Pyramids of energy and biomass

Construct pyramids of numbers, biomass and energy and calculate the efficiency of energy transfer between trophic levels.

⏱ 19 min❓ 8 questions

What you'll be able to do

✔I can compare pyramids of numbers, biomass and energy and explain why some can be inverted
✔I can calculate the percentage efficiency of energy transfer between trophic levels
✔I can use energy transfer to explain patterns such as the large territories of top predators

How this works

1Read the short explanations first — they teach you what you need before each question.
2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.

What's inside

8 questions and 1 quick teaching card, including:

🔗Match the pairs — Choose the partner that goes with each item.
🔢Number answer — Work out the answer and type the number.

👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.

Curriculum: AC9S9U02