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6th Grade Chapter 4
Rocks
| Question | Answer |
|---|---|
| rock-forming mineral | the common minerals that make up most of the rocks of Earth's crust |
| a rock's texture is the | the look and feel of a rock's surface |
| igneous rock | a type of rock that forms from the cooling of molten rock at or below the surface |
| sedimentary rock | a type of rock that forms when particles from other rocks or the remains of plants and animals are pressed together and cemented together |
| metamorphic rock | a type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions |
| extrusive rock | an igneous rock that forms from lava on Earth's surface |
| intrusive rock | an igneous rock that forms when magma hardens beneath Earth's surface |
| deposition | a process in which sediment settles out of the water or wind carrying it |
| cementation | the process by which dissolved minerals crystallize and glue particles of sediment together into one mass |
| an organic rock is | chalk formed from sediments made of skeletons of microscopic living things in the ocean |
| chemical rock | a sedimentary rock that forms when minerals that are dissolved in a solution crystallize on Earth's surface |
| foliated | a term used to describe metamorphic rock that have grains arranged in parallel layers or bands |
| rock cycle | a series of processes on the surface and inside Earth that slowly changes rocks from one kind to another |
| coarse-grained rock | is when all the grains in a rock are large and easy to see |
| most metamorphic rock forms | deep underground |
| igneous rock that cools very quickly when it forms may have a texture that is | smooth and shiny with no visible grain |
| the most abundant intrusive rock in the continental crust | is granite |
| to describe a rock's texture, geologists determine | the size, shape, and pattern of the rock's grains |
| a coral reef forms from | skeletons of coral animals |
| over time, coral buried by sediments can turn into | limestone |
| geologists classify metamorphic rock according to | the arrangement of the grains that make up the rock |
| a rock is made up of | a mixture of minerals and other materials |
| erosion and deposition play roles in the formation of | sedimentary rock |
| the names of the three major groups of rocks refer to | how the rocks are formed |
| the characteristics that geologists use to identify rocks are | color, texture, and the rock's mineral composition |
| granite is a light-colored rock because | it is made up mostly of silica |
| because plate movements have raised ancient sea floors above sea level | limestone that began as coral reefs can be found on the continents |
| erosion on a mountain range that was pushed up as a result of two continental plates colliding will | lead to the formation of sedimentary rock |
| for granite to change into sandstone | granite particles would have to settle on the ocean floor |
Created by:
Mrs. Gordon
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