It is known as a waterfall if the fall is down cliffs. If it is a series of shallow waterfalls tumbling over boulders, it is known as cataracts or rapids.
Erosion.
This process is an example of mechanical weathering, where rocks are physically broken down into smaller pieces by forces like water movement and abrasion.
Mechanical weathering (in this case, attrition) during erosion by water.
When you roll on the ground, as in "tumble down the hill."
The sea softens up the rocks and the rocks break up and fall down to the ground.
This is called a rockfall or landslide and it can be triggered by heavy rainfall, earthquakes, or human activities like mining or construction. The force of gravity pulls the rocks and soil downhill, causing them to slide or tumble down the slope.
Sand is deposited on beaches by a variety of natural processes, including erosion of rocks and cliffs, wave action breaking down rocks into smaller particles, and rivers and streams carrying sediments to the coastline. These sediments are then moved along the coast by longshore drift and deposited on beaches when the energy of the waves decreases.
A river bed or stream, or even the ocean if they make it that far. Some geologists use a tumbler to tumble rocks and wear them into a nice shape.
You can, it means to fall helplessly down
You had quite a tumble there.She tumbled down the hill.Jack fell down and broke his crown, and Jill came tumbling after.
The type of erosion that causes weathered cliffs is typically a combination of mechanical weathering (breaking down of rocks through physical processes like freeze-thaw cycles and abrasion) and chemical weathering (breaking down of rocks through chemical reactions with water and air). Over time, these processes weaken the rock and lead to the formation of cliffs.
Weathering breaks materialn down and erosion transports that broken down material. As an example, weathering breaks a mountain down into smaller rocks, and those smaller rocks can be transported by streams (erosion), but the streams cannot simply move the whole mountain.