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प्रश्न
What are metamorphic rocks?
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.
APPEARS IN
संबंधित प्रश्न
Classify the following rocks by selecting the correct option given below:
granite
Classify the following rocks by selecting the correct option given below:
sandstone
Explain this term associated with rocks: Laccoliths and Batholiths
Distinguish between the following: Acid Igneous Rocks and Basic Igneous Rocks.
Give a detailed account of lithiflcation of sedimentary rocks.
Fill in the blanks
Extrusive rocks are also known as ______ rocks.
Give one example of an area of: Igneous rocks
State the properties of metamorphic rocks.
Give one term for the following statement:
It has a definite chemical composition with its own chemical and physical properties.
Give one term for the following statement:
Igneous rocks of deep seated origin.
Give one term for the following statement:
Sheet like body of igneous rock.
Fill in the blank below:
______are intrusions of igneous rock that are vertical in shape
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Chemical sedimentary rocks are found in the beds of reservoirs.
Intrusive Igneous rocks are also called ______ 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.
Match the following.
| A. | Granite | 1. | Bed rock |
| B. | Soil layer | 2. | Plutonic rock |
| C. |
Barren island |
3. | Strip farming |
| D. | Soil conservation | 4. | Active Volcano |
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
