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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.
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Classify the following rocks by selecting the correct option given below:
marble
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Distinguish between the following pair:
Degradation and aggradation
Give one difference between Extrusive igneous and Intrusive igneous rocks.
Which rocks are associated with ores of metals?
Which rocks are associated with fossil fuels?
Name the types Sedimentary rocks based on agents of formation.
State the types of rocks for the formation of which the following process is involved.
Accumulation takes place over long periods of time in seas, lakes and streams.
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Give some examples of metamorphic rocks formed from sedimentary and igneous rocks.
Classify the following rock: Gypsum
Classify the following rock: Basalt
Classify the following rock: Slate
Classify the following rock: Marble
Give one word for the following.
The lower part of ocean floor, comprising mainly of silica.
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
Give one word for the following.
The best example of chemically-formed sedimentary rock, which has been formed by the evaporation of water from solution containing minerals.
Fill in the blanks
______ rocks cover wide area in Peninsular India and Columbia, the Snake Plateau of the U.S.A.
Give one example of an area of: Sedimentary rocks in India
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:
Fine grained metamorphic rock, generally produced by the low grade metamorphism of shale.
Give an example of a Plutonic rock.
How is sand that flows in a river formed? Collect some information about where the sand comes from.
How are igneous rocks formed?
Classify and explain the rocks.
Match the following:
| (a) | Igneous | (i) | Magma |
| (b) | Sedimentary | (ii) | Transformation |
| (c) | Metamorphic | (iii) | Gypsum |
| (d) | Molten material | (iv) | Basalt |
| (e) | Rock Cycle | (v) | Marble |
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______ into slate caused by thermal metamorphism.
The world Igneous is derived from the Latin word ______ meaning ______.
Sedimentary rocks are called stratified rocks.
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.
