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17 Cards in this Set
- Front
- Back
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Igneous Rock |
Formed when lava or magma cools and hardens |
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Metamorphic Rock |
Formed when igneous or sedimentary rock is under extreme heat and pressure |
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Sedimentary Rock |
Formed when sediment is compacted and cemented. This is also called lithification. |
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Sediment |
Formed when rocks are weathered and eroded |
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magma |
melted rock beneath the earth's surface |
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lava |
melted rock above the earth's surface |
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erosion |
happens when rocks and sediments are picked up and moved to another place by ice, water, wind or gravity. |
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weathering |
the process where rock is dissolved, worn away, or broken down into smaller and smaller pieces. |
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deposition |
when ice melts or wind and water slow down, they can't carry as much sediment--the sediment is dropped, or deposited, in landforms |
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gemstones |
rare and pretty minerals |
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diamond |
the most famous gemstone and the hardest mineral in the world--used for jewelry, but also used in drills and saws for cutting |
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geology |
the study of our planet, Earth-- how it was made, what it is made of, and how it has changed over time |
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diamonds, galena, quartz, & bauxite |
four minerals found in Arkansas |
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rock |
a naturally occurring mixture of minerals and other material |
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The only rock where fossils are commonly found |
sedimentary rock |
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igneous |
this means formed by fire |
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metamorphic |
this means change |
