Energy Flow in Ecosystems
Explore the concepts of energy flow, food chains, food webs, and trophic levels in ecosystems with this Grade 8 Science worksheet.
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Energy Flow in Ecosystems
Name:
Date:
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Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. Which of the following organisms are producers in most ecosystems?
Animals
Fungi
Plants
Bacteria
2. What is the primary source of energy for almost all ecosystems on Earth?
Geothermal vents
The Sun
Chemical reactions
Decomposition
3. The process by which producers convert light energy into chemical energy is called .
4. Organisms that obtain energy by consuming other organisms are known as .
5. Explain the difference between a food chain and a food web.
6. Observe the food web below. Identify one producer, one primary consumer, and one secondary consumer.
Producer:
Primary Consumer:
Secondary Consumer:
7. Energy flows in only one direction through an ecosystem.
True
False