3.2. Core Sampling

Try these first

1. 1.

   What is core sampling?

   Hint

   Think about how you extract a sample while keeping it intact.

2. 2.

   Why is it important to sample sediments at different depths?

   Hint

   Consider how pollution might penetrate into the sediment.

3. 3.

   What is the main purpose of core sampling?

   • To collect surface samples
   • To analyze sediment layering
   • To measure current pollution levels

   Hint

   Think about what we learn from layers below the surface.

4. 4.

   True or False: Core sampling should only focus on the top layer of sediments.

   • True
   • False

   Hint

   Consider whether pollution is uniform across all layers.

5. 5.

   A core sampling project in a river indicates that contaminants rise quickly in the sediment profile. Considering sediment transport dynamics, explain how surface runoff may impact deeper layers over time.

   Hint

   Consider the movement of water and how it disperses contamination in sediments.