Advertisements
Advertisements
प्रश्न
State two characteristics of the mantle.
State two chief characteristics of the mantle.
Advertisements
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
Discuss the importance of rocks for the construction business.
Fill in the blank
Sedimentary rocks are formed from _____________ accumulated over long periods.
Classify the following rocks by selecting the correct option given below:
sandstone
How are rocks different from minerals?
State two points of distinction between rocks and minerals.
Give one difference between Extrusive igneous and Intrusive igneous rocks.
Name two important landforms made by Igneous Rocks.
Which rocks are associated with ores of metals?
Name the three stages of lithification of Sedimentary rocks.
Distinguish between the following:
Sills and Dykes.
State the types of rocks for the formation of which the following process is involved.
Formation of large crystals, coarse texture and slow cooling and compaction.
Describe how igneous rocks are formed.
State the chief characteristics of metamorphic rocks.
Classify the following rock: Rock salt
Give one word for the following.
The lower part of ocean floor, comprising mainly of silica.
Fill in the blanks
______ is formed, when the angular and coarse grains of some durable minerals are cemented together.
Igneous rocks are called primary rocks.
How are igneous rocks formed?
Rocks are classified into ______ types.
The oldest sedimentary rocks of the world have been identified in ______.
The world Igneous is derived from the Latin word ______ meaning ______.
Sedimentary rocks are called stratified rocks.
What are the characteristics of Sedimentary rocks?
Explain the different types of sedimentary 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. | 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.
