Weathering of Limestone

This Weathering of Limestone lesson plan also includes:

We all know limestone weathers, but what affects the rate of weathering? Young scientists investigate the physical and chemical weathering of limestone (chalk) through experimentation. First, they conduct trials with different-size chalk, and then they continue the trial with different acid concentrations.

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Instructional Ideas

  • Have learners graph their data on physical and chemical weathering to visually note relationships
Classroom Considerations

  • The activity uses HCl; be sure to go over safety procedures 
  • Necessary materials include different concentrations of acid, varying water temperatures, and additional equipment
  • The final installment of a five-part series on earth materials and processes

  • Hands-on activity engages learners
  • A comic strip to illustrate fossil formations in limestone promotes pupil interest in the subject matter

  • Some questions refer to localities in Virginia, which may be unfamiliar to pupils in other states