1
2
3
4
5
100
Where is the force of attraction strongest on a magnet
At the poles
100
Electrons are transferred whenever there is ___________ between materials that differ in their ability to give up or accept electrons.
Friction
100
Glass is a good conductor of electricity.
No
100
A buildup of electric charges on objects.
static electricity
100
The same magnetic poles do what?
Attract
200
This picture shows...
Repulsion (repel)
200
Electric charges that are alike do this...
Repel
200
Electric charges that are different do this...
Attract
200
When an object has too many electrons it has a ______________ charge
Negative
200
Electric current that keeps reversing the direction in which the current flows.
alternating current
300
A nail wrapped in copper attached to a battery
Electromagnet
300
The current that flows in one direction.
Direct Current
300
True or False: If you get a shock when you touch a metal doorknob, an electrical field has occurred.
False
300
If a magnet is broken in half, what poles would each piece have.
North and South
300
If you rub a balloon on your hair _______________ move from your hair to the balloon.
Electrons
400
Three ways that you can increase the strength of an electric field is...
Increase the turns in a wire
Add more current flowing through the wire
Use a larger metal object/ an object that will have more magnetic force (iron, cobalt or nickel make better temporary magnets than alloys)
400
Tesla invented this type of current
Alternating Current
400
When two magnets repel they...
Push apart
400
When two magnets attract, they...
Pull together
400
Static electricity is caused by an imbalance of ____________ and ______________ charges.
Positive/Negative
500
If you rubbed two balloons on your hair what will happen if you put them close together?
They will push (repel) away from each other.
500
Walking across a carpet you get electrons all over your body by conduction, friction or induction.
friction
500
What do you call the process of charging a conductor by bringing it near another charged object without touching it?
Induction
500
Touching your finger to a doorknob (without touching) and getting shocked is called
induction or polarization
500
The area around a magnet is known as the ____________ ______________.
Magnetic Field