Electricity
Magnetism
Electromagnets
Tranformers + Power
Generators/Motors
100
Materials that allow electric current to flow through easily.
What are conductors?
100
When two magnets push away from one another; happens when two north or two south poles meet.
What is repelling?
100
A student has an iron nail, a metal wire, and a battery and connects them. What is the student creating?
What is an electromagnet
100
What device steps down the voltage of electricity to safely enter homes?
What is a transformer
100
_____________energy is changed to _______________energy in a generator
What is mechanical and electrical?
200
Materials that do not carry electric current easily.
What are insulators?
200
When two magnets draw toward one another; happens when a north and south pole meet.
What is attraction?
200
What happens when electricity is removed from an electromagnet?
What is it stops
200
What is the main reason one would want to increase the voltage in a power line?
What is to travel long distances
200
A simple electric __________ changes ________ energy to __________ energy.
What is motor, electrical, mechanical?
300
Electricity is the flow of these
What is electrons
300
A place on a magnet where its pulling force is the strongest.
What is a magnetic pole?
300
What could be done to increase the strength of the electromagnet shown?
What is add more coils to the nail
300
What is the main reason one would want to decrease the voltage in a power line?
What is to allow electricity to enter homes and small building safely.
300
An electric circuit must be _____________________, unbroken path through which the electricity flows.
What is complete?
400
This is a continuous flow of electrons
What is electric current
400
Two metals that are attracted to magnets.
What are iron and nickel?
400
What is the primary benefit of electromagnets as opposed to other magnets?
What is it can be turned on/off
400
What is the purpose of the cylindrical object in the picture?
To increase or decrease voltage in a power line with little loss of energy
400
The center of a motor becomes a temporary electromagnet when ________.
A voltage source is applied (battery or electrical current)
500
Electric charges that are different do this...
Electric charges that are the same do this...
What is attract?
What is repel?
500
What will increase the strength of an electromagnet?
Increase: number of coils of wire or number of batteries attached
500
What is created by the flow of electric current?
What is a magnetic field
500
Which part will step up the voltage to allow long-distance transmissions?
What is 2
500
How does a generator produce electricity?
Induction from a spinning copper coil located between two magnets produces a flow of electrons