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प्रश्न
Describe the process that leads to exfoliation.
उत्तर
When the surface layers of rounded rocks and boulders gradually peel off in layers is called exfoliation. This occurs due to expansion of the outer layer during the day and the contraction of the same layer during the night, repeatedly over a period of time.
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संबंधित प्रश्न
Fill in the blank
Sedimentary rocks are formed from _____________ accumulated over long periods.
How are igneous rocks formed?
State two points of distinction between rocks and minerals.
Classify the following rock: Granite
Why are the Igneous Rocks called Primary Rocks?
How is Plutonic rock formed?
Give an example of a Plutonic rock.
______ are chemical substances which exist in nature.
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.
