concepts
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20 terms
Terms | Definitions |
|---|---|
 All matter is made up of | Atoms |
| Atoms are made up of | Protons, electrons, and neutrons |
| like or same | repel |
| oppisites | attract |
| to make a complete circuit you need | D-cell, a bulb or motor, and wires |
| in a circuit | a switch opens and closes making the path complete or incomplete |
| you can tell if the material is a conductor or insulator by | using to try and make a complete circuit |
| connductors are | metal |
| In a series circuit te components have to | share all of the electricity |
| if you are using two batteries in a series circuit they both have to be | facing the same way |
| you can make a magnet that turns on and off by | wrapping insulated wire around a steel rivet and connecting it to an electric circuit |
| To make a strong electromagnet you need to | Wrap the wire tightly between the head of the rivet and the first washer |
| The more winds of the wire on the electromagnet | the stronger the magnetism |
| tighter coils produce | a stronger electromagnet |
| all coils need to be wound in | the same direction |
| Thicker wire makes | a stronger electromagnet |
| a telegraph is an | electric communication device |
| the clicks produced by the telegraph can be made into | a code to send messages |
| a code is a | symbolic system used for information |
| Two connect two telegraphs for two way communication you have to | make two complete circuits |
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