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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
Conglomerate is an example of _____________ rocks.
Differentiate between SIAL and SIMA.
How are sedimentary rocks formed?
Name two important landforms made by Igneous Rocks.
Which rocks are associated with fossil fuels?
Give two examples of sedimentary rocks.
How are igneous rocks classified on the basis of their chemical composition?
What are the causes of metamorphism?
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.
Give one example of an area of: Metamorphic rocks,
Why are Sedimentary rocks called the Secondary rocks?
Fill in the blank below:
______are intrusions of igneous rock that are vertical in shape
______ is known as the primary rocks.
Igneous rocks are found in the regions of volcanoes.
Distinguish between:
Internal Processes and External processes.
The word Ignis means rock.
Intrusive Igneous rocks are also called ______ rocks.
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.
