Distinguish between Endogenic and Exogenic forces In points for class 7 . (3-4 points)
Answers
Answer:
Endogenic forces originate from within the surface of the earth. Exogenic or external forces are forces that occur on or above the earth's surface. Endogenic forces include earthquakes, mountain formation. Exogenic forces include the tidal force of the moon, erosion.
Explanation:
Endogenic Forces
Exogenic Forces
These are internal forces that exist deep inside the Earth.
These are external forces that operate and act on the surface of the Earth.
These forces are also known as ‘constructive forces’ as they create relief features on the surface of the Earth. These forces are also known as ‘destructive forces’ as they at times result in destruction of the existing landforms through weathering and erosional activities.
The ultimate source of energy behind forces that drive endogenic movements is earth’s internal heat. Weathering, mass wasting, erosion, and deposition are the main exogenic processes.
Differences in temperature and pressure (temperature gradients or geothermal gradients and pressure gradients) among various layers of the earth give rise to density differences and these density differences give rise to conventional currents. All the movements either within the earth or on the surface of the earth occur due to gradients– from higher levels to lower levels, from high pressure to low pressure etc.
Convection currents in the mantle drive the lithospheric plates (crust and upper mantle) and the movement of the lithospheric plates (tectonics) is the cause behind endogenic movements. The exogenic forces derive their energy from the atmosphere determined by the ultimate energy from the sun and also the gradient created by tectonic factors. Those slopes on earth surfaces are mainly created by tectonic factors or earth movements due to endogenic forces.
Endogenic forces produce after-effects that are visible only after it causes sudden damage. Exogenic forces create changes visible over a period of thousands or millions of years.
Examples: Earthquakes and volcanic eruptions. Examples: Winds, rivers, glaciers etc