Year 8 Carding Mill Valley Trip
The National Trust described Year 8 students as “excellent” during their field visit to Carding Mill Valley.
They saw examples of erosion, transportation and deposition (rock cycle) and took measurements like stream depth and water speed to show how deposition affects water flow at different sites in the valley. Students also examined river bedload, measured and graded rocks, observing how they become more rounded (eroded) as they are transported longer distances. Next they sampled freshwater invertebrates and learnt a new Biology technique, the “kick test”. Students used a classification key to identify their catch. After looking up their scientific names, students examined the invertebrates under microscopes, sketched them and identified adaptations to living in fast flowing freshwater. Finally students were able to act as environmental scientists by scoring the invertebrates with a biotic index to indicate water pollution – luckily group discussion revealed the water was nice and clean! The grand finale involved a guided walk with lots of Science, Geography and History. One group even made it up beyond Light Spout Water fall to the source of the river and learnt that the rare plants (mosses and liverworts) in the surrounding boggy flushes are the reason Carding Mill Valley is classed as a Biological Site of Special Scientific Interest (SSSI).
A big thank you to our students for representing our school so well and to our adult helpers without whom this trip would not have been possible.