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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. |