Hands-on experiments on ocean acidification
What do we do? - Education

 

Learning the main facts about ocean acidification, watching movies, reading scientists' blogs from the Arctic may raise curiosity a lot on this topic - but going further into understanding the phenomena involved gains a lot from actually experimenting these phenomena.

In this perspective EPOCA and CarboSchools joined forces to test and describe hands-on experiments for science teachers interested to illustrate ocean acidification in their classrooms. This page introduces thirteen experiments, generally designed for pupils from 10 to 18 years old, potentially adaptable to any age group within that range as well as for museum presentations:

1) one preliminary experiment to familiarize students with basic knowledge on pH: What is pH?

2) one experiment offering an overview of the main phenomena involved in ocean acidification: "Atmospheric CO2 can produce ocean acidification" - pupils will observe a seawater acidification by introducing CO2 directly on seawater or by increasing CO2 in air above it with a candle. They will also observe that CO2 can pass from seawater to air. Effects on shells can also be observed.

3) Six experiments illustrating the physico-chemical laws which cause ocean acidification: how CO2 travels between the atmosphere and the water, and how temperature and salinity influence this.

CO2 and pH: this experiment shows the influence of the CO2 absorbed by water on its pH.

4) Two experiments addressing the key biological question with OA: what could be the consequences of the decrease of seawater pH for marine organisms?

5) Two additional experiments on the role of plants in the marine carbon cycle:

 

 

 

 This web site is hosted by Observatoire Océanologique de Villefranche sur Mer