Section 2: Inside a Magnet
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13 terms
Terms | Definitions |
|---|---|
 atom | basic unit of matter, and the smallest particle of an element |
| element | any substance that cannot be broken down into simpler substances |
| nucleus | the center of the atom which contains the protons and neutrons; in cells, structure that contains the cell's genetic material (DNA) and controls the cell's activities |
| proton | a subatomic particle that has a positive charge and that is found in the nucleus of an atom |
| electron | negatively charged particle; located outside the atomic nucleus |
| magnetic domain | Groups of atoms with aligned magnetic poles |
| ferro magnetic material | A material that shows strong magnetic properties; __________________ can be magnetized because it contains magnetic domains. |
| temporary magnet | a magnet made from a material that easily loses its magnetism |
| How can an atom behave like a magnet? | atoms contain neutrons and positively charged protons in the nucleus. negatively charged electrons move randomly throughout the atom. Positive and Negative attract. |
| How are magnetic domains arranged in a magnetic material? | In a line, pointing arranged in the same direction. |
| How can magnets be changed? | To Destroy the Magnet 1. Drop it 2. Strike it hard To Magnetize 1. Rub in 1 direction of the pole with a pole of the magnet with a paper clip (p. 18) |
| Activity: How can materials become magnetic? (p. 14) | clear plastic tube and a magnet |
| Permanent Magnet | a magnet made of material that keeps its magnetism for a long time |
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