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प्रश्न
State two characteristics of the mantle.
State two chief characteristics of the mantle.
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उत्तर
- The mantle is semi-solid.
- It is rich in iron and magnesium.
- This layer is about 2,850 km wide. Its average density is between 3.5 and 5.5.
संबंधित प्रश्न
Rocks and minerals play a very important role in our lives.
Can you imagine modern life without minerals?
Rocks and minerals play a very important role in our lives.
What problems would you face in their absence?
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: ______________.
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
The photograph shows you a type of rock that is widely used in the construction industry.
- Name the type of rock.
- How is it formed?
State two characteristics of Basic Igneous Rocks.
Explain this term associated with rocks: Extrusive Igneous Rocks
Explain this term associated with rocks: Fossil fuels
Distinguish between the following:
Calcarious and Carbonacious rocks.
Give a detailed account of lithiflcation of sedimentary rocks.
What is meant by a rock?
Name different types of sedimentary rocks.
What is meant by the term ‘metamorphism’?
Classify the following rock: Clay
Classify the following rock: Gypsum
Classify the following rock: Loess
Fill in the blanks
______ rocks are formed by the deposition of shells and skeletons of organism.
Give one example of an area of: Metamorphic rocks,
Give one term for the following statement:
Igneous rocks of deep seated origin.
Give one term for the following statement:
Sheet like body of igneous rock.
Give an example of a Plutonic rock.
How is sand that flows in a river formed? Collect some information about where the sand comes from.
Igneous rocks are found in the regions of volcanoes.
Parent Rock is converted to loose Rock by ______.
Lava comes out from a volcano.
Sedimentary rocks are called stratified 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.
