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Year 9 - Geography

Antarctic food webs

Ice and glaciers: How are cold places affected by a warming planet?

Unit Summary

This unit teaches pupils about the physical processes that influence cold places around the world and how areas of ice have changed over time due to climatic variations. Pupils will learn about the impact of global warming on glaciated areas and what this means for the future of our planet.

Lesson Summary

You will learn to describe what food webs are and explain how Antarctic food webs work.

Key Notes

  • Food webs display the transfers of energy within one location.
  • Antarctic food webs contain phytoplankton (producers), krill and squid (consumers) and leopard seals (apex predators).
  • Changes to food webs arising from overfishing can affect different species.
  • The Ross Sea Marine Park Area has been established to help protect young fish.

Vocabulary To Learn

  • producer: an organism that makes its own food using sunlight
  • consumer: an organism that eats other organisms for energy
  • apex predator: an organism at the top of the food chain, with no natural enemies

Common Mistakes To Avoid

  • A food web is linear.

3 Quick Questions (With Answers)

1. Explain this geography topic using two clear key points.

Food webs display the transfers of energy within one location. Antarctic food webs contain phytoplankton (producers), krill and squid (consumers) and leopard seals (apex predators).

2. Define this geography term and use it in an example. 'producer'

an organism that makes its own food using sunlight.

3. Correct this common geography misunderstanding.

Mistake: A food web is linear. Correction: A food web is not linear, it is complex and interconnected.

More Lessons In This Unit

Browse all guides in the Year 9 Geography guide library.