Electromagnets
What is an electromagnet?
A magnet that can be turned off and on by electricity
What is repel?
When same charges are brought near each other
What are conductors?
Copper and Aluminum any metal
What is a magnet?
Any material that attracts iron
What is a circuit?
A path that electricity can move through
What is an example of a temporary magnet?
The type of magnet is an electromagnet
What is static electricity?
The build up of charges on an object
What are insulators?
Rubber and Ceramic Dishes (almost anything not metal)
What poles attract?
Opposite poles
What is a closed circuit?
A circuit with no gaps or breaks
What makes an electromagnet stronger?
More coils around the core, more batteries, bigger voltage
What is a negative charge?
When there are more electrons than protons
What energy is wasted energy when a light is being used?
Heat energy
Where is magnetic force the strongest?
At the North and south poles.
What is an open circuit?
A circuit with gaps or breaks
What is a magnetic field?
What a electromagnet gives off
What is static discharge?
The loss of static electricity as electric charges transfer from one object to another
What is potential energy?
Energy of position.
What is magnetite or lodestone?
A naturally occurring magnetic rock.
What battery has more voltage? A double A or triple A battery.
Trick question: both have 1.5 volts
What is a coil of Insulated Wire, Nail or screw, and a Source of Electricity used to make?
an electromagnet
What is conduction?
Electrons can be transferred from one object to another object through touching
What is Kinetic Energy?
Energy of Motion
All magnetic field lines run from where to where?
From the North pole to the South Pole.
How does a battery work?
Transforms chemical energy into electrical energy