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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.
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संबंधित प्रश्न
State two characteristics of the mantle.
Classify the following rocks by selecting the correct option given below:
gneiss
Classify the following rocks by selecting the correct option given below:
limestone
What are Sills?
Which agents are responsible for deposition of sediments?
Explain this term associated with rocks: Fossil fuels
State the types of rocks for the formation of which the following process is involved.
Accumulation takes place over long periods of time in seas, lakes and streams.
Name the main types of rocks.
In what type of rocks do you find fossils and why?
Classify the following rock: Shale
Classify the following rock: Schist
An aggregate of minerals on the Earth’s Crust is called ______.
The word Ignis means rock.
The oldest sedimentary rocks of the world have been identified in ______.
______ are chemical substances which exist in nature.
Why are crystalline rocks called so?
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 |
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.
