Unit 5.4 - Geo

How does a river change the land?

• the pressure flattens everything

• it picks things up in one place and drops them in another

• it allows trees to grow taller

• the water is absorbed equally across the channel in most rivers

Which is not one of 'the three main' river processes

• striations

• deposition

• erosion

• transportation

Which is not a process of river erosion?

• abrasion

• hydraulic action

• attrition

• sediment

During erosion, how do soluble minerals get into the river?

• dissolving in the water

• the biggest stones are deposited first

• rocks and stones bang together

• water gets forced into cracks in the river bank

Rocks, stones and sand in the water scrape the river bed and banks and wear them away.

• hydraulic action

• soluble

• attrition

• abrasion

The rocks and stones bang together and knock bits off each other.

• suspension

• abrasion

• attrition

• solution

In a fast-flowing river, water is forced into cracks in the bank. Over time this breaks the bank up.

• solution

• hydraulic action

• attrition

• abrasion

What is the name for material that is transported in the river?

• load

• sediment

• till

• deposits

Pick the part of the load that travels at the bottom of the river.

• sediment

• suspension

• solution

• bedload

Small light particles of rock and soil are carried along in a __________. They make the water look cloudy.

• bedload

• solution

• suspension

• sediment