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प्रश्न
Give reasons for the following
Silicates are the most common rock forming minerals.
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उत्तर
Silicates are the most common rock forming minerals because they are most common minerals in the Earth’s crust.
संबंधित प्रश्न
Fill in the blank
Sedimentary rocks are formed from _____________ accumulated over long periods.
Classify the following rocks by selecting the correct option given below:
marble
How are sedimentary rocks formed?
What is Geology?
Name any three elements of the earth’s crust.
Distinguish between the following:
Plutonic and Volcanic rocks.
Distinguish between the following:
Acid Igneous Rocks and Basic Igneous Rocks.
Name the main types of rocks.
Give some examples of metamorphic rocks formed from sedimentary and igneous rocks.
Classify the following rock: Quartzite
Give one word for the following.
The lower part of ocean floor, comprising mainly of silica.
Give one word for the following.
Stratified rock formed organically but from vegetative matter-swamps and forests.
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: Igneous rocks
Why fossils are preserved in Sedimentary and not in Igneous rocks?
How is sand that flows in a river formed? Collect some information about where the sand comes from.
Which of the following monuments are built-in igneous rock?
- The Taj Mahal
- Fort Raigad
- The Red Fort
- Ellora Sculpture
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. | 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 |
