Abeka 6 Science 3 Ch Checkup B-I
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Created by:
elliotcv26 on December 11, 2008
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18 terms
Terms | Definitions |
|---|---|
 rock | the hard material that composes the earth's crust |
| fossil | any trace left in rock by a plant or animal |
| gemstones | small deposits of igneous and metamorphic crystals in a rock |
| precious stones | the rarest, most durable and beautiful gems |
| ore | a rock containing a metal together with impurities |
| precious metals | metals known for their durability, rarity and beauty |
| iron | a practical metal that is strong and abundantly available; the most commonly used metal |
| copper | a reddish-orange metal that covers a penny; a good conductor of electricity and easy to shape into thin strands; two alloys containing copper are brass and bronze |
| fossil fuel | a fuel derived from the remains of plants (or animals); coal and petroleum are fossil fuels |
| petroleum | "rock oil"; a liquid fossil fuel that may have been formed from the remains of once-living creatures |
| cave | any hollow space in the earth's crust that has formed naturally and is large enough for a person to enter |
| speleology | the scientific study of caves |
| solution cave | a cave formed by the dissolving of underground rocks by water |
| magnetic field | the area surrounding a magnet in which the force of magnetism affects other objects |
| poles | the two ends of a magnet where the magnetic field seems strongest |
| electromagnet | a magnet that becomes magnetized only when it is hooked to a battery or some other source of electric current |
| magnetosphere | the region of space affected by the earth's magnetic field |
| solar wind | a stream of harmful particles that flows constantly from the surface of the sun |
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