Acids, Bases, and Shell Building Races

Since the Industrial Revolution, the amount of carbon dioxide in the atmosphere has dramatically increased. Approximately 25% of this carbon dioxide is absorbed into the world’s oceans changing its chemistry in a process called ocean acidification. Join PSI biologists as they break down the complexities of ocean acidification. Act out changes in ocean chemistry that can leave oysters racing to snatch up valuable shell building components. Watch a short video, play the pH guessing game, change water pH with dry ice, and test what happens to shells in an acidic environment. Become empowered as we brainstorm ways to address this important issue and then commit to taking positive actions to do so.

Designed for grades 6-12, 60 minutes in length.

Pacific Shellfish Institute