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प्रश्न
State two characteristics of Basic Igneous Rocks.
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उत्तर
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Higher Percentage of Oxides: They have a higher percentage of iron and magnesium oxides, giving them a dark colour.
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Low Silica Content: They contain less silica compared to acidic rocks, making their magma more fluid.
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संबंधित प्रश्न
Fill in the blank
Granite is an example of intrusive ________ rocks.
Fill in the blank
A category of rock which is formed by the alteration of the parent rock due to heat and pressure is called: ______________.
Write True or False. Rewrite the false statement correctly :
Igneous and sedimentary rocks can change into metamorphic rocks.
What is crust?
Which rocks are associated with ores of metals?
Give one term for the following statement:
Sheet like body of igneous rock.
Find the difference between:
Igneous and sedimentary rocks
Which types of rocks are predominantly found at the following locations?
- Central Maharashtra
- South Konkan
- Vidarbha
Igneous rocks are found in the regions of volcanoes.
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
Mention a few specimens of magnificent rock-cut architecture in India?
How are igneous rocks formed?
Igneous Rocks are ______ rocks.
______ are chemical substances which exist in nature.
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. | Granite | 1. | Bed rock |
| B. | Soil layer | 2. | Plutonic rock |
| C. |
Barren island |
3. | Strip farming |
| D. | Soil conservation | 4. | Active Volcano |
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.
