When the earth’s surface gets weathered away over time, it is known as:

That would just be called Weathering and Erosion. Erosion happens when rocks and sediments are picked up and moved to another place by ice, water, wind or gravity. Mechanical weathering physically breaks up rock. One example is called frost action or frost shattering. Water gets into cracks and joints in bedrock.

Answerscripps institution of oceanography; i believe this is correct plz check first good luck;