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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
Fill in the blank
Granite is an example of intrusive ________ rocks.
Write True or False. Rewrite the false statement correctly :
Minerals are organic substances.
Write True or False. Rewrite the false statement correctly :
Basalt is an example of an intrusive igneous rock.
Write True or False. Rewrite the false statement correctly :
Igneous and sedimentary rocks can change into metamorphic rocks.
Differentiate between SIAL and SIMA.
What is the difference between the inner and the outer core?
Classify the following rocks by selecting the correct option given below:
gypsum
Classify the following rocks by selecting the correct option given below:
marble
Describe the process that leads to exfoliation.
Name three types of rocks.
Name the three stages of lithification of Sedimentary rocks.
Briefly define Mechanical Metamorphism.
State the types of rocks for the formation of which the following process is involved.
Solidification of magma on the surface of the earth.
What are metamorphic rocks?
Classify the following rock: Limestone
Classify the following rock: Quartzite
Classify the following rock: Schist
Give one word for the following.
The outer layer of the earth.
Give one word for the following.
Rocks formed by the cooling and solidification of molten rock from beneath the earth crust.
Give one word for the following.
Stratified rock formed organically but from vegetative matter-swamps and forests.
Give one word for the following.
A sedimentary rock, which is composed of microscopically fine, soft and smooth particles.
Fill in the blanks
______ rock contain a low percentage of silica and a high percentage of basic oxides.
Fill in the blanks
Extrusive rocks are also known as ______ rocks.
Give one term for the following statement:
It has a definite chemical composition with its own chemical and physical properties.
Give one term for the following statement:
Igneous rocks of deep seated origin.
Give one term for the following statement:
Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.
Give one term for the following statement:
Type of metamorphism in which changes are caused due to high pressure.
Give reasons for the following
Silicates are the most common rock forming minerals.
Match the following:
| A. | Basalt | 1. | Anthracite |
| B. | Limestone | 2. | Extrusive igneous |
| C. | Coal | 3. | Metamorphic rock |
| D. | Gneiss | 4. | Sedimentary rock |
Classify and explain the rocks.
What are metamorphic rocks?
This is the storehouse of rocks.
Which Soils are formed by the weathering of metamorphic rocks?
What are the characteristics of Sedimentary rocks?
Explain the different types of sedimentary 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 |
