Grade 3 · Science · Life science

3rd Grade Food Chains and Ecosystems worksheets

6 printable versionsBuilding ConfidenceAbout 8 minutes eachFree · no account

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Food Chains and Ecosystems

Grade 3 Science Worksheet - Building Confidence

NameDate

Circle the answer.

1.
In the chain grass → rabbit → hawk, which is the producer?
- hawk
- rabbit
- grass
2.
Which food chain is in the right order?
- caterpillar → leaves → bird
- leaves → caterpillar → bird
- bird → caterpillar → leaves
3.
What does a plant use to make its own food?
- sunlight
- other animals
- dead leaves
4.
Mushrooms grow on a fallen log and break it down. What role do the mushrooms have?
- producer
- decomposer
- predator
5.
In algae → snail → fish, what does the snail eat?
- sunlight
- algae
- fish
6.
What do the arrows in a food chain show?
- which animal is fastest
- which animal is biggest
- which way the energy moves
7.
In seeds → mouse → owl, which animal is the predator?
- seeds
- owl
- mouse
8.
Which living thing is a consumer?
- a patch of grass
- a deer
- an oak tree
9.
A frog lives in a pond and eats insects. Why does the frog need the pond habitat?
- it keeps the frog dry all day
- it gives the frog food and water
- it gives the frog fur to stay warm
10.
Worms eat dead leaves in the soil. What do they put back into the soil?
- seeds for new trees
- sunlight for plants
- nutrients for plants

3rd Grade Food Chains and Ecosystems worksheet 1 – printable PDF — Download PDF: 1 2 3 4 5 6

About this worksheet

Food chains and ecosystems show how energy moves from plants to animals and decomposers, and how a habitat change affects the living things in it helps third graders connect observations with scientific explanations instead of memorizing isolated facts. Students may read arrows as decoration or start with a predator instead of the producer that captures energy first. This worksheet uses short evidence-based situations so students must read the setup, identify the pattern, and choose the answer that fits the science idea named in the title. Students order food chains, identify producers, consumers and decomposers, and predict what happens to populations when a habitat or food source changes.

Support versions use familiar examples and direct wording. Standard and challenge versions add closer distractors and require more comparison. Encourage your child to point to the evidence in the prompt before choosing an answer. If the answer does not explain the observation or solve the stated problem, it is probably a distractor. That habit builds careful science reasoning and prepares students for longer investigations.