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Food Chains and Webs

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Year 7 Science – Food Chains and Food Webs

Learning Intention & Success Criteria

Learning Intention

We are learning to identify producers, consumers and decomposers and explain how energy moves through food chains.

Success Criteria

Identify producers, consumers and decomposers.

Arrange organisms into the correct food chain.

Explain how energy moves through a food chain.

Predict what happens if one organism is removed.

Activity 1 – Vocabulary Match

Match each word with its meaning. Draw a line to match the pairs.
A. Producer
B. Consumer
C. Decomposer
D. Ecosystem
1.
2.
3.
4.
Makes its own food using sunlight
Eats other organisms
Breaks down dead plants and animals
Living things interacting with their environment

Activity 2 & 3 – Build the Food Chain and Label Organisms

Activity 2 – Build the Food Chain

Look at the organisms below and write them in the correct order from first (energy source) to top predator:

🌱 Grass • 🦗 Grasshopper • 🐸 Frog • 🐍 Snake • 🦅 Eagle

Write the organisms in order:

____________ → ____________ → ____________ → ____________ → ____________

Activity 3 – Label the Organisms

For each organism write whether it is a Producer, Consumer or Decomposer.

Grass
Grasshopper
Frog
Snake
Mushroom

Activity 4 & 5 – Short Answers & Think Like a Scientist

Activity 4 – Short Answer

1. Why is the grass called a producer?
2. Why are decomposers important?

Activity 5 – Think Like a Scientist

3. What might happen if all the frogs disappeared from this food chain? Explain two possible effects.

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