Ocean Acidification Reading Comprehension Article

Informational article on ocean acidification for Year 9 and up, covering the logarithmic pH scale, carbonic acid and bicarbonate chemistry, links to global warming and the effects on calcifying marine organisms.
Year groups
Years 9–11 (Key Stages 3–4)
File type
Multiple File Types

Updated Oct 26, 2026

Subject
Biology, Life Sciences, Science
Topic
Ocean, Acids
Resource types
Worksheets

From the author

About this resource

Ocean Acidification Reading Comprehension This Year 9 and up, self-paced reading comprehension article tackles literacy and science skills. Students will read an informative article about ocean acidification and answer knowledge, thinking, connecting, application, and open-response questions. The resource covers pH values, the relationship between CO2 and pH, global warming, consequences of ocean acidification, and reducing emissions. This engaging scientific reading can introduce a lesson, provide a cover lesson, improve analysis skills, differentiate instruction, or measure literacy abilities. The 3-page article and answer key are fully editable Word, PDF, and Google Drive files that integrate with Google Classroom for both distance learning and in-class. Consider building your scientific literacy resources with additional articles spanning health, Earth science, energy, physics, chemistry, biology, ecology, the environment, and natural disasters.

In the classroom

Teaching tips & learning objectives

Learning objectives

  • Explain the relationship between carbon dioxide and ocean pH

  • Describe the consequences of acidification for organisms that build calcium carbonate shells

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