Year 8 Science · Unit 1 · Lesson 22
Foundation Worksheet
Learning Goals
Match each term to its definition
Draw a line connecting each term on the left to its correct definition on the right. Or write the matching letter next to each term.
| Term | Your answer | Definition |
|---|---|---|
| Producer | A. A diagram showing how energy decreases at each feeding level, with the widest base at the bottom. | |
| Primary consumer | B. An organism that makes its own food using sunlight; the starting point of every food chain. | |
| Secondary consumer | C. A network of many interconnected food chains showing all the feeding relationships in an ecosystem. | |
| Trophic level | D. An organism that eats a primary consumer; the third link in a food chain. | |
| Energy pyramid | E. The position an organism holds in a food chain, numbered from producer (level 1) upward. | |
| Food web | F. An organism that eats producers directly; usually a herbivore at trophic level 2. |
Order the steps
The organisms below are all part of the same Australian food chain. Number them from 1 (first, the producer) to 5 (last, the apex predator). Then, on the lines below the table, write out the complete food chain using arrows (→) to show the direction of energy flow.
| Order (1–5) | Organism | Trophic level name |
|---|---|---|
| Frog | ||
| Grasshopper | ||
| Eagle | ||
| Grass | ||
| Snake |
Write out the complete food chain using arrows (→):
Which way does the arrow point, from eaten to eater, or from eater to eaten? Why?
1. A food chain shows: grass → caterpillar → magpie → wedge-tailed eagle. What trophic level is the magpie, and what type of consumer is it?
2. Why does an energy pyramid get narrower toward the top? What happens to the energy that is not passed on?
Wrap Up
In one sentence, what was the main idea of this lesson?