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प्रश्न
Name the types Sedimentary rocks based on agents of formation.
उत्तर
There are five main types of rocks on the basis of agents of formation:
- Riverine Rocks These are formed by the sediments deposited by running water or river.
- Lacustrine Rocks These are formed by the deposition of silt etc on the bed of lakes.
- Glacial Rocks These are formed by the debris carried on and deposited by glaciers.
- Aeolean Rocks These are formed by the deposition sand accumulation by the wind.
- Marine Rocks These are formed by the deposition of sediments at the ocean floor. These types are Calcarious and Carbonaceous sedimentary Rocks.
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संबंधित प्रश्न
Write True or False. Rewrite the false statement correctly :
Sedimentary rocks are formed by the cooling and solidification of molten rock called magma
Explain the structure of the earth’s interior?
The photograph shows you a type of rock that is widely used in the construction industry.
- Name the type of rock.
- How is it formed?
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Name the rocks which are most widespread on the earth.
State the types of rocks for the formation of which the following process is involved.
Formation of large crystals, coarse texture and slow cooling and compaction.
Name the main types of rocks.
Classify the following rock: Limestone
Give one word for the following.
A sedimentary rock, which is composed of microscopically fine, soft and smooth particles.
Why are the Igneous Rocks called Primary Rocks?
Give reasons for the following
Extrusive rocks generally have small crystals.
Distinguish between Intrusive and Extrusive Rocks
Choose the incorrect statement from the following.
How are igneous rocks formed?
Explain about Petrology.
______ refer to rock in Greek.
Mention some uses of rocks.
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 |
