Science Curriculum Preview Committee Clarification of Learning Results

Revised 04/07/04

5-8

F7: Demonstrate factors controlling the flow of groundwater.

Organizing Questions

  • Demonstrate the movement of groundwater.
  • Compare the porosity and permeability of different aquifer types.
  • Diagram or model how springs, geysers, wells, or artesian wells work.
  • Demonstrate how pollutants enter and move thorugh grondwater resources.
Elaboration

Specific Ideas
  • The idea of systems provides a framework in which students can investigate the four major interacting components of the earth system - geosphere, hydrosphere, atmospshere, and biosphere. In the holistic approach to studying the planet, physical, chemical, and biological processes act within and among the four components on a wide range of time scales to change con tinually earth's crust, oceans, atmopshere, and living systems. NSES pgs. 158-159
  • The cycling of water in an out of the atmosphere [includes] … falling again to the surface, where it colelxcts in rivers, lakes, and porous layers of rock. SFAA p. 43
  • Water is a solvent. As it passes through the water cycle it dissolves minerals and gases and carries them to the oceans. NSES p. 160 D1g.
  • The cycling of water in and out of the atmosphere plays an important role in determining climatic patterns. Water evaporates from the surface of the earth, rises and cools, condenses into rain or snow, and falls again to the surface. The water falling on land collects in rivers and lakes, soil, and porous layers of rock, and much of it flows back into the ocean. Benchmark 4B7
  • Fresh water, limited in supply, is essential for life and also for most industrial processes. Rivers, lakes, and groundwater can be depleted or polluted, becoming unavailable or unsuitable for life. Benchmarks 4B8
  • This ground water, which is a major source [of fresh water] for many people, takes a long time to accumulate in the quantities now being used. In some places it is being depleted at a very rapid rate. SFAA p. 44
  • The benefits of the earth's resources--such as fresh water, air, soil, and trees--can be reduced by using them wastefully or by deliberately or inadvertently destroying them. The atmosphere and the oceans have a limited capacity to absorb wastes and recycle materials naturally. Cleaning up polluted air, water, or soil or restoring depleted soil, forests, or fishing grounds can be very difficult and costly. Benchmarks 4B11
Developmental & Instructional Implications

This indicator is a good opportunity for a lab-based assessment, in which students demonstrate the factors.

[Regarding the dissolving of sugar in water] the majority of students in a sample of 500 between the ages of 5 and 17 depicted bits of sugar without drawing the water. Driver p. 101

Examples

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