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प्रश्न
Find the difference between:
Igneous and sedimentary rocks
Give three points of difference between the igneous rocks and the sedimentary rocks.
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उत्तर
| Igneous Rocks | Sedimentary Rocks |
| These are formed due to the cooling and solidification of ‘magma’ and ‘lava’. | These rocks are formed due to continuous deposition and compaction of weathered pieces of rocks transported to various places by wind, glaciers, rivers, etc. |
| These are hard, homogeneous and heavy rocks. | These are brittle, layered and light in weight. |
| They lack fossils. | They show the presence of fossils. |
| Example: Basalt, Granite, etc. | Example: Sandstone, limestone, etc. |
Notes
Students should refer to the answer according to their questions.
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संबंधित प्रश्न
Rocks and minerals play a very important role in our lives.
Can you imagine modern life without minerals?
Fill in the blank
Granite is an example of intrusive ________ rocks.
Write True or False. Rewrite the false statement correctly :
Rocks are used in construction industries.
Classify the following rocks by selecting the correct option given below:
marble
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?
State two points of distinction between rocks and minerals.
Name any three elements of the earth’s crust.
Which rocks are associated with ores of metals?
Which rocks are associated with fossil fuels?
Distinguish between rocks and minerals.
How are igneous rocks classified on the basis of their chemical composition?
Give a detailed account of lithiflcation of sedimentary rocks.
In what type of rocks do you find fossils and why?
How are rocks important to us?
What is meant by the term ‘metamorphism’?
Classify the following rock: Shale
Classify the following rock: Coal
Classify the following rock: Dolomite
Classify the following rock: Slate
Classify the following rock: Marble
Classify the following rock: Schist
Give one word for the following.
Stratified rock formed organically but from vegetative matter-swamps and forests.
Why are Sedimentary rocks called the Secondary rocks?
Give one term for the following statement:
Sheet like body of igneous rock.
Give one term for the following statement:
Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.
How is Plutonic rock formed?
Give an example of a Plutonic rock.
Give reasons for the following
Man’s habitat is the biosphere and not the lithosphere in the true sense.
Igneous rocks are called primary rocks.
How are igneous rocks formed?
Classify and explain the rocks.
Oldest Sedimentary rocks of the world has been identified in Green land.
Explain about Petrology.
Explain the type of Igneous Rocks.
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 |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
