The Earth produces its own ________ field.

In magnetic materials, all of the ________ are pointing in the same direction.

A permanent magnet is a material that produces a ___________________ field without any ___________________ magnetic field being present.

Permanent magnets can be demagnetized by ___________________ them past the Curie point (approximately 1,060 °F).  

Every magnet has both a _________ pole and a __________ pole.

Certain materials respond to magnetic fields by becoming ______________ themselves. ____________ is one of these materials.

Some objects that normally aren't magnetic can become magnetized when connected to a circuit. Items that are magnetized in this way are called ________.

Probably the most useful thing about electromagnets is that they can be turned ________ and ________.

If two magnets are close together, the magnetic force will be ________.

If two magnets are placed so that a north pole and a south pole are facing each other, they will _____________ each other.

If two magnets are placed so that two ____________ poles or two ____________ poles are facing each other, they will repel each other.

Although magnetic fields are _____________, one common way that people investigate them is to use ________ filings.

By sprinkling iron filings in a magnetic field on a flat surface, it is possible to see the __________ of a magnetic field.

The image above shows how iron filings respond to magnetic fields generated by two magnets with ____________ poles facing each other.

The image above shows how iron filings respond to magnetic fields generated by two magnets with ____________ poles facing each other.

A horseshoe magnet will generate a magnetic field similar in shape to that of two ________ poles brought near each other.