GENERAL GEOLOGY

Detailed explanation-1: -Erosion is an external force that is constantly changing the surface of Earth. Subduction is the physical process in which heavy oceanic plates slide under continental plates. Continental drift is caused by external forces. The amount of water in the water cycle is constantly changing.

Detailed explanation-2: -External forces, such as weathering and erosion, also alter landscapes and in some instances create the soil that is needed for plant life. Weathering refers to physical and chemical processes that change the characteristics of rock on or near the earth’s surface.

Detailed explanation-3: -The action of erosion can create an array of coastal landscape features. For example, erosion can bore holes that form caves. When water breaks through the back of the cave, it can create an arch. The continual pounding of waves can cause the top of the arch to fall, leaving nothing but rock columns called sea stacks.

Detailed explanation-4: -Earth’s surface is constantly changing. Wind, water, and ice break down large rocks and move sediments on the surface. It usually takes years for weathering, erosion, and deposition to cause noticeable changes. Some events, though, change Earth’s surface much more quickly.

Detailed explanation-5: -The wearing away of the earth’s surface is called erosion. Explanation: Erosion is the phenomenon of the removal of the top layer of the Earth’s surface through the action of agents like air, running water and glaciers.