Starter Activity: On a show me board Choose an organism and state where it gets its energy from.

Energy in Ecosystems Learning Intention: Describe and explain what happens to the flow of energy in an ecosystem. Success Criteria: Construct a food chain Describe the path of energy flow in a food chain Explain how much energy is lost from a food chain Explain how energy is lost from a food chain

Food chains – what eats what? What is the food chain in this habitat?

A food chain shows what is eaten by what. Each arrow means ‘eaten by’. What does this food chain show? A leaf is eaten by a caterpillar, which is eaten by a bird, which is eaten by a cat. Energy is transferred from one organism to another in the direction of the arrow. Food chains leaf caterpillar bird cat

Feeding Relationships Key Words Key wordMeaning Species Population Producer Consumer Herbivore Carnivore Omnivore

Drag the organisms into the boxes to make three food chains. Food chains

Draw your own food chains based on the following guidelines: a) A food chain from a forest. b) A food chain from an ocean. c) A food chain with four organisms in it. d) A food chain that ends with you! Use arrows ( ) to show the transfer of energy between the organisms that you choose. Food chains – draw your own

Read the following paragraph about who eats whom in the Antarctic and on a show me board draw a food chain that shows the feeding relationships in this habitat. Don’t forget that your food chain must start with a producer! Killer whales or orca’s range around Antarctica hunting for their food. One of the species that they eat are the Weddell Seal. Weddell seals are large mammals that stay in Antarctica all year round. One of the many things that they eat are squid. Squid are very fast hunters who often poison their prey. They feed on many different organisms including shrimp. Shrimp are small animals that live on the ocean floor. There are over 2,000 different species of shrimp all over the world. They are omnivores but phytoplankton makes up a large part of their diet. Antarctic food

killer whale weddell seal squidshrimp phyto- plankton Antarctic food chain – answer Killer whales or orca’s range around Antarctica hunting for their food. One of the species that they eat are the Weddell Seal. Weddell seals are large mammals that stay in Antarctica all year round. One of the many things that they eat are squid. Squid are very fast hunters who often poison their prey. They feed on many different organisms including shrimp. Shrimp are small animals that live on the ocean floor. There are over 2,000 different species of shrimp all over the world. They are omnivores but phytoplankton makes up a large part of their diet.

Energy Flow in Ecosystems Watch the following video clips: Energy in Ecosystems Clip 1 Energy in Ecosystems Clip 2 Answer these questions on a Show Me Board: 1.How much energy is lost at each level of a food chain? 2.How is this energy lost?

At each level in a food chain 90% of energy is lost as: Heat Movement Undigested materials Energy Flow in Ecosystems

Energy in Ecosystems Learning Intention: Describe and explain what happens to the flow of energy in an ecosystem. Success Criteria: Construct a food chain Describe the path of energy flow in a food chain Explain how much energy is lost from a food chain Explain how energy is lost from a food chain