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7th Grade Science
Ecosystems
14. Energy Flow
14.1 Food Webs, Energy transfer
Food Webs & Energy Transfer: How Energy Flows Through Ecosystems
Discover how energy moves through living systems via food webs, trophic levels, and the 10% rule that governs all ecosystems on Earth.
What You'll Learn
Food webs show complex energy flow between ecosystem organisms.
Producers convert sunlight into energy at the first trophic level.
Only ten percent of energy transfers to each successive trophic level.
Decomposers recycle nutrients, completing the ecosystem energy cycle.
What You'll Practice
1
Students identify producers, consumers, and decomposers in ecosystems.
2
Learners analyze energy loss across different food web trophic levels.
3
Practice questions explore how food web disruptions affect ecosystems.
Why This Matters
Understanding food webs and energy transfer equips students to analyze ecosystem health, explain environmental disruptions, and make informed decisions about conservation and sustainability.
This Unit Includes
Learning resources
Skills
Food Webs
Energy Transfer
Trophic Levels
Ecosystems
Decomposers
NE Curriculum Aligned