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Mrs.D Electricity
Electricity and Magnetism
| Question | Answer |
|---|---|
| Two types of charges objects can have are ________________ and ____________. | positive,negative |
| One way a negative charge can move from one object to another is by _________________ | rubbing |
| Most objects have a balance of _______________ and ____________ charges | positive, negative |
| If a person with more negative charges touches someone with balanced charges they may feel a _____________. | shock |
| If there is the same amount of negative and positive charges then the charges are _________________. | balanced |
| When two objects have different charges they ______________. (pull together OR push apart) | pull together |
| When two objects have the same charges they ______________. (pull together OR push apart) | push apart |
| Like charges ____________. (pull together OR push apart) | push apart |
| Different charges _____________ (pull together OR push apart) | pull together |
| To repel means to ______________. (pull together OR push apart) | push apart |
| To attract means to _______________. (pull together OR push apart) | push together |
| Two balloons will attract each other if their charges are the ____________. (the same OR different) | different |
| Two balloons will repel each other if their charges are the ____________. (the same OR different) | same |
| If one balloon had a negative charge and the other balloon had a positive charge the balloons would _______________ each other. (repel of attract) | attract |
| If both balloons had negative charges the balloons would _______________ each other. (repel of attract) | repel |
| If both balloons had positive charges the balloons would _______________ each other. (repel of attract) | repel |
| Electrical current is the flow of ______________ charges through matter. | negative |
| A material through which electrical current passes easily is called a ____________________. (insulator OR conductor) | conductor |
| A material through which electrical current doesn't pass through easily is called a ____________________. (insulator OR conductor) | insulator |
| An example of a good conductor is _________________. (copper metal OR plastic) | copper metal |
| An example of a good insulator is _________________. (copper metal OR plastic) | plastic |
| Wires are covered with rubber because rubber is a good ________________________. (insulator OR conductor) (insulator or conductor) | insulator |
| A measure of how much a material opposes the flow of electrical current and changes current into heat energy is called __________________________. | resistance |
| A circuit that connects several objects in a single path is a ___________________ circuit (parallel or series) | series |
| The current for each appliance has its own path is a ______________ circuit (parallel or series) | parallel |
| An electric current passes easily through a wire that is a ____________ (insulator OR conductor) | conductor |
| A material's ___________ measures how much the material opposes the flow of electric current. | resistance |
| An object that attracts iron and steel is a ________________ | magnet |
| An electric current does not pass easily through an _______________. (insulator OR conductor) | insulator |
| The force around a magnet is _________________ | magnetism |
| When electric current runs through a loop of wire, it makes an ________________ | electromagnet |
| A small magnet that can turn freely is a _______________. (compass or electromagnet) | compass |
| A machine that uses an energy source and a magnet to make electricity is a ________________. (generator or electromagnet) | generator |
| The space around a magnet where magnetism acts is the ________________ | magnetic field |
| Magnetism is strongest at the _______ of the magnet. | poles |
| If you pass electricity through a coiled wire, the wire becomes ___________________. | magnetic |
| A circuit that only contains one path is called a ______________ circuit. (series or parallel) | series |
| In a series circuit, if one light bulb is missing then the circuit will __________________ work. (continue to work OR no longer) | no longer |
| In a parallel circuit if one light bulb is missing then the circuit will __________________ work. (continue to OR no longer) | continue to |
| Before plugging it in, Jessie's Dad noticed that one of the light bulbs on the Christmas tree was missing. When he plugged it in the tree wouldn't light because the tree's lights were a ______________ circuit. (series or parallel) | series |
| Before plugging it in, Jessie's Dad noticed that one of the light bulbs on the Christmas tree was missing. When he plugged it in the tree still lit because the tree's lights were a ______________ circuit. (series or parallel) | parallel |
| In a series circuit each bulb has ______________________ path. (its own OR only one ) | only one |
| In a parallel circuit each bulb has ______________________ path. (its own OR only one) | its own |
| You should never touch electric plugs when your hands are ______________. (dry OR wet) | wet |
| Magnetism is the pulling or pushing force that exists around a ___________________. | magnet |
| The two ends of the magnet are called the _______________. | poles |
| The part of the magnet that is the strongest is the _______________. (poles OR middle) | poles |
| With magnets, if you put the north pole next to another magnet's north pole the magnets would ______________ (attract OR repel) | repel |
| With magnets, if you put the south pole next to another magnet's north pole the magnets would ______________ (attract OR repel) | attract |
| The poles of a magnet will attract one another if the poles are ________________. (alike or different) | different |
| The poles of a magnet will repel one another if the poles are ________________. (alike or different) | alike |
| Most electric power is made by large machines called __________________. | generators |
| In a compass the needle always points to Earth's ___________ pole. | north |
| True or False: The Earth is a giant magnet. | True |
| True or False: If you remove one bulb from a series circuit then all the bulbs will go out. | True |
| True or False: If you remove one bulb from a parallel circuit then all the bulbs will go out. | False |
| A temporary magnet can be made by wrapping a __________around an object and connecting it to a battery | wire |
| True or False: An electromagnet will continue to work even after you remove the wire form the battery. | False |
| True or False: You can find electromagnets all over your house. | True |
| True or False: A fan in your house may contain a electromagnet. | True |
| One example of an object that uses electromagnets is _______________. | doorbell |
| One example of an object that uses electromagnets is _______________. | phone |
| True or False: You can make an electromagnet stronger by wrapping the wire around the object less times. | False |
| To make an electromagnet stronger you can _____________________. | wrap the wire around the object more times. |
| If you increase the amount of coils around an electromagnet it strength will ________________. (increase OR decrease) | increase |
| True or False: Electromagnets can be turned on and off. | True |
| If you saw a bunch of balloons ties together but non of them were touching you might think that all the balloons have _____________ charges. (different or the same) | different |
| The poles of a magnet are where its magnetic field is the ____________. (strongest OR weakest) | strongest |
| The middle of a magnet is where its magnetic field is the ____________. (strongest OR weakest) | weakest |
Created by:
sderinger
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