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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
Why is diamond clear and hard while graphite is soft?
Why is coal hard and chunky?
Fill in the blank
Granite is an example of intrusive ________ rocks.
Classify the following rocks by selecting the correct option given below:
coal
Classify the following rocks by selecting the correct option given below:
basalt
Classify the following rocks by selecting the correct option given below:
schist
Explain the structure of the earth’s interior?
What are metamorphic rocks?
Why are the igneous rocks also called the primary rocks?
Mention any two characteristics of Sedimentary Rocks.
Which agents are responsible for deposition of sediments?
Distinguish between rocks and minerals.
Give a detailed account of lithiflcation of sedimentary rocks.
Name the main types of rocks.
Differentiate between Rock and Mineral
How are chemically-formed sedimentary rocks produced?
Classify the following rock: Dolomite
Classify the following rock: Gneiss
Give one word for the following.
The lower part of ocean floor, comprising mainly of silica.
Give one word for the following.
The core of the earth occupied by rock in iron and nickel.
Fill in the blanks
______ is formed, when the angular and coarse grains of some durable minerals are cemented together.
State the properties of metamorphic rocks.
Give one term for the following statement:
Formed when mud layers compacted under great pressure composing 80% of this rock.
Why fossils are preserved in Sedimentary and not in Igneous rocks?
Give reasons for the following
Silicates are the most common rock forming minerals.
Igneous rocks are called primary rocks.
Choose the incorrect statement from the following.
Distinguish between Metamorphic rock and sedimentary rock.
How are igneous rocks formed?
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 |
Mention the types of rocks based on formation?
The types of rocks based on formation are
______ into slate caused by thermal metamorphism.
The word Ignis means rock.
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.
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.
