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WorksheetsNatural Science unit 5: ELECTRICITY AND MAGNETISM
Total questions: 22
Worksheet time: 7mins
When you turn a switch on...
It connects two wires so that electricity can flow through them
The electrical circuit opens and the light turns on
The electrical circuit closes and the light turns off
Magnets exert a visible force.
A compass is a tool that can detect the Earth´s magnetic field.
An electric current is...
the flow of electric charge through an atom.
the flow of electric charge through a conductor.
Electrons have a negative charge and protons have a positive charge.
The atom´s nucleus is made of...
electrons and neutrons.
protons and electrons.
neutrons and protons.
Neutrons don´t have a charge. They are neutral.
Electricity is...
The movement of neutrons from one atom to another.
The movement of electrons from one atom to another.
The movement of protons from one atom to another.
The movement of atoms form one electron to another.
In electric current, the charge of an atom is __________ when there are the same number of protons and electrons.
positive
balanced
negative
Charges that are the same repel each other but opposite charges attract.
Electrons only flow out of the battery when they are joined by a conductor.
Like electricity, magnetism is created by electrons.
A bar magnet is...
A non permanent magnet that can be switched on and off. It has two poles: north and south.
A permanent magnet that can´t be switched on and off. It has two poles: north and south.
A permanent magnet that can be switched on and off. It has one pole: north or south.
In a bar magnet, the north pole is negatively charged and the south is positively charged.
This is a magnetic field.
The Earth's magnetic field is...
Solar radiation.
Liquid iron.
The magnetosphere.
What causes the magnetosphere?
The electric current.
The solar radiation.
As the Earth rotates the iron liquid in the centre moves slowly causing it.
The magnetosphere is essential to life because...
It reflects solar radiation into the Earth.
Solar radiation gets in the Earth.
It deflects magnetism.
It deflects solar radiation from the sun back out into space.
A Maglev has magnets in the base of the train.
Who discovered the electron and called it the "electrodynamic molecule"
Hans Christian Oersted.
André-Marie Ampere.
Michael Faraday.
In speakers and microphones...
the cone vibrates rapidly, producing sound waves.
the magnetic field produces sound waves.
the current produces sound waves.
In an electric bell...
the current doesn´t produce a magnetic field in the electromagnet.
the current produces a magnetic field in the electromagnet.
the hammer produces a magnetic field in the electromagnet.
the switch produces a magnetic field in the electromagnet.
