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4th grade Magnetism and Electricity
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magnet
an object that sticks to iron
magnetism
a specific kind of force
attract
when magnets pull together
repel
when magents push apart
circuit
the pathway for the flow of electricity
electrical current
a continuous source of electricity
atom
smallest particle in matter
nucleus
the positive part of an atom
electron
the negative part of an atom
electricity
when electrons flow between atoms
