Ocean acidification is a byproduct of increasing atmospheric CO2 levels around the globe, which is also causing climate changes. This global phenomenon can be difficult conceptually for students, but it is easy to model using sensors.
Here’s a quick video using the Wireless CO2 and Wireless pH sensors:
Using a few simple materials, this quickly demonstrates to students what impact gaseous CO2 can have on the pH of water as it dissolves. Ask students to consider the limitations of this model: How does it differ from earth systems? How could the model be improved?
Looking to extend this into a student lab? We’ve got an inquiry lab where students can act as the CO2 sources and monitor pH with a sensor, while learning more about the chemistry behind ocean acidification.
Here are a handout and PowerPoint presentation that have been used when performing this activity as part of a PASCO workshop.