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Ocean Acidification

Burning fossil fuels releases carbon dioxide into Earth’s atmosphere. This not only leads to a warmer Earth (i.e., global warming, the greenhouse effect), but also changes the chemistry of Earth’s oceans. The ocean is a “carbon sink,” which means that it removes CO2 from the atmosphere. The ocean currently absorbs about one-third of the CO2 released by the burning of fossil fuels. However, beyond a certain level of atmospheric CO2, the ocean can no longer act as a carbon sink without it having a negative impact on marine life. When CO2 dissolves in seawater, it leads to decreased pH levels.

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Teacher's Guide: Understanding Ocean Acidification
Teacher's Guide: Understanding Ocean Acidification hot! Tooltip
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Date added: 04/14/2011

This curriculum incorporates a scaled approach to learning. Each module offers activities at five different levels of student interaction, sometimes referred to as Entry, Adoption, Adaptation, Interactivity, and Invention. The early levels are very directed and teacher-driven, which provides important first steps when learning something new. The levels of Adaptation through Invention are more student-directed and open up opportunities to design lessons featuring student inquiry.
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Individual Activities
Individual Activities
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