| 1 |
A magnet is a material or object that produces a magnetic field. |
| 2 |
The magnetic field is invisible and is responsible for the force that pulls on or pushes away other materials like iron, steel, cobalt and nickel. |
| 3 |
The magnetic field is an energy that attracts or repels other magnetized objects. |
| 4 |
Permanent magnets are made from a material that is magnetized and creates a magnetic field. Most refrigerators are magnetic. |
| 5 |
Magnetic needles are used in a compass to indicate true magnetic north. |
| 6 |
Magnetic compasses on ships are complicated instruments that sailors use to navigate around the world. |
| 7 |
Christopher Columbus is a historical sailor that used the magnetic compass when crossing the Atlantic Ocean. |
| 8 |
There are fluctuations of the magnetic field known as magnetic storms and substorms, and the polar aurora or "northern lights," appearing in the night skies of places like Alaska and Norway. |
| 9 |
A magnetic storm is a sudden severe disturbance of the Earth's magnetic field caused by emissions of charged particles from the sun. |
| 10 |
Magnets are found in toys, windows and doors and some very large magnets are used in factories and construction equipment. |