prize9-6, Exercise 1: Weathering, erosion, deposition

Model answer (check the details):

Weathering: breaking down rock in place. Example: water freezes in a crack on a mountain slope and expands, splitting off pieces of rock (freeze-thaw).

Erosion: removal and transport. Example: in its steep upper course the river carries those pieces downstream and grinds the bed, deepening its V-shaped valley.

Deposition: laying down when energy drops. Example: in the lower course, or where the river reaches the sea, the water slows and drops its load, forming floodplain deposits and a delta.

Care: the three overlap, and the same material can go through the cycle many times.