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science
chapter 4:Rocks
| question | answer |
|---|---|
| about __ minerals make up make up most of earth's crust. these minerals are known as _______ _______,___________ | rock-forming minerals |
| a rocks color provides clues to the rocks________ ________. | mineral composition |
| geologists observe the _______ and the ________ of crystals in a rock to identify the minerals that the rock contains. | shape and color |
| most rock are made up od particles of minerals or other ocks which geologist call___________. ________ give the rock texture. | grains |
| ________ is the look and felling of the rocks surface | texture |
| igneous rocks form from ________ and ________ | magma and lava |
| igneous rocks are classified according to their__________,___________ and _________ __________ | origin texture and mineral composition |
| ___________ igneous rocks is formed from lava the erupted onto the earth's surface | extrusive |
| ___________ igneous rocks is formed from magma that hardened beaneath earth's surface | intrusive |
| people through out history have used igneous rocks for _______ and ________ _________ | tools and building materials |
| examples of ignous rocks are ________,_________,_________ and _________ | basalt granite obsidian and pumice |
| sedimentary rock forms when particles of other rocks or the remains of plants and animals are _________ and _________ together. | pressed and cemented |
| most sedimentary rocks are formed through a series od processes ________,_______ ______ and ________ | erosion deposition compaction and cementation |
| when studying a rock sample geologists observe the rocks _______,________,_________ | mineral composition,color,texture |
| ____ are made up of mixtures of minerals and other materials | rocks |