Soil with plant and remains

Earth worm

Sparrow

Sparrow hawk

Producer

predator

consumer

Top predator

Food chains LO: draw food chains/webs and explain how energy is lost at each level of a food chain

TASK: can you re arrange this information into a food chain starting with a producer

Mr Gaynor

compost

Make a food chain

Mr Gaynor

compost

• Pond food chain

• Food chain song

Producers

• Green plants make their own food using carbon dioxide and water in the presence of sunlight. Light energy is converted to chemical energy in the process.

Consumers obtain their energy and nutrients from other organisms on

which they feed.

plants

primary consumer

secondary consumer

tertiary

consumer

Each stage in a food chain is called a trophic level.

->Passes out of body as faeces and other excretory products

How Is This Energy Lost?

->Lost as heat during respiration

Total energy level decreases progressively along the food chain.

Times Media CD

Write down the longest food chain you can see in this food web

1. Here are three food chains:• A grass rabbit fox• B wheat field mouse fox• C wheat field mouse grass snake1 Sketch a pyramid of numbers for food chain A.2 Use all three food chains to draw a food web.3 Name one producer in the food web. 4 Name a primary consumer. 5 Name a secondary consumer. a If the field mice died, what would happen to the

number of grass snakes?b Why would this happen?c If the field mice died, what might happen to the

number of rabbits?d Why might this happen?

Summary

Learning Logs:

On your book answer 3 of the following statements:

1. In the lesson I learnt….

2. I was surprised by….

3. One thing I liked most about today was….

4. The main thing I want to know more about is…..

5. I was interested in……

6. One thing I’m not sure about is…..

•http://www.youtube.com/watch?v=tzSvEw4W16U

8D A few words to check

Can you match each word to its definition?

Carnivores

Consumers

Producers

Herbivores

Omnivores

Animals that eat plants and animals.

Organisms that build food using energy from sunlight.

Animals that only eat plants.

Organisms that cannot make food by photosynthesis.

Animals that only eat animals.

Animals that only eat animals.

Organisms that cannot make food by photosynthesis.

Organisms that build food using energy from sunlight.

Animals that only eat plants.

Animals that eat plants and animals.

grass rabbit

rabbit grass

rabbit grass

Write down the correct food chainFood chains