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Science Ch 5 BIS
Vocabulary words
Term | Definition |
---|---|
mineral | natural, nonliving solid crystals that make up rocks |
luster | the way the surface of a mineral reflects light |
hardness | how easily the surface of a mineral can be scratched |
streak | color of the powder that a mineral leaves when scratched across a special plate |
cleavage | property of minerals to break along smooth, flat surfaces |
igneous | rocks that form from molten rock |
sedimentary | rocks that form when layers of sediments settle on top of one another and harden |
metamorphic | rocks that have changed as a result of heat and pressure |
landform | a natural land feature on Earth's surface |
weathering | process of rocks in Earth's crust slowly being broken into smaller pieces |
erosion | process of carrying away weathered bits of rock |
deposition | the laying down of pieces of rock |
fault | a break or crack in rocks where Earth's crust can move suddenly |
volcano | a landform that forms an opening in Earth's crust where magma reaches the surfaces |
drought | a period of weather that is much drier than usual |