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प्रश्न
Distinguish between the following:
Thermal and Dynamic Metamorphism.
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उत्तर
| Thermal Metamorphism | Dynamic Metamorphism |
| It takes place due to extreme temperature, which transforms the shape and texture of rocks. | It takes place due to excessive compression created by tectonic forces within the earth. |
| The heat may be due to hot magma or friction of rocks. | It takes place through physical or chemical changes by deep pressure. |
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संबंधित प्रश्न
Why is diamond clear and hard while graphite is soft?
Rocks and minerals play a very important role in our lives.
Can you imagine modern life without minerals?
Write True or False. Rewrite the false statement correctly :
Sedimentary rocks are formed by the cooling and solidification of molten rock called magma
Classify the following rocks by selecting the correct option given below:
basalt
How are sedimentary rocks formed?
Name three types of rocks.
Explain the formation of sedimentary rocks on the basis of agents of formation.
Classify the following rock: Coal
Classify the following rock: Gypsum
Classify the following rock: Quartzite
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
Fill in the blanks
______ is the best example of the wind deposited stratified rock.
Give one term for the following statement:
Rounded or sub-rounded fragments, usually water-born cobbles, pebble and gravel, cemented together by a matrix of calcium carbonate, silica, etc.
Why are the Igneous Rocks called Primary Rocks?
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
______ rocks are also known as stratified rocks.
What are the characteristics of Sedimentary rocks?
What is thermal metamorphism?
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.
| Group A | Group B | ||
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
