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प्रश्न
The continents are placed above the oceans.
उत्तर
The density of continents is lesser than the layer supporting the ocean beds, so the continents came floating upwards at the time of the formation and solidification of the earth, as the lighter things come upwards floating over the heavier things i. e. Sial is lighter than Sima
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संबंधित प्रश्न
Why is the earth’s interior in most part found in a solid state despite great heat and pressure?
Study the figure on the side and answer the question
What is known as Sial? How deep is the area marked by Sial?
Study the figure on the side and answer the question
Why is the expression ‘Nife’ so called?
Which are the two most abundant chemical elements in the Earth’s crust?
Explain briefly the structure of the earth.
______ is the rigid outer layer of the Earth.
Silica and Aluminium are the components of the ______.
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?
______ is a vent (or) and opening on the surface of the Earth crust.
