Transcript Food Chains - cloudfront.net

10/30 - 6th Grade Agenda
Learning Objective: to understand that almost all
kinds of animals’ food can be traced back to plants and
that the sun is often the ultimate source of energy
needed for all organisms to stay alive and grow.
Video: Energy Pyramids
Text book Reading p.404-409
HW: Reading & Notetaking p 178-180
HW: Extended activity guide and study guide
• Food Chain
Food Chains
• A series of events in which one
organism eats another and
obtains energy.
• What do food
chains show? • Food chains show the transfer of
energy in an ecosystem
• What do the
arrows
• The arrows represent the
represent?
transfer of energy.
All Food Chains and Webs start with
the sun. The sun is the source of all
the energy on the earth.
What do
food chains start
with?
• Almost all Food Chains start with
the sun
• After the sun is an organism that
What type of
organism is after the can do photosynthesis. Like plants
sun?
and phytoplankton.
Describe
photosynthesis.
• Sunlight + Carbon Dioxide + Water
= Energy
– This process is called Photosynthesis
Food Chains
A food chain shows what is eaten.
The fly is eaten by the thrush.
Food Chains
A food chain shows what is eaten.
The lettuce is eaten by the rabbit.
The lettuce is eaten by the slug, the slug is eaten by the bird.
FOX
RABBIT
An animal that eats
other animals
GRASS
An animal that
eats plants
The arrows show
the food chain
A plant - makes its
own food
• Sample food
chains:
• Sun →milkweed → aphid →ladybug
→bird → mushroom
• Sun → grass → zebra → lion → vulture
• Sun → seeds → grasshopper→ mouse
→ hawk
• THE ARROWS SHOW THE DIRECTION
THAT THE ENERGY MOVES
Sort these animals into a food chain..
Can you
think of a
food chain of
your own?
Warm up 1: Can you make a food chain? From the following
organisms
Plants need light for photosynthesis
We call plants producers because
they produce energy from the sun
directly.
• Producers
Flowers
Tree
• An organism that can make its
own food . They use carbon
dioxide, water and sunlight to
make energy, through a process
called photosynthesis.
• Producers are the source of all
food in an ecosystem. Without
producers there is no food chain.
Phytoplankton
Sun
Producer
• Decomposers
• Organisms that break down
wastes and dead organisms and
return the raw materials to the
environment.
• At the end of the food chain
• Two major groups of
decomposers are:
– Bacteria
– Fungi
Decomposer clips: 1, 2, and 3,
animals
fungus
bacteria
sow bug, roley- poly, pill bugs
fly maggot
wood roach
slug
dung beetle
earthworms
• Consumers
• An organism that obtains
energy by feeding on other
organisms.
• Ex: Deer, Humans, Snakes,
Bat, Cat, Hippopotamus,
Cricket, Rabbit
• Sample food chains clips:
1, 2, 3, 4, 5
• Food Chain Review
A Basic Food Chain
Plants absorb light from the sun, which is
turned into energy to grow. We call these
producers.
The vegetarian animals eat the plants, they
are called primary consumers.
Secondary consumers prey on primary
consumers.
Sun
Producer
Primary Secondary
Consumer Consumer
Tertiary
Consumer
Pair Share
Partner A: Look to your partner and tell them the 3 types of
energy levels.
Partner B: Look at your partner and describe a producer and
give an example.
Partner A. Look at your partner and describe a consumer and
give an example.
Partner B: Look at your partner and describe a decomposer
and give an example.
Warm Up 2
1. What are the 3 types of energy
levels?
2. Describe a producer and give
an example.
3. Describe a consumer and give
an example.
4. Describe a decomposer and
give an example.