1. Magnetic Field
Grade 8

2. The magnetic field is all the space around a magnet where the magnetic forces act

3. Put the north poles of two bar magnets together. What happens?
Magnetic Fields - Experiments
Put the north poles of two bar magnets together. What happens?
Now put the two magnets under a piece of paper with the N poles together.
Carefully scatter iron filings on the paper.
Draw what you see.

4. Magnetic field pattern with N poles together
Notice the pattern of lines of
force in this region.

5. Carefully scatter iron filings on the paper.
Magnetic Fields - Experiments
Put the north and south poles of two bar magnets together. What happens?
Now put the two magnets under a piece of paper with N and S poles together.
Carefully scatter iron filings on the paper.

6. Magnetic field pattern with N and S poles together
Notice the pattern of lines of force in this region.
How are they different from before?

7. Beyond the magnetic field, the magnetic forces does not act.
Any object outside the magnetic field will not be attracted. The paper clip will not be attracted

8. The magnetic field is:
Is strongest at the poles.
Has lines of force.
The lines of force will never cross each other. They are parallel.

9. The magnetic field of a U-shaped magnet

10. The magnetic field of a 2 attracting magnets
The magnetic field of a 2 attracting magnets Magnetic field of two repelling magnets