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प्रश्न
Distinguish between Regional and Contact metamorphism.
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उत्तर
Regional metamorphism When metamorphism of bed rocks takes place over a very large area, it is called Regional metamorphism. It is usually caused by the movement of the earth’s crust. Contact metamorphism when it takes place over a small area, it is called Local Metamorphism or Contact Metamorphism. It commonly occurs when hot magma comes in contact with other rocks.
संबंधित प्रश्न
Fill in the blank
Sedimentary rocks are formed from _____________ accumulated over long periods.
Write True or False. Rewrite the false statement correctly :
Basalt is an example of an intrusive igneous rock.
The photograph shows you a type of rock that is widely used in the construction industry.
- Name the type of rock.
- How is it formed?
Describe the process that leads to exfoliation.
Distinguish between the following:
Acid Igneous Rocks and Basic Igneous Rocks.
What physical agents are involved in the sedimentary rocks?
Classify the following rock: Peat
Classify the following rock: Quartzite
Classify the following rock: Marble
Give one example of an area of: Sedimentary rocks in India
Give one term for the following statement:
Formed by evaporation in saline lakes.
Igneous rocks are called primary rocks.
Explain the type of Igneous Rocks.
______ rocks are also known as stratified rocks.
Intrusive Igneous rocks are also called ______ rocks.
Explain Dynamic Metamorphism.
Match the following.
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Match the following:
| Group 'A' | Group 'B' | ||
| A. | Granite | 1. | Bedrock |
| 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 |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
