2.1. Mechanisms of Release

Try these first

1. 1.

   What is diffusion?

   Hint

   Think about how smells spread in a room.

2. 2.

   When does resuspension occur?

   Hint

   Consider scenarios like waves or stirring.

3. 3.

   What is the primary process by which chemicals move within sediments?

   • Evaporation
   • Diffusion
   • Condensation

   Hint

   Recall how substances spread in liquids.

4. 4.

   True or False: Resuspension can lead to increased turbidity in water.

   • True
   • False

   Hint

   Think about muddy waters in rivers after a storm.

5. 5.

   Propose a model for estimating the combined effects of bioturbation and diffusion on contaminant transport. Explain factors to consider and potential equations.

   Hint

   Think about how each factor influences movement within the sediment.

6. 6.

   Design an experiment to measure the impact of resuspension on water quality in a lake. What parameters would you monitor?

   Hint

   Consider how changes in these parameters would reflect the health of the aquatic ecosystem.