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WorksheetsAtom, electric charge and current
Total questions: 17
Worksheet time: 14mins
All matter is made up of...
Neutrons
Protons
Atoms
Copper
Electrons are _____________ charged
negative
positive
neutral
Protons move around the nucleus
True
False
What' s an ion?
It' s a charged atom
It' s a kind of cation
It' s a kind of anion
It' s an atom with positive or negative charge
A cation is
A kind of ion with most neutrons than protons (neutral ion)
A kind of ion with most electrons than protons (negative ion)
A kind of ion with most protons than electrons (positive ion)
What' s an electric shock?
It' s a phenomena that occurs when a person comes into contact with an electrical energy source. Electrical energy flows through a portion of the body causing a shock.
It' s a phenomena that happens when you are going to create electric current. It' s the first step of it.
It' s an emergency signal for warning us about some electric current is near us.
How do like charges behave (positive-positive or negative-negative)?
They attract
They repel
They remain
Two atoms with neutral charge will ____________
Attract
Repel
Remain
Electric current is...
... A conductor negatively charged
... A group of protons in motion going through a conductor
... A group of electrons in motion going through a conductor
... A group of neutrons in motion going through a conductor
Opposite charges...
Repel
Attract
Stay
In general, matter is neutral -it doesn' t have an electric charge-. It means that the number of electrons (-) is the same than the number of protons (+).
False. Matter in general is positively charged.
True. Sometimes, however, there' s a movement of electrons from one material to another.
Conductors are materials that allow electric current to pass through them. A good example are metals
True. Specially silver or copper
False. A good example is glass
Insulators are materials that do not allow electric current to pass through them. Like...
Plastics, wood, ceramics
Plastics, silver, wood
Ceramics, metals, plastics
Metals, glass, plastics
To produce electric current there must be _________________ of electrons between the two points of a conductor.
Balance
Imbalance
The movement of electrons stop when the charge is balanced.
False
True
Which material do we usually use for making electric cables?
Metal is used for the inner part while plastic is commonly used for the outer one
Plastic is used for the inner part while metal is commonly used for the outer one
Plastic is used for both the inner and the outer part
Why light switches are commonly made up of plastic?
Because it' s a truly cheap material
To avoid getting an electric shock when using them since plastic is an insulator
