Quizzes, tests, labs, and assignments offer the opportunity to apply what you know and to evaluate what topics you need to study further. They are tools that your teacher uses to evaluate and document what you have learned, and to identify misconceptions and important gaps in your knowledge, which can be addressed by additional teaching.
As practice to test your knowledge about groundwater, take the U.S. Geological Survey Water Science School Groundwater Quiz, How much do you know about the water below your feet?
NOTE: Teachers, remember to address misconceptions and reteach concepts as necessary.