Meanders

On a straight river, the fastest flowing water is...

• at the surface

• to the left

• directly in the middle

• on the outside bend

On a meander, the fastest flowing part of the river is...

• the outside bend

• the inside bend

• the left hand side

• the middle

Why do rivers become wider downstream? (Select all that apply)

• There is more lateral erosion

• Tributaries feed the rivers more water

• There is more space for them to spread out

• They carry more sediment

Which type of erosion is more common in the middle course of a river?

• Vertical

• Lateral

On the outside bend of a meander, what types of erosion cause the river cliff to collapse into the river? (Select all that apply)

• Abrasion

• Attrition

• Solution

• Hydraulic action

What feature is being described here? The inside bank of a meander on a river where sedimentary material is deposited as a result of the slower flow rate

• Overhang

• River cliff

• Slip-off slope

• Meander

When energy levels drop in a river, which type of sediments are deposited first?

• Large, heavy sediments

• Small, very fine sediments

• Sand/silt sediments

• Pebbles and small rocks

When a meander becomes very pronounced, this feature is formed. What is it called?

• U bend

• Horse shoe lake

• Oxbow lake

• An undercut

The arrows in the river indicate where maximum flow of the river is. What concept determines where it goes?

• Inertia/centrifugal force

• Slope

• Gravity

• Friction

What would the river channel look like from B to B'

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