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earth science SOL3
| Question | Answer |
|---|---|
| characteristics of a mineral | naturally occuring, inorganic, solid, definite chemical composition and structure, non renewable rescources |
| what is the most abundant mineral group | silicates |
| what is an ore | material that is useful and profitable |
| what are quartz | the major mineral of glass and sand |
| igneous rocks form from..? | the cooling and crysallization of molten rock |
| intrusive igneous rocks | the slow cooling if magma inside the eart. coarse-grained texture. GRANITE |
| extrusive igneous rocks | quick cooling of lava outside the earth. fine-grained texture. may look glassy or have holes present. PUMICE, OBSIDIAN, BASALT |
| how are metamorphic rocks formed | from heat and pressure on existing rocks |
| contact metamorphism | small area in contact with an igneous intrusion. bakes rock and changes it |
| regional metamorphism | large area changed due to heat and pressure. usually with mountains |
| foliated texture | bands or layers of minerals. SHIST, SLATE, GNEISS |
| nonfoliated texture | nolayers. rocks have made a complete atomic change. MARBLE, QUARTZITE |
| how are sedimentary rocks formed | form rock fragments or organic matter. build up in layers called strata and fossils are found in them |
| clastic rocks | made of other rock fragments |
| conglomerate | round pebbles, sandstone-sand, shale. amde of compact clay |
| chemi9cal rocks | formed from precipitation or evaporation of liquids |
| mechanical weathering | broken down into pieces without a chemical change |
| chemical weathering | chnged into something chemically diffrent. (oxidation) |
| erosion | the breakdown and transport of earth materials by wind, water, gravity, glaciers. greatest agent of erosian is water |
| deposition | the dropping of earth materials after energy of motion of agent of erosion decreases to the point where it cannot carry materials any longer |
| which rock is formed both chemical and organically | limestone |
| what are the 3 major rock resources of Virginia | limestone, coal and titanium |
| how is soil formed | from the weathering of rocks and from organic activity |
| what does soil consist of | form loose fragments of rock and clay derived from weathered rock mixed with organic material |
| permeabillity | the ability of a material to transmit water |
| impermeable | water does not pass through this material |
| what is considered the zone of aeration | soil |
| aquifer | layer of rock that stores and transports water freely |
| what is the inner core | it is solif and mafe of iron and nickel |
| what is the mantle | the largest layer and is plastic like |
| what is continental crust made of | silicon and oxygen |
| oceanic crust | made of iron and magnesium |
| where is the youngest area of the ocean floor found | at mid-ocean ridges |
| what is the lithosphere | the crust and the upper mantle |
Created by:
mariarangoo
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