Water beacause water shapes lanscape from erosion If you want to be a real smart-alec you could say lava instead.
The mutual forces of gravitational attraction between a glacier and the Earth cause the glacier to slowly 'flow' downhill. Also, if any of the ice should melt underneath the glacier, then the resulting liquid water flows similarly downhill, although faster than the ice does.
A liquid has a certain volume, flows, and assumes the shape of it's container.
It is Slope , Volume of flows , and Streamed Shape.
Well it depends on how bad the lava flow is. If the lava is flowing slow then the shape of the volcano won't change much, But if it flows with force then bits of the volcano will fall off and change the shape of the volcano. Hope this answer helps!!
Contour lines point uphill when they cross a stream due to the topographic representation of elevation. As water flows downhill, the contour lines indicate changes in elevation; when they intersect a stream, they form a V shape that points upstream. This orientation shows that the higher land lies in the direction of the point of the "V," indicating that the elevation increases as you move away from the stream. Thus, the V shape helps visualize the relationship between the stream and the surrounding terrain.
Gas
Water has no shape, it is a liquid. By gravity it naturally fills any space of any shape that it flows into.
Gas
A substance that flows is called "liquid".
Glaciers form in a U shape due to the process of glaciation, where ice flows downhill under the influence of gravity. As the glacier moves, it erodes the valley walls and floor, widening and deepening the valley. The characteristic U shape results from this erosional process, contrasting with the V-shaped valleys formed by river erosion. Additionally, the weight of the ice concentrates erosion at the valley bottom, further enhancing the U-shaped profile.
A fluid. A fluid [can be liquid or gas] flows to adopt the shape of whatever contains it.
A glacier valley typically has a U-shape, with steep sides and a flat bottom. This shape is the result of the erosion and scouring action of the glacier as it moves downhill, carving out the landscape over time.