Magnet Fun

We got a piece of paper, some iron filings and a magnet. We put the magnet under the paper and iron filings.
Look what happened-

We found out that the iron filings stood up when the magnet was directly under the filings.
We also moved the iron filings through the plastic, a book, wood, glass.

We found out that

• Magnets are objects that produce an area of magnetic force called a magnetic field.
• Iron filings can be used to show magnetic fields created by magnets (such as in the picture to the left).
• Magnetism can attract magnetic objects or push them away.
• 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).
• The Earth's core is believed to be a mix (alloy) of iron and nickel, giving the Earth its own magnetic field.

We asked these I wonder questions. 

I wonder-

How magnets work?

What magnets can be used for in every day living?

What materials can magnets work through?

Why won't they stick to wood?

How magnets can be used for a white board?