Advertisements
Advertisements
प्रश्न
Differentiate between SIAL and SIMA.
Mention three points of difference between SIAL and SIMA.
Advertisements
उत्तर
| Sr. No. | SIAL | SIMA |
| 1. | The uppermost part of the earth’s crust is this one. | This is below the sial layer. |
| 2. | Its thickness is nearly 20 km. | Its average thickness is about 25 to 30 km. |
| 3. | It is composed of silica (Si) and aluminium (Al). | It is composed of silica (Si) and magnesium (mg). |
| 4. | It is not a continuous layer. It is not found on the ocean basin. | It is a continuous layer. |
| 5. | It is less dense. | It is more dense. |
| 6. | It is a granite layer. | It is a basaltic layer. |
Notes
Students should refer to the answer according to their questions.
APPEARS IN
संबंधित प्रश्न
Write True or False. Rewrite the false statement correctly :
Igneous and sedimentary rocks can change into metamorphic rocks.
Classify the following rocks by selecting the correct option given below:
coal
Classify the following rocks by selecting the correct option given below:
marble
Explain the structure of the earth’s interior?
Name the rocks which are most widespread on the earth.
Explain this term associated with rocks: Fossil fuels
Explain this term associated with rocks: Metamorphism
State the types of rocks for the formation of which the following process is involved.
Solidification of magma on the surface of the earth.
What is metamorphism?
Give a detailed account of lithiflcation of sedimentary rocks.
How are rocks important to us?
Distinguish between Regional and Contact metamorphism.
Classify the following rock: Granite
Give one word for the following.
Igneous rocks, which contain a high percentage of silica.
Give one word for the following.
The best example of chemically-formed sedimentary rock, which has been formed by the evaporation of water from solution containing minerals.
Give one term for the following statement:
Formed when mud layers compacted under great pressure composing 80% of this rock.
Give reasons for the following
Silicates are the most common rock forming minerals.
How is sand that flows in a river formed? Collect some information about where the sand comes from.
Find the difference between:
Igneous and sedimentary rocks
Which types of rocks are predominantly found at the following locations?
- Central Maharashtra
- South Konkan
- Vidarbha
Igneous rocks are found in the regions of volcanoes.
Distinguish between Metamorphic rock and sedimentary rock.
This is the storehouse of rocks.
An aggregate of minerals on the Earth’s Crust is called ______.
Igneous Rocks are ______ rocks.
Oldest Sedimentary rocks of the world has been identified in Green land.
The world Igneous is derived from the Latin word ______ meaning ______.
Sedimentary rocks are called stratified rocks.
What is thermal metamorphism?
Statement (1): Sedimentary rocks consist of many layers.
Statement (2): Sedimentary rocks are formed by the sediments deposited at different points of time.
