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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
Write True or False. Rewrite the false statement correctly :
Igneous and sedimentary rocks can change into metamorphic rocks.
Differentiate between SIAL and SIMA.
What are minerals?
Classify the following rocks by selecting the correct option given below:
marble
Give one difference between Extrusive igneous and Intrusive igneous rocks.
Mention any two characteristics of Sedimentary Rocks.
Explain this term associated with rocks: Lithification of Rocks.
How are chemically-formed sedimentary rocks formed? Give examples.
Classify the following rock: Limestone
Classify the following rock: Basalt
Give one word for the following.
The lower part of ocean floor, comprising mainly of silica.
Fill in the blanks
Extrusive rocks are also known as ______ rocks.
Give one example of an area of: Igneous rocks
Give reasons for the following
Silicates are the most common rock forming minerals.
Find the difference between:
Igneous and sedimentary rocks
Classify and explain the rocks.
______ rocks are also called Primary rocks.
The world Igneous is derived from the Latin word ______ meaning ______.
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:
| Group 'A' | Group 'B' | ||
| A. | Granite | 1. | Bedrock |
| B. | Soil layer | 2. | Plutonic rock |
| C. | Barren island | 3. | Strip farming |
| D. | Soil conservation | 4. | Active Volcano |
