Full Name – 2021
3/07/2012
Homeroom
Freedom is not free.
Aims:
SWBAT show how organisms in an ecosystem are
connected by creating and using food webs.
Do Now:
1. Complete this food chain by drawing what is
missing, both at the beginning and the end.
2. What is the purpose of a food chain?
Aims:
SWBAT show how organisms in an ecosystem
are connected by creating and using food
webs.
Agenda:
Entrance Procedures (7 min)
Food Webs [I do] (10 min)
Food Webs & Chains [We do] (10 min)
Try it! [You do] (20 min)
Closing (5 min)
Do Now:
Producer
Producer
The sun
Omnivore
Omnivore
Decomposer
Decomposer
Decomposers
1. Complete this food chain by drawing
what is missing, both at the beginning
and the end.
2. What is the purpose of a food chain?
To show how energy moves through an
ecosystem (what eats what).
Hook
Is everything connected? Why or why not?
Read It!
Most ecosystems contain many different
kinds of plants and animals. Each plant or
animal is part of more than one food chain.
When two or more food chains overlap, they
form a food web. In a food web, at least one
plant or animal from each food chain is part of
another food chain.
For example, the leaves, grasshopper, frog
and snake are all part of one food chain. They are
also part of a food web. In the food web shown,
the frog shown is not only prey for the snake, it is
also prey for the owl as well. The frog is part of a
second food chain that has the leaves,
grasshopper, frog and owl. The owl and the snake
may compete with each other for this source of
food.
Food Webs
food web is a diagram that shows all the
A __________
ecosystem connected
organisms in an ____________
___________
together.
can follow food webs by tracing the
We __________
energy from the ___________
producers all the way up
carnivores
the food web to the top predators (_________
and ___________).
omnivores
Remember, all ____
connected
life is ___________!
Food Webs [We do]
FOOD CHAIN
FOOD WEB
Circle the organisms from the food chain in
the food web.
Food Webs[We do]
How to follow a food web:
producer (or the sun).
1) Start with a __________
arrows from that
2) Follow the one of the _______
eats it.
producer to an organism that ________.
3) Continue following the arrows until you get
to the ____________________
apex (top) predator or the
decomposers
______________.
This is your food chain.
Food Webs [We do]
FOOD CHAIN
FOOD WEB
1)
FOOD CHAIN
D CHAIN
FOOD WEB
FOOD
WEB
2)
3)
FOOD CHAIN
FOOD CHAIN
FOOD WEB
FOOD WEB
Exit Slip:
1) What’s the difference between a food chain
and a food web?
2) What’s one situation where it would be
better to use a food chain?
3) What’s one situation where it would be
better to use a food web?
Homework:
Food Webs
Sneak Preview!__________________
Keystone Species