CCEA Geography Theme A - Drainage Basins and systems

Ava is observing how water moves from the surface into the soil in her garden. Which process is she observing?

• Precipitation

• Evaporation

• Infiltration

• Condensation

What is the term for rain, hail, sleet, or snow that enters the drainage basin system?

• Surface runoff

• Evapotranspiration

• Precipitation

• Infiltration

During a geography class, Daniel asked, "What is the beginning or start of a river called?"

• Confluence

• Tributary

• Source

• Mouth

During a geography class, Sophia and Arjun were discussing river systems. Which term describes the point where two rivers or streams join?

• Mouth

• Confluence

• Source

• Tributary

What is the term for the eroded material carried by a river?

• Load

• saltation

• Sediment

• Discharge

Thomas and Ava are observing a heavy rainstorm. Which process involves water moving across the surface of the earth?

• Percolation

• Surface runoff

• Infiltration

• Condensation

What is the term for the downward movement of water from the soil into the rock beneath?

• Percolation

• Infiltration

• Surface runoff

• Evapotranspiration

Why are trees a useful, natural way to reduce the risk of flooding? (Select two from below)

• The trees fall over in heavy rain and stop water reaching the river

• Interception will occur - this means it takes rain much longer to reach the ground (and a river!)

• The rain will reach the ground and river much faster!

• Trees are an important store of precipitation - both on their leaves and stems. This reduces the amount of rain in the soil.

What is the outer boundary of a drainage basin called? (Usually marked by high land)

Deposition is when a ​ (a)   loses ​ (b)   and ​ (c)   its load

• river
• energy
• drops
• floods