Static Electricity
An excess of positive or negative charge in an object
Static Electricity
A material through which an electric charge can move easily.
Conductor
A thin-coiled resistor that transforms electrical energy into light energy and heat.
Space around a magnet in which magnetic forces operate.
Magnetic Field
generator
A property of matter that can be described as positive or negative.
Electric Charge
A material through which an electric charge moves slowly.
Insulator
A force that acts when two surfaces rub together.
Friction
A force that acts on moving electric charges and magnetic materials
Magnetism
Electrical energy is released when
charged particles move
The push or pull between two charged objects.
Electric force
An electric charge in motion
Electric current
An object that uses the energy in a circuit.
Resistor
The ends of a magnet are called
magnetic poles
True or false an electromagnet can be turned on and off
True
What happens to the particles in a balloon when you rub the balloon against your hair?
The balloon picks up negative particles from your hair and becomes negatively charged.
Electric current cannot flow in a series circuit if
there is a break in the ciruit
One example of a resistor is
a Filament
A device that uses electromagnets to change electrical energy into mechanical energy
motor
Which of these materials is a conductor?
Rubber, chalk, gold, glass
Gold
Is lighting likely to strike a short metal fence than a tall tree in the same area?
No. Lightning usually strikes the tallest object in an area because static electricity takes the shortest path.
What are the two types of circuits?
Parallel and series
Who invented the light bulb?
Thomas Edison
a magnet that only works when electricity is provided
electromagnet
Why does a compass needle point in a north-south direction?
The needle reacts to the Earth's magnetic poles