# What is a magnet? A magnet is a material or device that attracts items containing iron, nickel, and cobalt. A magnet is a material or device that attracts.

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What is a magnet? A magnet is a material or device that attracts items containing iron, nickel, and cobalt. A magnet is a material or device that attracts items containing iron, nickel, and cobalt.

What is a pole? A magnetic pole is the end of a magnet. A magnetic pole is the end of a magnet. A magnet is strongest at the poles. A magnet is strongest at the poles. Like poles of magnets repel (push apart) Like poles of magnets repel (push apart) Unlike poles of magnets attract (come together) Unlike poles of magnets attract (come together)

How can you make a magnet? Rub a steel object with a magnet. Be sure to rub in the same direction. This makes the atoms “line-up”. Rub a steel object with a magnet. Be sure to rub in the same direction. This makes the atoms “line-up”.

What is a magnetic field? A magnetic field is the area around a magnet that has a pulling force. A magnetic field is the area around a magnet that has a pulling force. A magnetic field can be seen by sprinkling iron filings around a magnet. The patterns that you see are called Magnetic Lines of Force. A magnetic field can be seen by sprinkling iron filings around a magnet. The patterns that you see are called Magnetic Lines of Force.

What is Static Electricity? Static electricity is the build-up of charged particles on an object Static electricity is the build-up of charged particles on an object A discharge occurs when electrons “jump” from one object to another A discharge occurs when electrons “jump” from one object to another Lightning, laundry, “bad hair”, carpet shock Lightning, laundry, “bad hair”, carpet shock

What is Current Electricity? Current electricity is the flow of electrons through a circuit. Current electricity is the flow of electrons through a circuit. Current flows = river flow Current flows = river flow

What is a Circuit? A circuit is the PATH in which electrons flow A circuit is the PATH in which electrons flow

What is a conductor? A conductor is any material in which electricity (or heat) can pass through easily. Most metals - copper

What is an insulator? An insulator is any material in which electricity (and heat) does NOT pass through easily. Example rubber, plastic, wood, air

What is a switch? A switch is a device that easily opens and closes a circuit. A switch is a device that easily opens and closes a circuit.

What is a series circuit? In a series circuit, the electricity can only travel in ONE path In a series circuit, the electricity can only travel in ONE path Disadvantages: Disadvantages: 1. If one bulb goes out, the other goes out too. 1. If one bulb goes out, the other goes out too. 2. They “share” the electricity, so the bulbs will be only ½ as bright. 2. They “share” the electricity, so the bulbs will be only ½ as bright.

What is a parallel circuit? In a parallel circuit, each device will have its own separate circuit. In a parallel circuit, each device will have its own separate circuit. Advantages: Advantages: If one bulb goes out, the other will stay lit. If one bulb goes out, the other will stay lit. The bulbs will not get dimmer as you add more bulbs The bulbs will not get dimmer as you add more bulbs

What is a fuse? A fuse is a device that opens a circuit by melting or breaking when the circuit is overloaded. A fuse is a device that opens a circuit by melting or breaking when the circuit is overloaded. It is disposable. Throw it away when it “blows”. It is disposable. Throw it away when it “blows”. They are cheap. They are cheap.

What is a Circuit Breaker? A circuit breaker is a switch that automatically opens a circuit when a circuit gets too hot. A circuit breaker is a switch that automatically opens a circuit when a circuit gets too hot.

What is a filament? A filament is a thin wire inside a light bulb that glows when electricity passes through it. A filament is a thin wire inside a light bulb that glows when electricity passes through it.

What are two different kinds of light bulbs? Incandescent – old fashioned bulbs- hot – lot of electricity – cheap – has filament Incandescent – old fashioned bulbs- hot – lot of electricity – cheap – has filament Fluorescent- filled with a gas that glows when electrified – more expensive – last longer – pollution problem Fluorescent- filled with a gas that glows when electrified – more expensive – last longer – pollution problem

What is an Electromagnet? An electromagnet is a magnet created by current electricity flowing through a coil of wire. An electromagnet is a magnet created by current electricity flowing through a coil of wire.

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