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Magnetism
It's sooooo Attractive
| Statement | Awnser |
|---|---|
| Earth and some Earth materials have | magnetite properties. |
| Earth's core is made of | nickel and iron. |
| This may be responsible for | Earth's magnetic field. |
| Without touching them, | a magnet attracts things made of iron and either pushes or pulls on other magnets. |
| The amazing magnetic force is the | push or pull of a magnet on other magnetic material. |
| When the North Pole of the magnet is brought near the South Pole of another magnet, | they attract each other. |
| If like poles North to North or South to South, are brought together they | repel (push apart) each other. |
| Natural magnets are | naturally magnetized by Earth's magnetic field and are made of and iron ore that is call magnetite or lodestone. |
| A permanent magnet | is a object that keeps its magnetism after it has been magnetized. |
| Iron and nickel | are the most common materials magnets are made from. |
| A magnet has a north and south | magnetic pole. |
| Electromagnetism | is the magnetism produces when and iron core is magnetized by an electric current passing through a wire, which is coiled around it. |
| More loops the | stronger the current. |
| A magnetic field is an | area around a magnet where the magnetic force exists. |
| A compass is an | instrument used to determine geographic direction on Earth. |
| A electric motors use electromagnets that run everything from | refrigerators and washing machines to electric trains and robots. |
| Audio and video tape players, TV picture tubes, | copy machines and computers. |