This is my presentation about electricity. By:Cassidee M. What is - - PowerPoint PPT Presentation

This is my presentation about electricity. By:Cassidee M.

What is electricity?

Electricity is the movement of electrons.

There are different kinds of electricity. One of them is static electricity. Static electricity is when electrons jump from one object to another.Static electricity can make your hair stick up, shock you, etc.

What is a electric current?

A electric current is a stream of negative charges.

These are the steps that describe the movement of electric charges in a closed circuit. 1.charges leave the negative side of the dry cell. 2.charges move through the switch. 3.charges move from the switch to the light bulb.

4.charges move through the light bulb. 5.charges move through the wire leading back to the positive side of the dry cell.

What will happen to a buzzer connected to an open circuit?

A buzzer connected to an open circuit will not work because the electrons will not move around the circuit.

The buzzer is not working because the circuit is open.

A series circuit is a circuit where all of the parts are connected in 1 loop.

What is a series circuit?

What is a parallel circuit?

A parallel circuit is a circuit that can light up more than one bulb and has 2 loops.

What is wrong with the picture to the left?

Electric current can flow only through a circuit that is _____. A.open B.diagramed C.closed D.positive

A.is a filament B.has high resistance C.is a good conductor D.is a good insalator

Wires are often made of copper because copper_____________

MAGNETS!!!!

This are the magnet slides.

These are some facts about magnets,

• Magnets are objects that produce an area of magnetic force called a

magnetic field.

• Magnets only attract certain types of metals, other materials such as

glass, plastic and wood aren't attracted.

• Metals such as iron, nickel and cobalt are attracted to magnets.
• Most metals however are not attracted to magnets, these include

copper, silver, gold, magnesium, platinum, aluminium and more. They may however magnetize a small amount while placed in a magnetic field.

• Magnetism can attract magnetic objects or push them away.

What are north and south poles

• f magnets?
• Magnets have a magnetic north pole and a

magnetic south pole. If the same pole of two magnets are placed near each other they will push away (repel), while if different poles are placed near each other they will pull together (attract).

ELECTROMAGNETS!!!!!

• Electromagnets are created by an electric current running

through a surrounding coil. They have many uses including the generation of electricity in hydroelectric dams.

LODESTONE!!!!!!!!!!!!!

Lodestone was the first magnet. Lodestone is a piece of magnetite that has magnetic properties and attracts iron or steel or one that attracts strongly. There is a cool story u can check out on the internet about lodestone!!!

Magnet experiments!

If you attach a bar magnet to a piece of wood and float it in a bowl of water, it will slowly turn and the magnet's north pole will point towards the earth's north pole.

If you put a bar magnet under a sheet of paper and sprinkle iron powder lightly over the top, you will suddenly see the invisible magnetic field as the particles stick to it.

What is a magnet?????

A magnet is a piece of metal that attracts and pushes away other pieces of metal.

The Bullet!!!!!!!!!!!! There is a very cool train called the bullet.It runs on magnets.It actually levitates!Do u know why? It is because the magnets repel.

What force?

A student wraps a wire around an iron

• nail. The student then connects the

wire to a battery. The nail attracts another nail and they stick together. What force holds the two nails together? Magnetic force.

That was my presentation about electricity and magnets !!!