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प्रश्न
What are the causes of metamorphism?
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उत्तर
The main causes are great temperature and pressure beneath the earth’s crust, which change the original texture and form of the rocks into dense, crystalline, and fine-grained rocks.
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संबंधित प्रश्न
Rocks and minerals play a very important role in our lives.
Can you imagine modern life without minerals?
How are rocks different from minerals?
Describe the process that leads to exfoliation.
What processes are involved in the formation of Igneous Rocks?
How are chemically-formed sedimentary rocks produced?
What are metamorphic rocks?
Classify the following rock: Coal
Fill in the blanks
______ rock contain a low percentage of silica and a high percentage of basic oxides.
Why are Sedimentary rocks called the Secondary rocks?
Give one term for the following statement:
Formed by evaporation in saline lakes.
Diamond is an example of _______ rock.
Parent Rock is converted to loose Rock by ______.
______ rocks are also called Primary rocks.
| A | B | ||
| 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. | 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.
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:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
