Internal Forces
Internal Forces
The earth has an infinite variety of landforms. Some parts of the lithosphere may be rugged and some flat. These landforms are a result of two processes. The ground you are standing on is slowly moving. Within the earth, a continuous movement is taking place. The first or the internal process leads to the upliftment and sinking of the earth’s surface at several places. The second or the external process is the continuous wearing down and rebuilding of the land surface.The wearing away of the earth’s surface is called erosion. The surface is being lowered by the process of erosion and rebuilt by the process of deposition. These two processes are carried out by running water, ice and wind.Broadly, we can group different landforms depending on elevation and slope as mountains, Plateaus and plains. Weathering, water, elevation, sinking, and erosion of the soil are constantly shaping the surface of the Earth. It doesn’t really happen overnight but takes hundreds and thousands of years for us to notice these changes
INTERNAL FORCES Internal forces, or tectonic forces, are forces from within the Earth that lead to sudden changes on the face of the Earth. The crust of the Earth is actually divided into several pieces which we call plates. These plates float over the liquid molten rock (called magma), which lies below the solid crust.
The core of the Earth heats the molten magma. The molten magma rises upwards when heated, spreads. Cools and then sinks again, to get heated and rise once more. This constant rising and sinking of the magma keeps pushing the plates that rest on it. Thus, the plates are also constantly moving. This movement of the plates is termed plate tectonics.
Internal processes lead to : | |||
| Right Option : C | |||
| View Explanation | |||
The forces which originate from within the Earth's crust or inside the Earth are called ________ forces . | |||
| Right Option : B | |||
| View Explanation | |||
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