Gravity is not a major influence in the decomposition of a rock, unless the rock
falls off of a cliff.
The main process consists of water seeping into tiny cracks in the rock, then
expanding as it freezes.
Well, if you want to stretch it, I guess you could give gravity the credit for making
the water seep into the cracks.
the process is called weathering when the rocks break down
to break big rocks
Magnetic force does not break down rocks in nature. Rocks are typically broken down by mechanical weathering (e.g. frost wedging, root growth) and chemical weathering (e.g. oxidation, dissolution).
soil
gravity
Weathering can break up rocks on a slope or cliff. Then gravity will then pull the weathered rock down the slope or cliff. Erosion is the moving of weathered rock. Gravity would be moving the weathered rock down the slope or cliff.
The four main agents of erosion that move rocks are water (rivers, rain, waves), wind, ice (glaciers), and gravity. These forces can break down rocks into smaller pieces and transport them to different locations.
Weathering
none
Yes
Erosion is the main force that acts on rocks to break them down into sand. Water getting into cracks, freezing and expanding also helps to break down rocks.
Yes. Temperature changes, water, wind, pressure changes, plant and animal action, and gravity are all agents of physical weathing.