Electricity
Name the 3 particles of an atom.
Protons, Neutrons, Electrons
Two magnets with south poles facing each other will?
Repel
Static electricity is an excess build up of __________.
Electrons
What are 3 main objects that make up an electromagnet?
Coil of wire
Battery
Iron core (nail)
(Alligator clips were in our setup but are not necessary)
What happens (on a particle level) when two materials are charged by rubbing against each other?
One loses electrons
A particle that carries a negative electric charge is called a(n) ______.
Electron
How can you increase the magnetic field between two bar magnets?
Move them closer together.
T/F: Lightning is a form of static electricity.
True
What is the role of the battery in the electromagnet?
It provides the power source for the electromagnet.
Electric currents produce _____________.
Magnetic fields
An object that has lost electrons is.... (what charge?)
Positive
What is created when you wrap a coil of wire around an iron core and attach it to a battery?
Magnetic Field
In a static discharge, which particles move from one object to another?
Electrons
Name one way the strength of an electromagnet be increased.
Increase the current/amount of electricity.
More loops around the iron core.
What the core is made of.
The strongest part of a magnet is...?
The poles
A region around a charged particle that can exert a force on another charged particle is called an?
Electric Field
What do the lines shown with iron filings around a magnet represent?
The magnetic field
What types of charges attract?
Positive and Negative
What would happen if you took one end of the wire off the battery?
The nail would no longer be a magnet
In a generator/electric motor how is the electricity created?
Turning a coil through the magnetic field.
Electric charges always flow from _____ areas to _____ areas.
Negative, Positive
Describe what a magnetic field would look like if the two poles facing each other were North poles.
The lines of the magnetic field should be curving away.
If you rub a balloon on your head and remove it, your hair stands up straight. Why does this occur?
Because the hairs have the same charge and repel each other.
What are two advantages of using an electromagnet?
You can Increase of decrease the strength or the magnet.
You can turn them on and off.
How can a wire become magnetic?
Run a current through it