River Quiz

Look at the diagram. Letter A represents the:

• delta

• mouth

• source

• riverbed

Look at the diagram. Letter B represents the:

• riverbanks

• source

• delta

• mouth

Look at the diagram. Letter C represents the:

(Hint: It is the bottom of the river.)

• delta

• source

• mouth

• riverbed

Look at the diagram. Letter D represents the:

• delta

• riverbank

• source

• riverbed

Which is an example of erosion?

• A puddle dries in the sun.

• Moving water in a river moves rocks and sediment down stream.

• Plant roots break apart cement steps.

Deltas are formed by:

• glaciers pushing sediment into a pile.

• wind blowing rocks and sand into a river.

• flowing river water carrying sediment and depositing it at the mouth of a river.

Which of the following affects the way rivers erode and deposit sediment?

• type of sediment (hardness or softness)

• amount of water (flood or normal conditions)

• speed of water

• all of the above

Which of the following carries sediment to the mouth of the river and forms a delta?

• river currents

• plants

• water freezing and thawing

• strong wind

How much of the Earth is covered in water?

• 20%

• 50%

• 70%

• 90%

Most of the Earth's water is:

• cold

• fresh water

• salt water