Question

what do you understand by Canyon in geography

Answer 1

canyon is a deep cleft between cliff resulting from weathering and erosive activity of river over geologic timescales

Answer 2

in its upper course,a river erodes the valley bed more than the sides.the valley thus becomes deep and narrow with steep, wall like sides.such a valley is called gorge.Large gorges are called canyons.the grand canyon of the Colorado river in USA is a famous example of canyons.