Rocks are a combination of minerals and other materials (organic / inorganic matter) Back to Menu
Texture is the size, shape, or pattern of the grains that make up a rock. Back to Menu
Fine grained (difficult to see) and Coarse grained (easy to see) Back to Menu
This picture illustrates the Rock Cycle: the recurring process of rock creation and destruction. Back to Menu
What are the 3 types of rocks? Briefly describe how each type is formed.
Igneous are formed from cooling of molten material. Sedimentary are formed from compaction of sediments. Metamorphic are formed from heat and pressure. Back to Menu Final Jeopardy
Lavais molten material that reaches the surface. Magmais molten material below the surface. Back to Menu
Origin Texture Mineral Composition Back to Menu
Intrusive rocks form inside Earth. Extrusive rocks form on Earth’s surface. Back to Menu
Coarse Grain: can be seen with the unaided eye Fine Grain: small and difficult to see Porphyritic: both coarse & fine grains No grains: cooled too quickly Back to Menu
What can you determine about the chemical composition of these two igneous rocks?
One has a high silica content (felsic), and the other has a very low silica content (mafic). Back to Menu Final Jeopardy
The … Back to Menu
The forces of Heatand Pressure. Back to Menu
Texture Appearance Composition Crystal Structure Density Increases Back to Menu
No. Metamorphic rocks go through extreme heat and pressure, which would destroy any fossils present. Sedimentary rocks are the only type that will contain fossils. Back to Menu
Metamorphic rocks can be classified in two ways. Describe what they are.
Metamorphic rocks can be either Foliated (grains arranged in layers) or Non-Foliated (grains arranged randomly). Back to Menu Final Jeopardy
DAILY DOUBLE! Explain Weathering and Erosion.
Weathering is the breaking down of material into sediment. Erosion is the carrying away of sediment by wind or water. Back to Menu
Weathering Erosion Deposition Compaction Cementation Back to Menu
Clasticare rock fragments squeezed together. Organic contain remains of plants and animals. Chemical form when dissolved minerals crystallize Back to Menu
Mechanical Weathering includes Abrasion, freeze/thaw, plants, and animal activity. Chemical Weathering includes Acid rain, water, oxygen, & carbon dioxide. Back to Menu Final Jeopardy
A1 Back to Menu
A2 Back to Menu
A3 Back to Menu
A4 Total Energy Back to Menu