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science test
Question | Answer |
---|---|
naturally occurring | made from nature |
inorganic | made from non-living plants or organisums |
soild | an object that has a definite shape and volume |
definite chemical formula | when a mineral has to have a certin mineral and a certin amount of that mineral to be the same mineral |
crystal structure | a crystal is a solid, goemetric form that result from a repeating pattern of atoms or molecules |
color | the hue of a mineral (not a good way to identifiy a mineral) |
streak | the color of a minerals powder |
luster | the way a mineral reflects light |
clevage | a way that a mineral breaks, smooth and have flat surfaces |
fracture | a way that a mineral breaks, in no form or pattern, unevenly |
density | the amount of matter in a given amount of space |
hardness | the minerals resistence to being scratched |
special properties | special properties (naturally magnetic, double image...etc...) |
alloy | a solid mixture of 2 or more elements, at least 1 is a metal |
ore | a rock that contains a metalor other useful mineral that can be sold for profit |
what are the 3 types of mines? | open pit, strip, and shaft mines |
open pit mine | miner use giant earth moving equitment to dig a tremendous pit and remove ore deposits |
strip mine | earthmoving equipment scraps away soil to expose ore |
shaft mine | often have a network of tunnels that extend deep into the groud following the viens of ores |
what scale is used to rate the hardness of a mineral? | the mohs hardness scale |
what is the softest mineral on the mohs hardnesas scale? what is its rating? | talc with a rating of 1 |
what is the hardest mineral on the mohs hardness scale and what is its rating? | diamond with a rating of 10 |
what are the 3 ways a MINERAL CAN BE FORMED? | by metamorphism, from solutions, and when magma and lava cool |
what are the 3 different types of rock? | igneous rock, metamorphic rock, and sedimentary rock |
how does an igneous rock form and what are the 2 subgroups? | when magma and lava cool and the 2 subgroups are extrusive and intrusive |
how does metamorphic rock form and what are the subgroups? | it forms through heat and pressure, and the 2 groups and non-foliated(without parallel bands) and foliated( with parallel bands) |
how does sedimentary rock form and what are the subgroups? | sedimantary rock goes through the processes of weathering, erosion, deposition, cementation, and compaction and the subgrougs are clastic, chemical and organic |
organic sedimentary rock | sedimentary rock that formed from living or once living things |
clastic sedimentary rock | formed when sediments buried compacted and cemented together by calcite or quartz |
chemical sedimentary rock | formed when when water, usually seawater, evaporates |
what are the processes in which ignous rock forms? | melting and cooling |
what are the processes in which metamorphic rock forms? | heat presure and chemical reaction |
what are the processes in which sedimentary rock forms? | weathering erosion deposition compaction cementation |