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electricitymagnetism
book skeep
| Question | Answer |
|---|---|
| what is the symbol for a cell | a long thin line next a short thick line. |
| what is the symbol for a bulb | a circle with an x inside |
| what is the symbol for a switch | two small circles with a diagonal line in between - if the line is touching both of the circles, that means that the switch is closed. if the line is not touching both of the circles, tat means that the switch is open. |
| what happens if the switch is open | the switch connects the two sides of a circuit, so if the switch is open, the switch will not work. |
| what is a connecting wire | the wire that connects the components of a circuit. |
| if a circuit contains one cell and three bulbs, will it be dim or bright? | dim - the power from the cell is being shared between three bulbs, and there is only a limited amount of power in the cell, so there will be less light going from the bulbs. |
| what happens if one bulb in the circuit 'blows'? | all of the other bulbs will turn off/go out. |
| :) | :) |
| what is current? | the flow of electricity |
| how many loops does a parallel circuit have? | more than one |
| what in an ammeter used for? | the current in a circuit |
| what is current | the flow of electricity/flow of electrons |
| what are sone magnetic metals? | iron cobalt nickel (steel) |
| magnet | any material that attracts iron and material that contains iron |
| magnetism | force of attraction or repulsion |
| magnetic pole | all magnets have two ends called magnetic poles |
| alike poles | repel |
| unalike poles | attract |
| magnetic field | the area of magnetic force around an object - the reason magnets attract without even touching |
| What happens when you break a magnet | each piece will have its own north and South Pole |
| Where is the magnetic North Pole | Northern Canada |
| why does a compass act as it does? | electromagnetism |
| what kind of energy is associated with electric circuits? | electric energy |
| electric force | attraction or repulsion between electric charges |
| static electricity | buildup of charges on an object, they do not flow continuously |
| friction | transfer of electrons from one uncharged object to another by rubbing |
| Conduction | transfer of electrons from a charged object to another by direct contact |
| electric current | continuous flow of electricity through a circuit |
| Where is a magnetism strongest on a magnet? | at its poles |
| electric circuit | complete, unbroken path through which electric charges can flow |
| conductor | material that electric charges can flow easily through, used to carry electric charge |
| insulator | material that electric charges cannot flow easily through, used to stop flow of charges |
| resistance | measure of how difficult it is for charges to flow through material |
| ampere | unit for current |
| volt | unit for voltage |
| ohm | unit for resistance |
| series circuit | all parts of the circuit are connected one after another on a path, only one path for the current to take |
| parallel circuit | different parts of the circuit are on separate branches, there are several paths for current to take |
| features of a circuit | device to run on circuit (light bulb), source of electrical energy (battery), and conducting wires |
| How can you make an electromagnet stronger | increasing the number of coils or voltage |
Created by:
Frankiek
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