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प्रश्न
Distinguish between the following pair:
Degradation and aggradation
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उत्तर
| Sr. No. | Degradation | Aggradation |
| 1. | Wearing down or lowering of land surface. | Building up or raising of land surface. |
| 2. | Caused by erosion (by rivers, wind, glaciers, sea waves). | Caused by deposition of sediments |
| 3. | Creates landforms like valleys, gorges, canyons. | Creates landforms like floodplains, deltas, sand dunes. |
| 4. | Example: River cutting its bed deeper. | Example: River depositing silt on floodplains. |
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संबंधित प्रश्न
State two points of distinction between rocks and minerals.
Explain this term associated with rocks: Extrusive Igneous Rocks
Give some examples of metamorphic rocks formed from sedimentary and igneous rocks.
Classify the following rock: Clay
Give one word for the following.
The outer layer of the earth.
Fill in the blanks
______ is formed, when the angular and coarse grains of some durable minerals are cemented together.
______ is the kind of metamorphic rock using which Taj Mahal was built.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Diamond is an example of _______ rock.
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
