WVGSA Grade 8 Science Practice Questions - West Virginia General Summative Assessment Grade 8 Science Exam

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In Appalachian coal mining regions of West Virginia, exposed sulfur-bearing minerals react with rainwater to form acid mine drainage (dilute sulfuric acid), lowering stream pH below 4.0. Which environmental mitigation strategy best neutralizes this stream acidity to protect aquatic ecosystems?

Adding crushed limestone (calcium carbonate, a base) to acid drainage channels to raise water pH toward neutral (7.0) Pouring additional concentrated hydrochloric acid into the streams Diverting more rainwater into contaminated mining channels Covering the stream bed with synthetic plastic sheeting

Correct Answer:

Adding crushed limestone (calcium carbonate, a base) to acid drainage channels to raise water pH toward neutral (7.0)

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