5.1. Definition and Importance of Resuspension

Try these first

1. 1.

   What is resuspension?

   Hint

   Think about what happens to the particles in a muddy river.

2. 2.

   Name a natural event that can increase resuspension.

   Hint

   Consider what happens to rivers when it rains a lot.

3. 3.

   What is the primary cause of sediment resuspension in aquatic environments?

   • Chemical reactions
   • Turbulence in water
   • Biological activities

   Hint

   Think about what happens to sediments during a storm.

4. 4.

   True or False: Larger sediment particles will always remain suspended longer than smaller particles.

   • True
   • False

   Hint

   Consider how particle size affects settling rates.

5. 5.

   Assess the potential impact of resuspension on aquatic life in a scenario where a river flood occurs after a chemical spill in the sediment. How might the concentration of pollutants change throughout the water column?

   Hint

   Consider the cascading effects on organisms at various trophic levels.

6. 6.

   Evaluate options for mitigating resuspension impacts in urban rivers prone to flooding. What strategies can be implemented to protect water quality?

   Hint

   Think about natural features that help slow down water flow.