negative charges in an atom are called ___________. electrons
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Negative charges in an atom are called ___________.electrons
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What kind of electricity can be caused by rubbing two materials together?
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When you rub a balloon with a cloth, __________ charges are knocked off the cloth and are collected onto the balloon. This makes the balloon have a __________ charge.
negative
negative
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What is a discharge of static electricity in the atmosphere called?
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Lightning occurs when the ___________ charges in the thundercloud build up and jump to the ____________ charged ground.
negative
positively
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What kind of electricity is caused by a continuous flow of electrons?
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What is the path that electricity flows through called?
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A circuit must be _________ to allow the flow of electricity.
closed
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What can be used to control the flow of electricity?
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What do we call materials that allow the flow of electricity?
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What do we call materials that do not allow the flow of electricity?
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What is a poor conductor called?
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Resistors allow electrical energy to be ___________ into other forms of energy.
changed
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Name three types of energy that electricity can be changed into.
Heat, light, and mechanical energy
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How many pathways does a series circuit have?
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How many pathways does a parallel circuit have?
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What kind of circuit is it?
parallel
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What kind of circuit is it?
series
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What is the area of magnetic force called?
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Electric current creates a _____________ field.magnetic
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What do you make if you put together a closed circuit and wrap the wire around an iron bolt?
Electromagnet
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How can you make an electromagnet stronger?
You can wrap the wire around the iron bolt more times.