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Review unit 7,8 and 9
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Open circuit or closed circuit
Open circuit
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What type of electricity is caused by a buildup or an excess of positive or negative charges in an object?
static electricity
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Which object has a neutral charge?
A
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T or F: Lightning is an example of static electricity
True
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What does the amount of matter in an object refer to?
mass
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What type of force does one surface exert on another when the two rub against each other?
friction
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T or F: Opposite charges attract! (-) + (+) =
True
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What is phantom energy?
Energy is consumed by appliances even when they are turned off.
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What is the difference between mass and weight?
Mass is how much matter is in an object, and weight is the gravitational pull on that object.
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What energy transformation occurs in a television?
electrical → light → sound → heat
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Which object has a neutral charge?
B
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In an open circuit the switch is
off
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Which two particles compose the nucleus of an atom?
neutrons and protons
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What causes an object's motion to change speed?
Force
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If you take one light bulb out of a parallel circuit, all the lights will go out. True or False
False
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