_______ are very small particles that make up allmatter in the universe.
Label the parts of an atom:
They are negatively charged particles:
They are positively charged particles:
This particles are neutral, they do not have a charge:
The positive and negative charges are the reason
why electricity exists.
Normally, an atom will have less protons than electrons,
so the atom has a negative charge.
Normally, an atom will have the same number of protonsand electrons, so altogether, the atom has a charge ofzero, it is neutral.
Normally, an atom will have more protons than electrons,so the atom has a positive charge.
What is true about atoms?
_________ can move easily and pass from one atom
When an atom does not have the same number of protons and neutrons, the atom has what we call...
an electric charge
an electric circuit
If an object has more protons than electrons, it has a...
It is the flow of electric current through a conductor.
When two objects come into contact with each other
(for example, your hair and a balloon, pen with paper...),
electrons pass from one object to another.Later they jump back to the positively charged object.We call this...
They are materials that transmit electric current easily.
They are materials which only let a specific amountof electric current pass.
They are materials that do not trasmit electric current easily.
Label the drawing:
True or false?
A generator can be a light bulb or a motor.
True or false?
When the switch is in the position ON the circuit is closed
and the electricity can pass.