Groundwater Concepts and Issues

This video provides a review of groundwater, covering topics such as infiltration, groundwater zones, methods to access groundwater, and threats to groundwater. It explains the process of infiltration, the characteristics of unsaturated and saturated zones, and how groundwater can be accessed through springs, aquifers, and wells. The video also highlights threats to groundwater, including overdrawing, pollution, and saltwater intrusion.

What is the main topic of the video?

• Ocean currents

• Atmospheric water

• Groundwater

• Surface water

Which factor does NOT affect infiltration?

• Wind speed

• Precipitation

• Soil characteristics

• Land cover

What happens when soil is fully saturated?

• Evaporation stops

• Runoff decreases

• Infiltration increases

• Runoff increases

What is the unsaturated zone?

• A zone with only air

• A zone with 100% water-filled pores

• A zone with no water

• A zone with less than 100% water-filled pores

What is the top of the saturated zone called?

• Aquifer

• Water table

• Spring

• Confining layer

How does groundwater flow?

• From high to low pressure

• Only uphill

• Only downhill

• From low to high pressure

What is an aquifer?

• A type of vegetation

• A type of soil

• An underground layer of water-bearing rock

• A surface water body

What is a confined aquifer?

• An aquifer with no water

• An aquifer with no rock

• An aquifer with a permeable top layer

• An aquifer with an impermeable top layer

What is a major threat to groundwater?

• Decreased vegetation

• Increased rainfall

• Overdrawing

• Increased slope

Where does saltwater intrusion typically occur?

• Inland areas

• In deserts

• Near the coast

• In mountainous regions