Current Electricity
What is electricity?
Electricity is the flow of electrons from a negative point to a positive point.
How can you use a ballon to move an aluminum can without touching the can?
Rub the balloon on your hair and hold it near the can. Static electricity will move the can away from the balloon.
Give two examples of metals that are magnetic.
iron, steel, cobalt and nickel
What is an insulator?
A material that current cannot pass through easily.
What is static electricity?
An imbalance of positive and negative charges.
What two parts of a magnets attract each other?
North and south poles
What is a series circuit?
A circuit that has only one path for the current.
What is a form of static electricity found in nature?
Lightning
What happens to an electromagnet when you turn off or disconnect the electric power?
The magnetic force also turns off.
What is a circuit?
A current that moves along a wire or path in a single direction
What are the particles inside the atom that orbit the nucleus called?
Electrons
Lightning strikes occur when ____________ charges at the ground attract negative charges at the bottom of a storm cloud.
Lightning strikes occur when POSITIVE charges at the ground attract negative charges at the bottom of a storm cloud.
Who first discovered electromagnets
Michael Faraday
What type of circuit allows lights to be turned off one light but others stay lit?
A parallel cicuit
What is an electric current?
The steady flow of electricity.
Who invented the lightning rod?
Benjamin Franklin
If you hold the north pole of two magnets close to each other, what will happen?
They will repel each other.
What is a conductor?
A material that current can pass through easily.
What are three particles that are in an atom?
Protons, neutrons, and electrons.