10 Questions
What percentage of Earth's liquid freshwater is made up of groundwater?
Most of Earth's liquid freshwater is made up of groundwater.
How does water get underground?
Water gets underground when it precipitates, like with rain or snow, and the ground soaks up the falling water.
What type of soil is good at absorbing groundwater?
Sand is good at absorbing groundwater.
What is the region called where the soil is not saturated with water?
The region where the soil is not saturated with water is called the unsaturated zone.
Where is much of the world's groundwater stored?
Much of the world's groundwater is stored in underground water reservoirs called aquifers.
What is an aquifer?
An aquifer is a large underground layer of rock or sediment that holds water.
What is the Ogallala Aquifer?
The Ogallala Aquifer is one of the world's largest aquifers, located in the Great Plains of the U.S.
How do geysers form?
Geysers form when underground water is heated by magma, causing pressure to build up and escape at the surface.
Why do natural ecosystems depend on groundwater?
Natural ecosystems depend on groundwater because it provides a source of freshwater for surface water systems, plants, and animals.
What are sinkholes and how are they formed?
Sinkholes are funnel-shaped cavities in the ground that occur when groundwater is removed, causing the land to sink downward and fill the empty space.
Test your knowledge about groundwater and its importance in Earth's freshwater supply. Learn about the processes that contribute to the formation and movement of groundwater, and discover fascinating facts about its significance in our planet's hydrological cycle.
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