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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
Fill in the blank
Granite is an example of intrusive ________ rocks.
What are minerals?
Classify the following rocks by selecting the correct option given below:
marble
How are rocks different from minerals?
Distinguish between the following:
Sills and Dykes.
Distinguish between the following:
Acid Igneous Rocks and Basic Igneous Rocks.
State the types of rocks for the formation of which the following process is involved.
Decomposition of organic matter at different stages and over different periods of time.
How are igneous rocks classified on the basis of their chemical composition?
What are the causes of metamorphism?
How are chemically-formed sedimentary rocks produced?
Give one word for the following.
The core of the earth occupied by rock in iron and nickel.
Fill in the blanks
Extrusive rocks are also known as ______ rocks.
Give one term for the following statement:
Type of metamorphism in which changes are caused due to high pressure.
Find the difference between:
Igneous and sedimentary rocks
______ is the kind of metamorphic rock using which Taj Mahal was built.
How are igneous rocks formed?
Igneous Rocks are ______ rocks.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
