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26 Cards in this Set

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  • Back
What is a conductor?
A substance, commonly a metal through which electricity will flow(iron, copper, steel, aluminum and water.
What is an insolator?
A substance such as plastic or rubber through which electricity will not flow. (styrofoam and glass)
What is a D-Cell?
the source of electricity
What is a battery?
refers to more than one cell
What is an electricity converter?
a component that changes into another form of energy such as heat or light.
What is a circuit?
A pathway for the flow of electricty. A closed circuit allows energy to flow while an open circuit halts the flow of electricity.
What is a complete circuit?
A complete circuit usually contains a power source (such as a battery), a wire, a switch, and some evidence of electric flow (light bulb/running motor)
What is a motor?
A component in a circuit that converts electric energy to energy
What is a nucleus?
the center of an atom which has a positive charge
What are electrons?
The tiny particles that travel around the nucleus that have a negative charge.
What is static electricity?
the seperation of positive and negative charge
What is a negative charge?
when an object has extra electrons
What is a positive charge?
when an object looses electrons
Attract
to pull toward or stick
Repel
to push or force apart
What is "current electricity?"
flows from the negative end of the cell to the positive end of the cell
Static electricity occurs when....
When you drag your feet on the floor, you pick up a negative charge because the electrons in the carpet jump onto you when you rub your shoes against the carpet.
Static electricity occurs when...
When you reach your hand out towards metal (like a doorknob) ELECTRONS in the door knob move away from you, leaving the positively charged nucleus right there. When you touch it the extra electrons you have jump onto the door knob and leave you, creating a spark of electricity.
Static electricity in class example
wool/balloon
two balloons
(opposite charges attract)
What is current electricity?
flows fromt the negative end of the cell to the positive end of the cell. The cell(or battery) is the source of electrical energy for the circuits.
What is a circuit?
A circuit is a pathway for the flow of electricity. Circuits with a switch can be opened or closed.
Open Circuilt
Parts of them are disconnected so that the electricity cannot flow through the circuit.
closed circuit
everything is connected and electricity can flow
Electricity converters can...
change electricity into another form of energy. For example, a light bulb in a circuit changes electric energy into light energy.
A motor in a circuit...
changes electric energy into motion energy
Convert
to change