40. Is a natural water source where there is a big slope
between a mountain area and a flat area. When it
suddently rains a lot, water flows through the
mountain and leaves sediments in the flat part.
41.
42. Is a mass of glacial ice with more than
50,000 square kilometres
43.
44.
45. A cirque glacial is formed in a cirque, a
bowl-shaped depresion on the side of
the near mountains.
46. Is a a steep-sided valley cause by
glacial erosion.
47. Is a thin, almost knife-like,
ridge of rock which is
typically formed when
two glaciers erode
parallel U-shaped valleys
48.
49.
50.
51.
52. The size of coastal dunes depend on the
complex interaction between controlling
winds and sediments supply.