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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
Differentiate between SIAL and SIMA.
What is the difference between the inner and the outer core?
What are minerals?
Classify the following rocks by selecting the correct option given below:
granite
Classify the following rocks by selecting the correct option given below:
gypsum
How are sedimentary rocks formed?
Distinguish between the following pair:
Degradation and aggradation
Why are the igneous rocks also called the primary rocks?
Name the rocks which are most widespread on the earth.
Explain this term associated with rocks: Laccoliths and Batholiths
How are igneous rocks classified on the basis of their chemical composition?
Classify the following rock: Peat
Classify the following rock: Loess
Give one word for the following.
The lower part of ocean floor, comprising mainly of silica.
Give one word for the following.
Igneous rocks, which contain a low percentage of silica.
Fill in the blanks
______ is the best example of the wind deposited stratified rock.
State the properties of metamorphic rocks.
Give one term for the following statement:
Sheet like body of igneous rock.
How is sand that flows in a river formed? Collect some information about where the sand comes from.
______ is known as the primary rocks.
Choose the incorrect statement from the following.
Distinguish between Metamorphic rock and sedimentary rock.
What are fossils?
The word ‘Igneous’ is derived from the ______ word.
Igneous Rocks are ______ rocks.
______ refer to rock in Greek.
Minerals exist in nature ¡n the form of ______ or ______.
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 |
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
