What are the main reservoirs of water at and near Earth’s surface?
How do mountains form rain shadows?
What is an aquifer?
What is the difference between the saturated and unsaturated zones of an aquifer?
How do aquicludes form a confined aquifer?
Why does water from an artesian well flow to Earth’s surface without pumping?
How are recharge and discharge balanced to keep the groundwater table at a constant level?
How does Darcy’s law relate groundwater movement to permeability?
How does groundwater create karst topography?
What are the sources of water in hot springs?
What are some common contaminants in groundwater?
How do microorganisms survive deep in Earth’s crust?