Sedimentation of Mud - Observation and Analysis

Scott Brande, UAB


Summary

The process of mud settling in a graduated cylinder was filmed as a time lapse series over about 2 hours. Students observe and analyze the sedimentation process.

Used this activity? Share your experiences and modifications

Context

Audience

Used in introductory physical geology undergraduate course for non-majors.

Skills and concepts that students must have mastered

none

How the activity is situated in the course

Used as an in-class video tutorial. Takes about 5-7 minutes. Purposes include introduction and reinforcement of cognitive skills, including observation, interpretation, analysis, and short answer response. May be used for individual or group responses, and for formative assessment.

Goals

Content/concepts goals for this activity

  • observation of the sedimentation process of mud-sized particles
  • description amount of time of formation of sedimentary deposit
  • may be starting point for exploring implications of sedimentation in formation of beds, burial of organisms, preservation of sedimentary structures.

Higher order thinking skills goals for this activity

  • entire range of Bloom's taxonomy: from observation to analysis, evaluation, synthesis, as applied to formation of sedimentary deposits

Other skills goals for this activity

  • may be used for collection of written responses
  • record of think-pair-share
  • formative assessment

Description and Teaching Materials

Students watch 57 second online video of time lapse movie of mud-sized sediment settling to form a sedimentary deposit. Students observe process of sedimentation, analyze dynamic change in water transparency, formation of sedimentary bed. Students record observations, discuss interpretations, and record analysis on form for assessment.

Assessment

Response form contains student written observations and analysis. Completed form is subjectively assessed against instructor's individual goals