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Chapter 5-1 Elsakka
Classifying Rocks
Question | Answer |
---|---|
what are rocks made of? | mixtures of minerals and other materials (p147, figure 2) |
What is the main way geologists study rocks? | Geolodists classify rocks according to how the rock form(the rocks origin) |
what is the 3 major groups of rock? | igneous, sedimentary, and metamorphic rock |
what is igneous rock? | It forms from the cooling of molten material-either magma or lava. |
What is sedimentary rock? | Forms when particles of other rock or the remains od plants and animals are pressed and cemented together. |
What is metamorphic rock? | formed when am existing rock is changed bye heat, pressure, or chemical reactions(most form deep underground) |
What type of rock is most likly to have a fossil? Why? | Sedimentary rock because sedimentary rock forms from the remains of dead plants and animals cemented together. |