magnetism in science

current in opposite Direction

Parallel wires carrying current in opposite directions create magnetic fields that repel each other.

If you visualise bar magnets creating the field lines it shows that it would be the same as two north or two south being placed together.

repel is when something backs away.

current in the same Direction 

parallel wires carrying currents in the same direction create magnetic fields that attract each other.

The wires will experience an attractive force.

Imaginary bar magnets show that this would be the same as a north pole and a south pole being placed together.

attract is when something goes somewhere.

Observing magnetic fields

Aim: To observe and draw the magnetic fields and a bar magnet.

Method:

1. place a bar magnet underneath this the page, positioned so that it lies under the diagram of the bar magnet shown below.

2. sprinkles iron filings over the bar magnet diagram.

3. observe the field lines. Note how they are more concentrated near the poles of the magnet.

4. carefully remove the magnet and pour the iron filings back into the container they came from.

5. complete the diagram of the bar magnet by drawing magnetic field lines around it. Magnetic fields travel from the north pole of a magnet to the south pole. You can indicate this by adding arrows to your magnetic field lines. Lines should also be drawn closer together around the poles as this is where the field is strongest.

I found out that the magnetic fields are shooting out.