Carbon Cycle Fluxes and Feedbacks is a Grade 10 Science worksheet focused on Earth and Human Activity, helping students trace carbon movement among the atmosphere, terrestrial biosphere, ocean, and lithosphere while examining how sources, sinks, fluxes, and feedbacks influence atmospheric carbon dioxide.

Build Carbon-Cycle Reasoning

Students work with the language and relationships needed to interpret carbon-cycle models rather than simply memorize reservoir names. The resource develops understanding of carbon sources and sinks, carbon fluxes, residence time, ocean uptake, ocean acidification, permafrost thaw, and positive feedback loops. Students connect changes in carbon storage and movement with changes in atmospheric carbon dioxide and climate forcing.

What Students Do

• Respond to a dialogue question about the carbon cycle.
• Pair answers through a matching activity.
• Complete a cloze passage using key carbon-cycle vocabulary and processes.
• Label a carbon-cycle diagram showing movement among major reservoirs.
• Read an informational passage about sources, sinks, ocean uptake, ocean acidification, residence time, and permafrost feedback.
• Answer multiple-choice questions that require interpreting fluxes, identifying cause-and-effect relationships, and applying the lesson concepts.
• Evaluate statements with true-or-false questions.
• Answer short-response questions about sources and sinks, ocean acidification, and permafrost thaw.
• Write an extended response explaining how sources, sinks, and feedback loops can change atmospheric carbon dioxide over time.

Teacher Support Included

• Teacher Guide: A separate PDF with learning objectives, teaching tips, discussion questions, and common mistakes.
• Student worksheet: A varied sequence of reading, vocabulary application, diagram labeling, selected-response assessment, short answers, and extended writing.

Classroom Use

Use this resource as a structured carbon cycle lesson activity, guided practice, independent work, or a review and assessment opportunity. The progression from introductory tasks to reading-based questions and written explanation gives students multiple ways to work with the same scientific ideas. The extended response provides an opportunity to synthesize at least two sources, two sinks, and one feedback loop into an explanation of changing atmospheric carbon dioxide.

The resource fits Grade 10 Science instruction on Earth and Human Activity in an NGSS context and gives students practice interpreting carbon fluxes and feedbacks that connect carbon cycling with climate forcing.