Electricity
What is the accumulation of an electric charge on the surface of an object?
Static Electricity
A _____________ is something that allows an electric current to flow through it.
A conductor is something that allows an electric current to flow through it.
What are the four components of an electrical circuit?
Generator, Conductor, Switch, and Receptor
Some magnets are are made from a natural material called ___________.
Some magnets are are made from a natural material called magnetite.
Electric currents only flow between objects with ___________ charges.
Electric currents only flow between objects with different charges.
Give 2 examples of good conductors and 2 examples of insulators.
Conductors - Copper, aluminium, nickel, waters, metals
Insulators - Wood, rubber, plastic, glass
In an electrical circuit, which component transforms different types of energy into electrical energy?
The generator.
What are two uses for electromagnets?
Home appliances such as doorbells,
Transport such a high speed trains,
Cranes in recycling centres and junkyards,
Medical and scientific machines such as MRI scanners and electronic microscopes.
Electrical energy can be transformed into other types of energy. Give an example.
A light bulb - luminous energy
A vitroceramic stove - thermal energy
Why are good conductors usually covered in insulators?
To protect us from an electric shock.
To protect us from being electrocuted.
In an electrical circuit, what does the conductor do?
The conductor carries the current from the generator to the receptor.
The conductor transports and electric current around the circuit.
What is the difference between magnets and electromagnets?
Electromagnets are temporary. They stop working when we turn the electric current off.