particles called atoms
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Where are protons of neutrons found?
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In the nucleus or center of the atom
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What is the difference between neutrons, protons and electrons
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Electrons have a negative charge; Protons have a positive charge, neutron have not charge at all
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What is an insulator?
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An insulator does not allow electricity to flow; example Rubber
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What is a conductor?
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A conductor allows electricity to flow freely; example copper
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What did Benjamin Franklin do?
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He is known for inventing the Lightning Rod, and proved that Lightning is actually electricity.
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What did Samuel Morse do?
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He invented the Telegraph which could send messages through electricity by using a code called The Morse Code.
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What did Thomas Edison do?
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He was one of the greatest inventors in the history of our country. He is known for inventing the lightbulb, phonograph and worked on improving inventions of others.
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What is a battery?
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Electricity flows from one end of a power source, battery, around the circuit, and then back to the other end of the power source (battery).
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What is a Circuit?
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A path along which energy flows. Remember "circle"
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What is an Open Circuit?
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A path with an opening.
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What is a Closed Circuit?
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A path with no openings.
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What is a conductor?
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Materials (metal)that allows electricity to flow.
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What is an insulator?
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Materials that do not allow electricity to flow.
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What is a parallel circuit?
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A circuit with more than one path for electricity to follow. If one bulb burns out, the other bulb will still be able to light up.
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What is a series circuit?
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A circuit with only one path for electricity to follow. If one bulb burns out, the other bulb goes out as well.
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What is a switch?
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A device used to open and close circuit
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What is code?
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A set of signals used to represent words.
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What is a key?
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A switch used to complete the circuit in a telegraph system.
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What is Technology?
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Using the results of scientific research for practical applications.
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What is a Telegraph?
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A device for sending messages by code signals produced by closing and opening an electric circuit.
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Electromagnet?
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A coil or wire usually wound around a core of iron or steel which produces a magnetic field when electricity flows through the wire.
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