As a high school or undergraduate Chemistry, Environmental Sciences, or Earth Sciences teacher, you can use this set of computer-based tools to teach about buffers, how buffers work (buffer action), ocean carbonate buffering, and ocean acidification due to higher levels of atmospheric carbon dioxide (CO2).
Video Tutorial : How to use this Lesson Plan
Please note, the first 3 min 52 sec of the video introduce how to use TROP ICSU resources followed by description of this Lesson Plan.
This lesson plan introduces the topic of buffers and describes carbonate buffering in the ocean when atmospheric CO2 dissolves in seawater. The buffering capacity of the ocean is, however, limited, and therefore, higher concentrations of dissolved CO2 can lead to ocean acidification. Students will use a computer-based activity/model to explore how higher atmospheric CO2 levels (resulting in an increase in dissolved CO2) can lead to ocean acidification. Thus, the use of this lesson plan allows you to integrate the teaching of a climate science topic with a core topic in Chemistry, Environmental Sciences, or Earth Sciences.
Lesson plan based on an idea submitted by Dr. Pragya Gahlot, Sri Venkateswara College (University of Delhi), India.
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About Lesson Plan
|Grade Level||High school, Undergraduate|
|Topic(s) in Discipline||
|This reading introduces the topic of buffers and explains the chemistry of buffer action in solution through examples.
Go to the reading
|This video micro-lecture explains carbonate buffering in the ocean. It also briefly discusses the change in the chemical composition of the ocean caused by a higher concentration of dissolved CO2, and the resulting effect on ocean biota.
Go to the video
|This visualization allows students to explore changes in the pH levels of oceans for different levels of atmospheric CO2, including the CO2 levels corresponding to various emission scenarios (as published by the Intergovernmental Panel on Climate Change (IPCC)).
Go to the Visualisation
Use this lesson plan to help your students find answers to:.
- What are buffers? Explain buffer action.
- Describe carbonate buffering in the ocean.
- What is ocean acidification?
- Discuss the possible global impact of higher levels of atmospheric CO2 on the pH of oceans.Describe carbonate buffering in the ocean.What is ocean acidification?
Here is a step-by-step guide to using this lesson plan in the classroom/laboratory. We have suggested these steps as a possible plan of action. You may customize the lesson plan according to your preferences and requirements.
|1||Introduce the topic with the help of a reading||
|2||Play a video micro-lecture to explain the buffer chemistry of oceans||
|3||Play a video micro-lecture to explain the buffer chemistry of oceans||
Note: Detailed information about RCP projections is available in the same tab. Detailed information about SRES projections is available here.