2.
When water turns from a liquid to a gas
3.
The point where the river meets the sea
4.
A type of erosion where rocks knock together and break apart
5.
The movement of sediment along a river
6.
The point where 2 rivers meet
7.
Where water is stored underground
8.
When a waterfall retreats upstream, what's left behind?
9.
When large boulders are rolled along the river's bed
11.
A human cause of flooding, where trees are removed in the valley
12.
A place in Cornwall that flooded in 2004
