Figure 13.25: An old-fashioned well that uses a bucket drawn up by hand. ( 18 )ground.Review Questions
- What is groundwater?
- What is the water table?
- What are aquifers and why are they so important?
- Replenishing an aquifer is important because it makes the aquifer a resource that can
last a long time. What do you think are ways to keep the amount of water used and
the amount of water replenished the same? - Earthquakes can often change the frequency of eruptions or the amount of water re-
leased by geysers. Why do you think this is so? - Why can hot springs be dangerous?
- How does a well work?
- Groundwater is invisible to people on the surface of the Earth. Explain one way that
you might monitor how humans are affecting the amount of groundwater in an aquifer.
Further Reading / Supplemental Links
- InsideYellowstonehttp://www.nps.gov/archive/yell/insideyellowstone/0017oldfaithful3.
htm - Earth’s water distribution video, University of Waikato, New Zealandhttp://www.
sciencelearn.org.nz/contexts/h2o_on_the_go/sci_media/video/earth_swater