Lava cools down and accumulates into rock as it reaches Earth's surface
Weathering and erosion.
Erosion
The process by which material is worn away is called erosion. Erosion is typically caused by natural forces such as wind, water, and ice, as well as by human activities that disturb the land surface. Over time, erosion can reshape landscapes and alter the Earth's surface.
surface erosion-the process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc.
denudation forces including mass wasting, weathering, and erosion
Lava cools down and accumulates into rock as it reaches Earth's surface
Weathering is the process by which rocks and other materials on the Earth's surface are broken down and worn away by various natural forces such as wind, water, and temperature changes.
Weathering!
Because people have been far down and we have special tools to see down into the earth.
the moon break down
Infilitration
Erosion
Subsidence.
Groundwater.
Weathering and erosion.
if you mean ravine, it is a deep narrow valley or gorge in the earth's surface worn by running water.