Magnetism
Where is the strongest part of the magnet?
The Poles
If I have two charged objects that are opposite charges (a positive and negative) what will happen?
They will ATTRACT
Gravitational forces are always ....
Attractive!
What force does an electric current produce?
Magnetism
Name the 3 types of heat transfer
Conduction, Radiation, Convection
Magnetic poles that are alike will do what?
REPEL
What is static electricity?
Static electricity is the imbalance of electrons
How can you increase gravity?
Increase Mass
What is the middle part of the electromagnetic called, with the coils?
SOLENOID
What is "stored" energy called?
Potential
If you have iron filings showing a magnetic field, and then you remove the iron filings - does the field still exist?
Yes. The field still exists. The magnetic field is invisible and the iron filings help us see that it is there.
What is current electricity?
Current electricity is electricity that flows in a continuous circuit
If you were to go to the moon, which has less mass than Earth, what happens to the gravitational pull there?
It decreases - thus why we would jump 12 feet
What three things do you need to make an electromagnet?
Battery (energy source), copper wire, iron nail (solenoid)
If you increase the mass of something, what happens to its speed?
It increases
What is electricity?
The flow of electrons
What happens to your mass on the moon?
Mass stays the same!
How can you increase the magnitude of an electromagnet?
increase # of wraps, increase voltage (power source), increase size of iron core
What are the 3 states of matter?
Solid, Liquid, Gas
If two opposite poles are far away from each other, what happens to their PE?
It increases
How can I increase the magnitude of two charged particles?
Decrease the distance - bring them close together
The force of attraction between two objects with mass
In Japan they use "Mag-lev" Trains that can travel up to speeds of 500 mph - what force powers these trains?
Electromagnetism!!
Name the phase change when a gas becomes a liquid
CONDENSATION