The lesson covers watersheds, river basins, and aquifers, explaining how precipitation is managed both above and below ground. It details how watersheds collect runoff and are defined by ridgelines, and introduces tributaries. The lesson also explains aquifers, their zones, and the water table, emphasizing the importance of permeable rock layers for water storage.

What is the main question addressed in the lesson on watersheds and aquifers?

• What happens to precipitation after it falls?

• How do lakes evaporate?

• How do rivers form?

• Why do mountains have snow?

Which of the following terms are synonymous with 'watershed'?

• Evaporation zone

• Water table

• Aquifer

• River basin

What is the role of gravity in water flow within a watershed?

• It causes water to flow uphill

• It controls water flow downhill

• It has no effect on water flow

• It prevents water from flowing

What separates different watersheds?

• Rivers

• Lakes

• High ridgelines and mountains

• Oceans

What is a tributary?

• A large river

• A small stream flowing into a larger body of water

• A type of aquifer

• A mountain range

What is the process called when water moves below ground?

• Sublimation

• Evaporation

• Percolation and infiltration

• Condensation

What is an aquifer?

• A mountain peak

• A type of cloud

• A surface water body

• An underground layer of permeable rock containing water

What is the unsaturated zone in an aquifer?

• A zone above the water table

• A zone with abundant water

• A zone with some water but not enough for a well

• A zone with no water

What defines the boundary between the unsaturated and saturated zones?

• The ocean floor

• The river basin

• The water table

• The mountain ridge

What is the saturated zone?

• A zone with no water

• A zone with some water

• A zone with enough water for a well

• A zone above the water table