Gravity:

Vocabulary: erosion, deposition, slump, creep

Erosion and Deposition:

Evidence of erosion
Signs of erosion may often be seen in a river. Look for one or more of these signs:

· Exposed tree roots.

· Cracks in the soil in a river bank.

· Clumps of grass in the river.

· The top part of the river bank overhangs.

· Brown or coloured water.

· Collapsed river bank.

The photo above shows six examples of erosion.

Types of deposition
There can be much evidence of deposition in a river. Some examples are:

1. Areas of pebbles and stones.
2. Areas where mud and sand and silt have been deposited.
3. Large boulders and stones in the middle of a river.
4. Tree branches and trees in the river.
5. Pollution like cans, bottles, crisp wrappers and other rubbish.

Slump:

Creep

Rockslides

Mudflows: