The video tutorial explains the concept of groundwater, its interaction with soil and bedrock, and the formation of zones of ation and saturation. It discusses the water table's variability and the role of aquifers in storing groundwater. The tutorial also covers how aquifers are recharged and the importance of recharge zones.

What percentage of the Earth's fresh water is made up by groundwater?

• 10%

• 22%

• 50%

• 35%

What happens to water that does not stay in the soil near the surface?

• It forms surface runoff

• It evaporates into the atmosphere

• It is absorbed by plant roots

• It continues to move downward due to gravity

Which type of rock allows water to pass through it?

• Impermeable rock

• Permeable rock

• Igneous rock

• Sedimentary rock

Why is studying groundwater and rock layers complex?

• Due to the presence of mixed permeable and impermeable layers

• Because all rocks are impermeable

• Because groundwater does not move

• Due to the uniformity of rock layers

What is the zone of aeration?

• A layer where spaces are filled with air

• A layer of impermeable rock

• A layer of bedrock

• A layer where all spaces are filled with water

What is the upper limit of the zone of saturation called?

• Recharge zone

• Bedrock

• Aquifer

• Water table

How does the water table change with seasons?

• It only changes in desert areas

• It remains constant throughout the year

• It rises during dry seasons and falls during wet seasons

• It rises during wet seasons and falls during dry seasons

What is an aquifer?

• A surface water body

• A layer of soil above the bedrock

• A type of impermeable rock

• A network of pores in permeable rock storing water

How are aquifers recharged?

• By condensation

• By water flowing from rivers

• By surface runoff sinking into the ground

• By evaporation

What is the role of recharge zones?

• They are areas where water evaporates

• They are impermeable layers blocking water flow

• They are areas where aquifers are refilled

• They prevent water from entering aquifers