Classify to organize objects or events into groups based on common characteristics.
Deposition the natural process of adding transported sediments to a landform.
Erosion the transport of fragments of rock by water, wind, ice, or gravity.
Extrusive igneous rock rock formed from the cooling of molten rock on Earth's surface.
Foliation the texture of a metamorphic rock in which mineral grains are aligned like the pages of a book.
Fossil the remains or traces of a once-living organism that is preserved in rock.
Igneous rock rock formed from the cooling of molten rock.
Intrusive igneous rock - rock formed from the cooling of molten rock below Earth's surface.
Lava molten rock that has erupted onto Earth's surface.
Lithification the compaction and cementing of sediment into rock.
Magma molten rock below Earth's surface.
Metamorphic rock rock that has been changed by heat and pressure.
Rock cycle a continuous series of events through which a rock is transformed from one type to another.
Sediment rock fragments that have been transported to a different location.
Sedimentary rock rock formed from sediments, organic remains, or chemical precipitates.
Clastic sedimentary rocks are composed of rock fragments cemented together.
Organic sedimentary rocks are composed of the remains of living organisms. Examples include fossil limestone and coal.
Chemical sedimentary rocks are formed from chemicals dissolved in water. Examples include rock salt and travertine (a type of limestone).
Soil the top layer of Earth's surface that supports plant growth.
Soil contains a mixture of rock fragments, clay, and organic material.
Strata layers of sedimentary rock that form from the deposition of sediments.
Stratum is the singular form of strata.
Texture the sizes, shapes, and positions of the grains in a rock.
Weathering the breakdown of rock due to rain, wind, ice, sunlight, and plants.
| 2312875028 | crystal | solid in which the atoms are arranged in an orderly, repeating pattern. |  | 0 |
| 2312875029 | hardness | measure of how easily a mineral can be scratched. |  | 1 |
| 2312875030 | luster | property of metals and alloys that describes having a shiny appearance or reflecting light. |  | 2 |
| 2312875031 | mineral | naturally occurring substance, with definite chemical composition and a crystalline structure. |  | 3 |
| 2312875032 | streak | color of a mineral when it is in powdered form. |  | 4 |
| 2312875033 | cleavage | The atoms are arranged so perfectly that crystals break along clean lines |  | 5 |
| 2312875034 | erosion | the transport of fragments of rock by water, wind, ice, or gravity. |  | 6 |
| 2312875035 | Igneous rock | rock formed from the cooling of molten rock; can be extrusive or intrusive depending on if it cooled outside (extrusive) or inside (intrusive) the earth. |  | 7 |
| 2312875036 | Lava | molten rock that has erupted onto Earth's surface. |  | 8 |
| 2312875037 | Magma | molten rock below Earth's surface. |  | 9 |
| 2312875038 | Metamorphic rock | rock that has been changed by heat and pressure; can have banding (foliated) or no banding (non-foliated). |  | 10 |
| 2312875039 | Rock cycle | a continuous series of events through which a rock is transformed from one type to another. |  | 11 |
| 2312875040 | Sediment | rock fragments that have been transported to a different location. |  | 12 |
| 2312875041 | Sedimentary rock | rock formed from sediments (clastic), plant or animal remains (organic), or chemical precipitates (chemical). |  | 13 |
| 2312875042 | Weathering | the breakdown of rock due to rain, wind, ice, sunlight, and plants. |  | 14 |
| 2312875043 | granite | A usually light colored intrusive igneous rock that is found in continental crust |  | 15 |
| 2312875044 | gneiss | A metamorphic rock that has ribbon like layers. It was made from other rocks that have been squeezed and heated a long time in the Earth. |  | 16 |
| 2312875045 | slate | A type of Metamorphic rock that was once shale rock formed by heat and pressure. |  | 17 |
| 2312875046 | limestone | A sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals; may or may not contain shells |  | 18 |
| 2312875047 | shale | A sedimentary rock formed by the deposition of successive layers of clay. |  | 19 |
| 2312875048 | sandstone | A sedimentary rock formed by cementing grains of sand over time. |  | 20 |
| 2312875049 | coal | Interesting rock composed of the remains of plants that lived in tropical swamps millions of years ago. Can be lower quality (sedimentary) or be acted upon by heat and pressure (metamorphic). |  | 21 |
| 2312875050 | marble | metamorphic rock that was once limestone |  | 22 |
| 2312875051 | fossils | -Traces of ancient life preserved in the layers/strata as shells, footprints, and bones. |  | 23 |
| 2312875052 | Extrusive Igneous Rock | Igneous rock that cools on the surface of the earth so it cools very quickly and has little time for crystals to form (small crystals); may have vesicles (air pockets). Example: Scoria |  | 24 |
| 2312875053 | Intrusive Igneous Rock | Igneous rock that cools inside the earth so it cools very slowly and has large crystals form. Example: Granite |  | 25 |
| 2312875054 | Clastic Sedimentary Rock | Sedimentary rock that forms when fragments of preexisting rocks are compacted or cemented together. Example: Sandstone |  | 26 |
| 2312875055 | Organic Sedimentary Rock | Sedimentary rock that forms from the remains of plants or animals. Example: Limestone |  | 27 |
| 2312875056 | Chemical Sedimentary Rock | Sedimentary rock that forms when minerals precipitate from a solution or settle from a suspension. Example: gypsum |  | 28 |
| 2312875057 | Foliated Metamorphic Rock | A metamorphic rock that gives the rock a layered appearance. Example: Gneiss | | 29 |
| 2312875058 | Non-Foliated Metamorphic Rock | A metamorphic rock that does not exhibit a banded or layered appearance. Example: Marble. |  | 30 |
