We Are Learning To use words correctly to describe feeding
relationships between animals and plants. show how energy flows
through food chains interlink food chains to form food webs
Slide 4
What Im Looking For: 1.Construct your own food chain 2.Spot at
least two food chains from a food web 3.Point arrows in the right
direction in a food chain 4.Construct a food web in a group 5.Be
able to answer quiz at the end
Your turn In pairs write down two food chains. Perhaps one of
the organisms in it could be you! (Hopefully not being eaten by a
wolf ) Draw in arrows pointing from the thing being eaten to the
thing eating it. KingfisherPondweed Insect larvae Minnow (little
fish)
Slide 8
Energy Flow Which way do the suns rays go? Which way does the
energy flow? What is it used for?
Slide 9
How is the suns energy used?
Slide 10
Plankton & Algae
Slide 11
Sun allows grass to grow Grass is eaten by Rabbits which are
eaten by Owls Food chain: a flow of energy in a habitat
Slide 12
Grass is eaten by Rabbits which are eaten by Owls Food chain: a
flow of energy in a habitat
Slide 13
Grass is eaten by Rabbits which are eaten by Owls Food chain: a
flow of energy in a habitat GrassRabbit The arrow means is eaten by
and always goes towards the consumer Owl
Slide 14
Except that Owls also eat Shrews as well as Rabbits Rabbit Owl
Shrew Grass
Slide 15
Shrews also eat other plant matter as well as Grass Rabbit Owl
Shrew Plant matter Grass
Slide 16
Shrews also have to watch out for weasels that might eat them
Rabbit Owl Shrew Plant matter Weasel Grass
Slide 17
And snails and worms eat the plant matter too. Rabbit Owl Shrew
Plant matter WormSnail Weasel Grass
Slide 18
Food Chain to Food Web Lets complete ours with hedgehogs (that
eat snails & worms) and foxes (that eat pretty much anything
that moves!)
Rabbit Owl Shrew Plant matter WormSnail Weasel Grass
HedgehogFox How many food chains are there now? Write down as many
as you can in 3 minutes!
Slide 21
Shrew Plant matter Worm Snail Weasel Grass Hedgehog Plant
matter Shrew Fox Plant matter Plant matter Owl Grass Rabbit
OwlShrew Fox GrassRabbitFox Hedgehog Weasel Grass Shrew Fox
Slide 22
Food Chain to Food Web The original food chain has expanded
into a food web with 8 interlinked chains as more organisms have
been added Food webs are normal in natural habitats as there is
nearly always more than one organism that eats something else.
Slide 23
Some Key Words Producer Consumer Herbivore Carnivore
Omnivore
Slide 24
PRODUCERS HERBIVORES CARNIVORES OMNIVORES
Slide 25
Your turn In groups of four use the pictures in the envelopes
to make your own food webs. Start off with individual food chains
Then try to link them together to make a food web. Draw in some
arrows the right way round!
Slide 26
PRODUCER HERBIVORE CARNIVORE Oak
TreeFoxMouseSquirrelKingfisherDaffodilSnailPlankton Well Done
Everyone!
Slide 27
What We Have Done: 1.Constructed food chains 2.Spotted at least
two food chains from a food web 3.Point arrows in the right
direction in a food chain 4.Constructed a food web in a group
5.Answered quiz at the end
Slide 28
Slide 29
Woodland Pond Hedgerow PRODUCERS HERBIVORESCARNIVORES Oak Grass
Small plants Dead material Plankton Pondweed Dead material Hawthorn
Dead material Caterpillar Mouse Woodlouse Insect larvae Snail
Greenfly Woodlouse Small bird Owl Snake Beetles Spiders Fish Hawk
Weasel