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प्रश्न
“Our earth is a playfield for two opposing groups of geomorphic processes.” Discuss.
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उत्तर
It is absolutely right to say that our earth is playfield for two opposing groups of forces. These forces are exogenic and endogenic. The external forces are known as exogenic forces and the internal forces are known as endogenic forces. The differences in the internal forces operating from within the earth which built up the crust have been responsible for the variations in the outer surface of the crust. The earth’s surface is being continuously subjected to external forces induced basically by energy (sunlight). Of course, the internal forces are still active though with different intensities. That means, the earth’s surface is being continuously subjected to by external forces originating within the earth’s atmosphere and by internal forces from within the earth.
The actions of exogenic forces result in wearing down (degradation) of relief/elevations and filling up (aggradation) of basins/depressions, on the earth’s surface. The endogenic forces continuously elevate or build up parts of the earth’s surface and hence the exogenic processes fail to even out the relief variations of the surface of the earth. So, variations remain as long as the opposing actions of exogenic and endogenic forces continue. In general terms, the endogenic forces are mainly land building forces and the exogenic processes are mainly land wearing forces.
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संबंधित प्रश्न
The movement of tectonic plates is induced by ______ energy.
The movement of plates that creates stress and tension in the rocks causing them to stretch and cracks result in ______.
Match the following
| 1. Endogenetic process | Seismograph |
| 2. Mantle | Subduction Zone |
| 3. Convergent boundaries | Volcanic |
| 4. Earthquake | Pacific Ocean |
| 5. Composite volcano | SIMA |
- Mt. Fuji is a dormant volcano.
- Mt. Kilimanjaro is a dormant volcano.
- Mt. Tanzania is a dormant volcano.
Which of the statement(s) is/are true?
Statement I: Mountain ranges are formed by the collision of tectonic plates
Statement II: The movement of tectonic plates is due to the thermal energy from the mantle.
Define plate tectonics.
Write about the Pacific Ring of fire.
Mention its types of seismic waves.
Write a note on the internal and external processes of Earth.
How are volcanoes classified based on the periodicity of their eruptions?
Explain the effects of Volcanoes.
On the given outline map of the world, mark the following:
Pacific Ring of fire
The movement of tectonic plates is due to ______ energy from the mantle.
______ this is a dead volcano
Earthquake is the shaking or trembling of the Earth’s ______.
Match the following:
| (a) | Convergent Boundary | (i) | Away from each other |
| (b) | Divergent Boundary | (ii) | Tectonic Plates |
| (c) | Transform Boundary | (iii) | Towards each other |
| (d) | Huge slabs of rocks | (iv) | Folding |
| (e) | Lateral compressional forces | (v) | Horizontally past each other |
What is a subduction zone?
Explain the major components of a volcano.
Give reason for the following:
Formation of the Tibetan Plateau.
Give reason for the following:
A lava dome does not flow from into the vent.
Explain the term
Volcanism
The sixth deadliest natural disaster due to the Tsunami caused in the year ______.
Consider the given statement
- The plates move vertically in convergent Boundary.
- The plates pull away from each other in the Transform boundary.
- The plates slide horizontally past each other in Transform Boundary.
What do you know about the Active Volcano?
Which one of the following processes is a gradational process?
