Does the Sun send matter to an ecosystem?

No. The Sun sends energy to a marsh, but it sends no matter. Matter and stored chemical energy move together when one organism eats another.

How much energy passes to the next level?

The salt marsh sheet gives a sample energy budget, and students find the percent passed on at each level.

7th Grade Food Webs and Matter Cycles Worksheets

Ages 12-13 · Free previews · Print-ready PDFs

Written by Adi Ackerman, Head Teacher

A food web shows how matter and energy move among the organisms in an ecosystem. There are 2 sheets for 7th grade here, each with an answer key. Sea Star Loss and the Kelp Forest Chain compares two food webs before and after sea star wasting disease, and Track Matter and Energy Through a Salt Marsh marks arrows as energy, matter or both and finds the percent of energy passed on. The sheets practice MS-LS2-3 and MS-LS2-4.

7th Grade Science Ecosystems Food webs and matter cycles Clear All

Sea Star Loss and the Kelp Forest Chain

Grade7th Grade

TopicEcosystems

Track Matter and Energy Through a Salt Marsh

Grade7th Grade

TopicEcosystems

More ecosystems worksheets

Explore all of our 7th grade ecosystems worksheets, covering biomes and biodiversity, food webs and matter cycles, populations and invasive species, symbiosis and predators.

Biomes and biodiversity Populations and invasive species Symbiosis and predators

Frequently Asked Questions

On the kelp sheet, sunflower stars fell by more than 90 percent, urchins multiplied and kelp forests shrank.

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