| A | B |
|---|
| weathering | process that breaks rocks into smaller pieces |
| acids | Weathering happens when rocks react with natural _________. |
| minerals | inorganic,solid materials found in nature |
| inorganic | a mineral that was never alive and was not formed from plant or animal remains. |
| soil | a mixture of weathered rock, organic matter, water, and air that supports the growth of plant life. |
| rocks | These are usually made from 2 or more minerals. |
| gems | minerals that are rare and can be cut and polished. |
| ore | A mineral that contains enough of a useful substance to be sold for a profit. |
| true | Some minerals form when magma cools (True or False) |
| true | Some crystals are formed from minerals dissolved in liquids when the liquid evaporates (T or F) |
| false | Fracture is the tendencey of a mineral to break along a smooth, flat surface. (T or F) |
| false | Solid materials that have a repeating pattern are carbonic acid. (T or F) |
| false | There are 2,345 known minerals (T or F) |
| true | Many everyday products are made from minerals (T or F) |
| true | Oxygen is a major cause of chemical weathering (T or F) |
| ice weding, plant roots, burrowing animals | Factors that cause mechanical weathering. |
| Natural acids, plant acids, effects of oxygen | Factors that cause chemical weathering. |
| climate, organisms, tannic acid | Factors that affect soil formation |
| warm, moist air | Chemical weathering is faster in areas with ________. |
| oxidation | process that happens when materials containing iron are exposed to water and oxygen. |
