Magnetism I
When two magnets push away from one another; happens when two north or two south poles meet.
What is repelling?
When two magnets draw toward one another; happens when a north and south pole meet.
What is attraction?
A buildup of electric charge on an object or surface.
The loop (path) along which an electric current travels.
What is an electric circuit?
A temporary magnet that works only when electricity runs through it.
What is an electromagnet?
An invisible area where magnetic forces are present.
What is a magnetic field?
A place on a magnet where its pulling force is the strongest.
What is a magnetic pole?
An electric circuit with no breaks.
What is a closed circuit?
An electric circuit with a break in it.
What is an open circuit?
The continuous flow of electrons along a path.
What is an electric current?
These are the parts of an atom.
What are electrons, neutrons and protons?
Magnets that hold their force for a short time after being taken away from a magnetic field.
What are temporary magnets?
Materials that allow electric current to flow through easily.
What are conductors?
The sudden jump of a spark between two objects.
What is an electrical discharge or static electricity?
He invented the incandescent lightbulb.
Who was Thomas Edison?
Two metals that are attracted to magnets.
What are iron and nickel?
This is how the atoms are arranged in a magnetized object.
What is they are are aligned? (lined up facing the same way)
This force makes a compass to work.
What is the Earth's magnetic field? (north and south poles)
Materials that do not carry electric current easily.
What are insulators?
This allows magnets to move objects without touching them.
What is a magnetic field?
The result of particles from the Sun interacting with Earth's magnetic field.
What are the Northern Lights (Aurora Borealis)?
A natural permanent magnet made of magnetite.
What is lodestone?
The two locations on a battery that must have a path to one another to create an electric circuit.
What are the positive and negative terminals?
These components (parts) are needed to make an electromagnet.
What are conductors (wires), an electrical power source (battery), and an iron/steel rod or block.
Power generated by water turbines.
What is hydroelectric power?