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प्रश्न
What are metamorphic rocks?
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उत्तर
Metamorphic rocks are those rocks which were formerly igneous or sedimentary rocks, but owing to extreme heat and pressure in the interior of the earth it has been changed or altered to such an extent that they are quite different from what they once were slate, which is in reality clay, and marble’ which is in reality lime stone. Other examples of metamorphic rocks are quartzite from sand stone, graphite from coal, gneiss from granite and Mica from Schist.
संबंधित प्रश्न
Differentiate between SIAL and SIMA.
Give an example of intrusive igneous rock.
How are rocks different from minerals?
What is sills?
Explain this term associated with rocks: Lithification of Rocks.
Distinguish between the following:
Acid Igneous Rocks and Basic Igneous Rocks.
Name the main types of rocks.
Distinguish between Regional and Contact metamorphism.
Classify the following rock: Rock salt
Fill in the blanks
______ rocks are formed by the deposition of shells and skeletons of organism.
Fill in the blanks
______ is the best example of the wind deposited stratified rock.
Give one example of an area of: Igneous rocks
Why are Sedimentary rocks called the Secondary rocks?
Give one term for the following statement:
Igneous rocks of deep seated origin.
Give an example of a Plutonic rock.
Give reasons for the following
Extrusive rocks generally have small crystals.
Classify and explain the rocks.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
