Understanding Groundwater and Aquifers

What are the two main sources of water for most people?

• City water and bottled water

• River water and well water

• City water and well water

• Rainwater and bottled water

What does it mean if a material is porous?

• It is solid and impermeable

• It has small spaces or holes for liquid movement

• It is made of sand and gravel

• It has large spaces for air

How can groundwater stored in aquifers be accessed?

• By using a siphon

• By drilling wells

• By digging trenches

• By using a pump

What is a confined aquifer compared to an unconfined aquifer?

• A confined aquifer is only found in deserts

• A confined aquifer is always dry

• A confined aquifer is surrounded by impermeable layers

• A confined aquifer is open to the surface

What is the water table?

• The middle of the aquifer

• The top of the saturated zone

• The bottom of the saturated zone

• The top of the unsaturated zone

What is the capillary fringe?

• A saturated zone held by capillarity

• A zone with no water movement

• A dry zone above the water table

• A zone of rapid water flow

How can the water table be recharged?

• By drilling more wells

• By pouring water into the aquifer

• By adding more sand to the aquifer

• By removing water from the aquifer

What is the role of agricultural recharge?

• To supply water to the surface

• To prevent soil erosion

• To move water beyond crop demand to deeper groundwater

• To increase crop yield

How do streams interact with groundwater?

• They only gain water from groundwater

• They only lose water to groundwater

• They can both gain and lose water to groundwater

• They do not interact with groundwater

Why are wetlands not ideal for groundwater recharge?

• They are too small

• They are too dry

• They are not connected to groundwater

• They are too deep