Science Vocabulary - Chapter 9 Magnetism and Electromagnets
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Created by:
rcrawford2011 on November 14, 2011
Description:
Houghton-Mifflin California Science 4th Grade
Magnetism and Electromagnets
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11 terms
Terms | Definitions |
|---|---|
 aurora | A display of lights in the sky caused by particles from the Sun interacting with Earth's magnetic field and atmosphere. |
| compass | An instrument that senses magnetic north, using a free-moving magnet. |
| electromagnet | A strong temporary magnet that uses electricity to produce magnetism. |
| fossil fuels | Coal, oil and natural gas. |
| generator | A device that uses magnetism to convert energy of motion into electrical energy. |
| magnet | An object that attracts certain metals, mainly iron. |
| magnetic field | The space in which the force of the magnet can act. |
| magnetic poles | The areas on a magnet where the force of the magnet is greatest. |
| motor | A device that changes electrical energy into energy of motion. |
| permanent magnet | An object that keeps its magnetism for a long time. |
| temporary magnet | An object that loses its magnetism after a short time. |
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