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Question
Give one term for the following statement:
Type of metamorphism in which changes are caused due to high pressure.
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Solution
Dynamic metamorphism.
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Rocks and minerals play a very important role in our lives.
What problems would you face in their absence?
How are rocks different from minerals?
How are sedimentary rocks formed?
The photograph shows you a type of rock that is widely used in the construction industry.

- Name the type of rock.
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Classify the following rock: Gneiss
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It has a definite chemical composition with its own chemical and physical properties.
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______ is known as the primary rocks.
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An aggregate of minerals on the Earth’s Crust is called ______.
______ refer to rock in Greek.
Why are crystalline rocks called so?
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 |
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 |
