Students complete nine fill-in-the-blank problems about energy pyramids, the 10% energy transfer rule, and heat loss at each level. The matching activity pairs producers, primary consumers, secondary consumers, and decomposers with their energy pyramid roles.
Matching each ecosystem role to its energy pyramid position — including explaining why energy decreases and where nutrients return — connects food web vocabulary to the quantitative energy reasoning that distinguishes Grade 5 ecosystems work.
Style:
Ecosystems
Part A: Fill in the Blank
Write the missing word or number on each line.
1. An energy pyramid shows that energy decreases at each level of a food chain.
2. Only about ten percent of energy passes from one level to the next in a food chain.
3. Most energy at each level is lost as heat when organisms use it for daily activities.
4. Producers form the bottom level of every energy pyramid because they hold the most energy.
5. During photosynthesis, plants take in carbon dioxide from the air and water from the soil.
6. Photosynthesis produces glucose for food and releases oxygen into the air.
7. The top of an energy pyramid has the least amount of energy available.
8. Herbivores are on the second level of an energy pyramid just above the producers.
9. Without energy from the Sun, producers could not make food and the entire pyramid would collapse.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Producers
→ Hold the most energy because they capture it directly from sunlight
Eat producers and hold about ten percent of the original energy
Primary consumers
→ Eat producers and hold about ten percent of the original energy
Return nutrients to the soil so producers can grow again
Secondary consumers
→ Hold less energy because they are two steps from the producers
Hold the most energy because they capture it directly from sunlight
Decomposers
→ Return nutrients to the soil so producers can grow again
Hold less energy because they are two steps from the producers
Ecosystems
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) An energy pyramid shows that energy decreases at each level of a food chain.
2) Only about ten percent of energy passes from one level to the next in a food chain.
3) Most energy at each level is lost as heat when organisms use it for daily activities.
4) Producers form the bottom level of every energy pyramid because they hold the most energy.
5) During photosynthesis, plants take in carbon dioxide from the air and water from the soil.
6) Photosynthesis produces glucose for food and releases oxygen into the air.
7) The top of an energy pyramid has the least amount of energy available.
8) Herbivores are on the second level of an energy pyramid just above the producers.
9) Without energy from the Sun, producers could not make food and the entire pyramid would collapse.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
Producers
→ Hold the most energy because they capture it directly from sunlight
Eat producers and hold about ten percent of the original energy
Primary consumers
→ Eat producers and hold about ten percent of the original energy
Return nutrients to the soil so producers can grow again
Secondary consumers
→ Hold less energy because they are two steps from the producers
Hold the most energy because they capture it directly from sunlight
Decomposers
→ Return nutrients to the soil so producers can grow again
Hold less energy because they are two steps from the producers
Ready to Practice?
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10 Questions
10-15 minutes
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