Question | Answer |
resistor | material that resists but does not stop the flow of electric current |
charge | meaurement of an objects extra positive or negative particles |
static electricity | the charge that stays on the object |
electric field | space around an object where electric forces occur |
electric current | flow of electric charges |
circuit | path made for an electric current |
electric cell | supplies energy to move charges through a circuit |
conductor | material that an electric current can pass through easily |
insulator | material that an electric current cannot pass through easily |
series circuit | circuit with one path |
parallel cicuit | circuit with more than one path |
magnet | object that attracts things made of iron or steel |
magnetic poles | ends of a magnet |
magnetic field | space around a magnet where the force of the magnet acts |
electromagnet | arrangement of wire wrapped around a core |
What kind of charge would an object have if it has more positive charges that negative? | positive |
what kind of charge would an object have if it has more negative charges than positive charges? | negative |
What kind of charge would an object have if it has the same amount of positive and negative charges? | neutral |
When two objects both have positive charges they will ____ each other | repel |
Copper, iron, or steel in a circuit will _____ electricity | conduct |
Wher is a bar magnet's strongest pull? | the poles |
magnets will attract if the poles are _____ | opposites |
Electromagnets in motors are used to cause ___ | motion |
Name three ways to control an electromagnet | 1. add coils 2. turn off or on 3. increase or decrease amount of current |
How does a compass work? | the magnet in the compass is attracted to Earth's magnetic force |
Name three ways that electricity and magnetism alike | 1. They both have forces 2. They both have opposite states 3. the states attract or repel each other |