Advertisements
Advertisements
प्रश्न
What is SIAL?
What do you mean by SIAL?
Advertisements
उत्तर
Crust is the outer layer of the earth, where we live. The major elements of crust are silica (Si) and aluminium. Thus, it is called SIAL.
APPEARS IN
संबंधित प्रश्न
Give a geographical reason for the following:
The inner core of the earth is in a solid state.
Look at the figure on the side and answer the question:
Name the state (solid, liquid or gas) in which each part exists.
Look at the figure on the side and answer the question:
Which part of the earth is suitable for human habitation? Why?
Describe the layers of the interior of the earth and their chemical composition.
There are two transitional zones between the two consecutive layers of the interior of the earth. Name them and state their chief characteristics.
The presence of large quantities of ______ in the core is responsible for the Earth’s Gravitational force.
Match the following:
| (a) | Crust | (i) | 2,171 km |
| (b) | Upper Mantle | (ii) | 2,259 km |
| (c) | Lower Mantle | (iii) | 30 km |
| (d) | Outer Core | (iv) | 1221km |
| (e) | Inner Core | (v) | 720 km |
Consider the given statement:
- The thickness of the crust is greater below the continents than the ocean’s floor.
- All terrestrial planets have a lithosphere.
- The core is composed of Silica and Aluminium.
Which of the statement (s) is/are true?
What is SIMA?
Give reason for the following:
Generation of the Earth’s Magnetic field.
