Advertisements
Advertisements
Question
“Our earth is a playfield for two opposing groups of geomorphic processes.” Discuss.
Solution
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.
APPEARS IN
RELATED QUESTIONS
______ refers to a bowl-shaped depression found at the top of the volcano.
The point of origin of an earthquake is called the _________.
Match the following
| 1. Endogenetic process | Seismograph |
| 2. Mantle | Subduction Zone |
| 3. Convergent boundaries | Volcanic |
| 4. Earthquake | Pacific Ocean |
| 5. Composite volcano | SIMA |
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.
What is a Volcano?
Mention its major components volcano.
What are seismic waves?
Write about the Pacific Ring of fire.
Distinguish between Primary waves and Secondary waves.
In ______ boundary, the plates slide horizontally past each other.
The collision with the Eurasian Plate along the boundary between India and Nepal formed ______ Plateau.
Mauna Loa in Hawaii is an example of ______.
Earthquake is the shaking or trembling of the Earth’s ______.
Match the following:
| (a) | Focus | (i) | L-Waves |
| (b) | Surface Waves | (ii) | S-Waves |
| (c) | Seismometer | (iii) | P-Waves |
| (d) | Secondary Waves | (iv) | Hypocenter |
| (e) | Primary Waves | (v) | Instrument |
Match the following:
| (a) | Active Volcano | (i) | Mt. Kilimanjaro |
| (b) | Dormant Volcano | (ii) | Strata Volcano |
| (c) | Extinct Volcano | (iii) | Mt. St. Helens |
| (d) | Composite Volcano | (iv) | Mt. Fuji |
| (e) | Shield Volcano | (v) | Mauma loa |
Consider the given statement:
Statement I: Volcanoes can also be classified based on the periodicity of eruptions, as Active volcano, Dormant volcano, and Extinct volcano.
Statement II: A lava dome is roughly a circular mound formed due to the slow ejection of viscous lava from a volcano.
Which of the following statements(s) is/are true?
What are the Geomorphic processes?
Explain the major components of a volcano.
Give reason for the following:
A lava dome does not flow from into the vent.
Explain the term
Volcanism
What is the difference between the ‘magnitude’ and the ‘intensity’ of an earthquake?
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.
Distinguish between:
Atmosphere and Biosphere.
