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ELECTRICITY & MAGNETISM by Mr. Reece ANSWER THE FOLLOWING “FILL IN THE BLANK” An unbroken path through which negative charges can flow is a ____________. circuit ANSWER THE FOLLOWING… A resistorreduces the amount of _________ electricity that flow through a material. ANSWER THE FOLLOWING… A material that does not allow electricity to flow throughan it is______________. insulator ANSWER THE FOLLOWING… A material that allows electricity to flow through it easily is a conductor _______________. ANSWER THE FOLLOWING… A magnetic field is caused when __________ flows through a circuit. a current ANSWER THE FOLLOWING… Objects that have the same number of positive and negative charges are neutral ____________. ANSWER THE FOLLOWING… An object with nine – charges and three + charges is negatively _____________________. charged TRUE & FALSE True ________ Every circuit has an unbroken path and a power source. TRUE & FALSE True ________ A parallel circuit has more than one path. TRUE & FALSE True ________ The continuous flow of negative charges through a material is called current electricity. TRUE & FALSE False Static electricity is more ________ useful than current electricity. TRUE & FALSE True ________ Magnetism and electricity are related. TRUE & FALSE True ________ Magnets have a north pole and south pole. TRUE & FALSE False Objects that have the ________ same kind of charge attract each other. TRUE & FALSE True ________ Electric power plants use water, steam, and wind to make generators work. TRUE & FALSE True ________ A magnet's magnetism is strongest at the magnet’s poles. TERMS TO KNOW magnet ____________ poles ____________ - an object that attracts iron. - the ends of a magnet. magnetic field - the area around a __________________ magnet where the force of a magnet can act. magnetis - the pushing or pulling force caused by a magnet. m ____________ TERMS TO KNOW generator - produces electricity by using ____________ a coil of wire and a magnet. electromagnet - a temporary magnet __________________ formed when electric current flows through a wire coiled around a metal core. COMPLETE Name on way magnets can be used to produce electricity. By moving a magnet through a coil of wire By moving a coil of wire through a magnetic field Name one thing that uses an electromagnet. Fire alarms, telephones, CD players, computers, doorbells, cranes, maglev trains