All the land that drains into the river, either directly or through its tributaries

True or False:

The steepest part of the rivers course is near the source.

True or False:

The river is narrower and deeper near the mouth.

True or False:

Most lateral erosion occurs near the source.

True or False:

Material (stones / pebbles) are larger and more angular near the source.

What is the name given to a river that flows into a main river?

In the UK, most waterfalls are found in... (select all that apply)

Boulder

ledge

canyon

When a waterfall recedes what feature is left behind?

What two inputs do you need for waterfalls to form?

A flood that occurs within a few hour (usually less than 6) from heavy rainfall

Sometimes referred to as a tidal wave-these waves are produced by earthquakes or volcanic activity

An overflow of water beyond the normal amount, usually over dry land

An area that is regularly wet and has vegetation that is adapted for life in the wet soil conditions

What of these is a human cause of flooding?

What of these is a physical cause of flooding?

Human factors increasing flood risk are:

Select two

How is a waterfall formed?