Module 7 Water

Front

What is groundwater recharge?

Back

The process by which groundwater is replenished, occurring naturally through infiltration.

Front

Define water table.

Back

The top of the saturated zone in an aquifer.

Front

Which soil type has the greatest permeability?

Back

Sand, with a permeability rate of 0.02 cm.

Front

What causes saltwater intrusion in coastal wells?

Back

Overpumping of groundwater reduces pressure in freshwater aquifers, allowing seawater to move in.

Front

What is subsidence?

Back

The sinking of land above an aquifer when water no longer fills the pores.

Front

What is an aquifer?

Back

A geological formation that can store and transmit water.

Front

Explain the term 'permeability' in relation to soil.

Back

Permeability is the ability of soil to transmit water through its pores.

Front

What is the saturated zone?

Back

The area in an aquifer where all the pores are filled with water.

Front

What is the unsaturated zone?

Back

The area above the water table where soil pores contain both air and water.

Front

How does overpumping affect groundwater levels?

Back

It lowers the water table and can lead to land subsidence.