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science test ch.2 L3
| Term | Definition |
|---|---|
| A _____ is an object that attracts iron and other materials that have magnetic qualities similar to iron. | magnet |
| Any material that a magnet attracts is a ____ _____. | magnetic material |
| A _____ ______ is a push or a pull a magnetic field applies to either a magnetic material or an electric current. | magnetic force |
| A magnet field and its force are _____ closer to the magnet and ____ farther away from the magnet. | stronger, and weaker |
| Every magnet has ______ magnetic poles. | two |
| If two magnetic south poles or two magnetic north poles are close each other , the magnets ______. | repel |
| If a magnet's magnetic north pole is near another magnet's magnetic south pole, the magnets ______ each other. | attract |
| Flowing molten iron and nickel in the earth's outer core create a _____ _______ around the earth. | magnetic field |
| the earth's magnetic south pole is near the earth's geographic _____ pole. | north |
| A ______ ______ is a region in a magnetic material in which the magnetic fields of the atoms all point in the same direction. | magnetic domain |
| Non-magnetic materials cannot be made into ______. | magnets |
| A magnetic material becomes a magnet as the magnetic fields of the materials magnetic domain line up to point in the same _____. | direction |
| A magnet that loses its magnetic fields quickly is called a _____ magnet. | temporary |
| A magnet that keeps its magnetic fields for a long time is called a _______ magnet. | permanent |
| A naturally occurring permanent magnet called _____ is found in the earth's crust. | lodestone |
| Permanent magnets can be made with electric devices called ______. | magnetizers |
| In 1820, the Danish scientist ____ ____ _____, noticed that a compass needle moved when a nearby electric current was switched on. | Hans Christian Orsted |
| The relationship between electricity and magnetism is called _______. | electromagnetism |
| A temporary magnet made with a current-carrying wire coil wrapped around a magnetic core is an ______. | electromagnet |
| The strength of an electromagnet can be controlled with the number of ____ in the coil and the amount of electric ___ in the coil. | loops and current |
Created by:
kkroberts6
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