Created by That Yeti Dog Person
about 4 years ago
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Question | Answer |
_____ is a natural force produced by the movement of electrons. | Electricity |
The most common natural source of electricity is _____. | lightning |
The first truly successful application of electricity was made in 1837 with the _____. | telegraph |
The _____ was invented by Alexander Graham Bell and was patented in 1876. | telephone |
The _______ was invented by Thomas Edison in 1878. | incandescent light |
A _____ is defined as a complete electrical path. | circuit |
A typical circuit includes these four components: ____, ____, ____, and a ____. | power source, conductors, load, switch |
The _____ in a circuit are the wires that carry the electricity. | conductors |
In a circuit, the ____ is a device, such as a light or appliance, that we want to run with electricity. | load |
In a circuit, the ____ is the device we use to turn the electricity flow on and off. | switch |
When the switch is turned off in a circuit, the path of the circuit is broken. This is called an ______. | open circuit |
When the switch is turned on in a circuit, it completes the circuit. This is called a ______. | closed circuit |
_____ are tiny atomic particles that have a negative electrical charge, | Electrons |
The end of a battery that's marked with a negative sign (-) is called the ______. | negative terminal |
The end of a battery that's marked with a positive sign (+) is called the ______. | positive terminal |
The negative terminal of a battery has _____ electrons and the positive terminal has _____ electrons. | too many, too few |
The flow of electrons through a circuit is called ______. | electric current |
All matter in the universe is formed from 100 or so different substances called _____. | elements |
The _____ is the smallest particle of a element. | atom |
All atoms are made up of atomic particles called ____, ____, and ____. | protons, neutrons, electrons |
_____ are the smallest type of atomic particle. | Electrons |
_____ are heavier than electrons and have a positive charge. | Protons |
_____ have no electrical charge at all. (they are neutral) | Neutrons |
A _____ atom is the simplest of atoms. It has 1 electron and 1 proton. | hydrogen |
The center of an atom is called the _____. | nucleus |
The copper atom contains ___ electrons and ___ protons. | 29, 29 |
Electrons orbit the nucleus of an atom in many layers called _____. | shells |
_______ orbit the nucleus in the outermost electron shell and are easily dislodged from their orbit. (copper atoms are a good ex.) | Free electrons |
A common way to remove electrons from their orbit is _____ (rubbing). | friction |
Any substance in which electrons can move freely is a _____. | conductor |
George Ohm was the first to discover the existence of ____, ____, and ____. | conductors, insulators, resistors |
Two of the best known conductors of electricity are ____ and ____. | copper, silver |
_____ means how well a material carries electricity. | Conductivity |
_____ is commonly use in resistors because its atom has 4 electrons in its outermost shell. | Carbon |
The ohm measurement was named after _______. | George Ohm |
_____ is a better conductor than copper because its atom's free electron is one more shell farther away from its nucleus than copper's. | Silver |
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