Activity

Ocean acidification and eggshells

In this activity, students observe how chicken eggs can be used to simulate the potential effects of increasing ocean acidity on marine animals with calcium carbonate shells or skeletons, for example, bryozoans and cockles.

Ocean acidification

Our oceans are absorbing about one-third of the carbon dioxide in the atmosphere. As a result, they are becoming more acidic.

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By the end of this activity, students should be able to:

  • understand about ocean acidification and the possible impacts on shelled marine animals

  • conduct an experiment that tests the effects of solutions of varying pH on eggshells.

Download the Word file (see link below) for:

  • introduction/background notes

  • what you need

  • what to do

  • discussion questions

  • extension ideas.

Related content

Associate Professor Abby Smith is passionate about bryozoans and talks about how she is using this tiny marine organism to help monitor the impacts of ocean acidification.

Published: 12 October 2009,Updated: 12 October 2009