Science - Year 3/4B Summer 1

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Presentation transcript:

Science - Year 3/4B Summer 1 Animals including humans The Circle of Life Session 5 Teaching PowerPoint © Original resource copyright Hamilton Trust, who give permission for it to be adapted as wished by individual users. We refer you to our warning, at the foot of the block overview, about links to other websites.

Where does all energy on planet Earth come from? The Sun How far away is the sun? About 93 million miles!

Green plants use sunlight to make their food Green plants use sunlight to make their food. What is this process called? Photosynthesis Green plants are called Producers because they produce their own food.

What feeds what? Starting with the sun, put these in order in the food chain The energy is being transferred from creature to creature and the arrows show the direction it is going The sun provides the energy for the lettuce to grow The hedgehog eats the slug The slug eats the lettuce The fox eats the hedgehog

Let’s take a closer look at this Food Chain What is the Producer? What is the Primary Consumer? What is the Secondary Consumer? What is the Top Predator?

Which animals are predators? Which animals are prey? I’m prey to the hedgehog and I’m a predator of the hedgehog I’m a predator of the slug and I’m prey to the fox

In reality though, most animals eat more than one thing so a food chain is really more of a food web!

Look closely at this food web and use it to answer the following questions: Who are the predators of the squirrel? The fox and the hawk Who are the secondary consumers? How many producers are shown? Which are the top predators? Who is the hedgehog’s prey? Who are the primary consumers? The fox and the hawk (because nobody eats them) The slug Every animal except the hawk (because they all eat plants) The hawk, the fox and the hedgehog 4 (all the plants)

You might be wondering how the same animal can be both a primary and a secondary consumer. Think about the hedgehog in this food chain. Is it a primary or secondary consumer? A primary consumer because it is eating a producer (the blackberries). What is the hedgehog in this food chain? A secondary consumer because it is eating a primary consumer (the slug).

Wow. What a lot you’ve learnt about food chains and food webs Wow! What a lot you’ve learnt about food chains and food webs. Now it’s time to make your own!