Ontario K–8 curriculum · Glossary

aquifer

Definition

An aquifer is an underground layer of rock or soil that holds groundwater, like a natural sponge.

Many towns get their drinking water by pumping it up from an aquifer through a well.

How to teach this in 30 seconds

Try this analogy: An aquifer is like a giant, natural sponge made of rock and sand, soaked with water and hidden underground.

Ask your child: Where do you think the water that comes out of a well comes from?

Common mix-up: Many people picture an aquifer as a huge underground lake. It's actually more like a layer of wet sand and gravel, with water filling the tiny spaces between the particles.

Examples

  • Rainwater soaking into the ground can slowly refill an aquifer over many years.
  • The Oak Ridges Moraine in Ontario contains aquifers that provide drinking water to many communities.
  • Geysers and natural springs are often places where water from an aquifer comes to the surface.

aquifer is a term used in Ontario’s Kindergarten to Grade 8 curriculum.

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