2006-10-12 16:11:32 · 6 answers · asked by melo1819 2 in Science & Mathematics ➔ Earth Sciences & Geology
Wearing by tumbling down the rivers , the farther from the Mountains the smoother and rounder they become. Also wave action being pounded on the shorelines does this.
2006-10-12 16:15:24 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The short answer: Nature preferentially erodes rocks into a spherical shape.
The longer answer: Sharp edges are more susceptible to erosion, because they can be "attacked" from several different angles.
Imagine a rock shaped like a cube. Each of the cube's "points" can be eroded from three different sides. However, the *center* of each face can only be eroded from one side, that which is facing outward. This erodes the points much more quickly than the center faces, rendering a previously cubical rock roughly spherical.
2006-10-13 17:15:19 · answer #2 · answered by heraclius@sbcglobal.net 3 · 0⤊ 0⤋
thats how there formed rocks are formed in diffrent ways being made in a volcanic iruption is diffrent from a rock being formed bye a ocean pushing down the layer of rock.
2006-10-13 18:25:33 · answer #3 · answered by irma 3 · 0⤊ 0⤋
Erosion. Movement by water, gravity, wind.
2006-10-12 23:37:49 · answer #4 · answered by Answergirl 5 · 0⤊ 0⤋
because of the erosion, particularly wind erosion.
2006-10-13 06:39:49 · answer #5 · answered by maran 2 · 0⤊ 0⤋
erosion
2006-10-13 06:04:32 · answer #6 · answered by Anonymous · 0⤊ 0⤋