Transcript Energy Transfer

Energy Transfer
Through an Ecosystem
BELL RINGER
In your journals…
List some of your favorite foods.
Can you trace your food back
to it’s source of energy?
Objectives
 Students will describe vocabulary words
(Autotrophic, Heterotrophic, Producer, Primary
Consumer, Secondary Consumer, Decomposer).
 Students will apply vocabulary words to a food
chain or food web.
 Students will formulate how much energy is
transferred (and how much energy is lost) with
each stage of a food chain/web.
 Students will create a food chain/web which
synthesizes their knowledge of energy transfer
through a food chain, energy lost and vocabulary
words.
Vocabulary Words
Autotrophic
Heterotrophic
Producer
Primary Consumer
Secondary Consumer
Decomposer
Trophic
Pertaining to nutrition.
The feeding habits or food
relationship of different organisms in
a food chain.
2 Types: ways organisms get
energy
Autotrophic
Heterotrophic
Autotrophic Organisms
Self-sustaining or self-nourishing
organisms
e.g. green plants, algae, and
certain bacteria
A.K.A. Producers
Heterotrophic Organisms
Unable to self-nourish.
Feeds on organic matter produced
by, or available in, other organisms.
E.g. birds, cats, fish, mushrooms,
some bacteria.
A.K.A. Consumers and
Decomposers
Producer
 An autotrophic organism
capable of producing its own
food through the process of
photosynthesis (using light
energy)
e.g. green plants, algae, and
certain bacteria
Consumer
An organism that obtains food
by feeding on other organisms
or organic matter due to lack
of the ability to manufacture
own food.
a heterotroph.
E.g. birds, fish,dog, human
Primary Consumer
Any organism that consumes
or feeds on autotrophs or
decaying matter.
E.g. cows
Secondary Consumer
An organism that largely feeds
on primary consumers.
E.g. wolf
Decomposer
an organism that eats dead or
decaying organisms
E.g. fungus such as mold or
mushroom, some bacteria
Beach Ball Game
1.
2.
3.
4.
5.
6.
Autotrophic
Heterotrophic
Producer
Primary Consumer
Secondary Consumer
Decomposer
Energy is lost between
stages
Energy is lost as heat.
Energy is lost as waste.
Energy is used during
respiration.
Animals don’t usually eat all of
the food available in the
organism they feed on.
Group Activity
Make a food web using at least one
ingredient from your group’s food box.
Label/include all vocabulary words:
Autotrophic, heterotrophic, producer,
primary consumer, secondary
consumer, decomposer.
Include how many units each
organism would have if 10,000 units of
energy fall onto the producer.
(producer incorporates 1% of energy
that falls onto it. Only 10% of energy
passes from one stage to the next)