all energy comes from the sun plants use the sun’s energy to make food in which process?...
TRANSCRIPT
All energy comes from the sun
Plants use the sun’s energy to make food in which
process?Photosynthesis!
We call plants producers because they produce energy from the sun
directly.
Nearly all food chains start with a plant.
Green plants are called producers because they produce their own food.
COPY THIS DEFINITION!
Producers: Plants make their own food.
Animals (and people!) are consumers.
Some consume plants to get the energy they need to live.
Others consume other animals. (Which are you?)
COPY THIS DEFINITION!
Consumers: Animals that need to eat to live.
Producer or Consumer?
CONSUMER
Producer or Consumer?
PRODUCER
Producer or Consumer?
CONSUMER
Producer or Consumer?
On your table:Label each organism as a
PRODUCER or CONSUMER
AND EXPLAIN WHY you chose that.
Animals that eat other animals are called predators.
Some animals are BOTH predators and prey.
This means they eat some animals but are eaten by others.
COPY THIS DEFINITION!
Predators: Animals that eat other animals.
Animals that are eaten by other animals are called prey.
Some prey animals only eat plants.
Some predators (that eat other animals) can also be prey to different animals.
COPY THIS DEFINITION!
Prey: Animals that are EATEN BY other animals.
Prey
Predator
PredatorPreyPredator
Prey
Predator or Prey?
On your table:Label each organism as a PREDATOR
or PREY (or both, maybe…)
AND EXPLAIN WHY you chose that.
FOOD CHAINS
Food CHAINS show what eats what in order to gain the energy it needs to live.
Food CHAINS use arrows to show what eats what.
Eaten by:
Eaten by:
Where are the consumers and producers?
Producer ConsumerConsumer
COPY THIS DEFINITION!
Food Chain: Shows what animals eat. The flow of energy is shown with arrows.
A food chain shows how energy is transferred between organisms
Where does the energy FIRST come from?
How to Build A Food Chain…
ALWAYS start with a PRODUCER!
WHY?
Add a CONSUMER that eats plants.
Add another CONSUMER that preys on other consumers.
Plants absorb sunlight, which gives them energy to produce food. (That’s why we call these producers).
How are we part of a food chain?
How are Humans part of this food chain?
Why do food chains have no more than four or five
links? There cannot be too many links in a
single food chain because the animals at the end of the chain would not get enough food (and hence energy) to stay alive.
Most animals are part of more than one food chain
Sort these animals into a food chain..
Rabbit
Fox
Grass
Sort these animals into a food chain..
Grass
Video: “What Is A Food Chain?”
Watch for different food chains(at the end, you will have to draw one of the food chains from the video)
Your Favorite Food (Chain)
Think of your FAVORITE meal (eg: hamburger and french fries,
pizza, fried chicken and mashed potatoes)
Write down your meal and all of its PARTS
For EACH part of the meal… create a FOOD CHAIN
(eg: If you chose a hamburger, where did the meat come from? The bun? The fries?)
PART II
WARM UPDraw four food chains:remember what always comes first in a
food chain AND then put each organism in the correct order
1. First food chain: deer, tree2. Second food chain: snake, grass,
hawk, mouse3. Third food chain: hawk, grass, mouse4. Fourth food chain: cricket, hawk,
grass, frog
WARM UP1. tree -> deer producer consumer
2. Grass -> mouse -> snake -> hawk producer consumer consumer consumer prey both predator
3. Grass -> mouse -> hawk producer consumer consumer prey predator
4. Grass -> cricket -> frog -> hawk producer consumer consumer consumer prey both predator
In order to live, animals need energy.
Some animals get the energy they need to live from eating plants and other vegetation.
Some animals get their energy from eating other animals.
Some animals eat both plants and other animals.
Animals that eat plants are called Herbivores.
“Herbi” means “plants”.
Herbivores have specialized teeth and stomachs to enable them to get the energy they need from plants.
COPY THIS DEFINITION!
Herbivores: Animals that eat ONLY plants
Example: rabbits and cows
Animals that eat meat are called Carnivores.
“Carni” means “meat”.
Carnivores have specialized teeth and stomachs to enable them to get the energy they need from the bodies of other animals.
COPY THIS DEFINITION!
Carnivores: Animals that eat ONLY meat
Example: Lions and sharks
Animals that eat plants and meat are called Omnivores. OMNI means “ALL”
Humans are omnivores.
Omnivores have teeth and stomachs that enable them to eat and digest both plants and meat.
COPY THIS DEFINITION!
Omnivores: Animals that eat BOTH plants and meat
Example: Humans and bears
Herbivore, Carnivore or Omnivore?
On your table:Label each organism as an
Herbivore, Carnivore or Omnivore
AND EXPLAIN WHY you chose that.
Herbivore, Carnivore or Omnivore?
Organism Herbivore, Carnivore, or Omnivore (EXPLAIN)
Wolf (eatsfoxes andrabbits)
Carnivore: Eats ONLY meat
Moose(eatsgrass)
Herbivore: Eats ONLY plants
Fox (eats rabbits)
Carnivore: Eats ONLY meat
Bear (eatsberries andfish)
Omnivore: Eats BOTH plants and meat
Rabbit(eatgrass)
Herbivore: Eats ONLY plants
Food WebsFOOD WEBS SHOW HOW PLANTS &
ANIMALS ARE INTERCONNECTED BY DIFFERENT PATHS. COPY THIS DEFINITION!
Food Web: Many food chains put together
Is a Food Chain a Good Model?
-Do owls ONLY eat mice?-Do mice ONLY eat grasshoppers?-Do any other animals eat mice?-Do any other animals eat grasshoppers?-AND do other animals in this ecosystem eat grass?
No! A Food Web is a more complete picture of what really happens in nature.
Food WebsHow many food chains can you make from this food web?
Food WebsHow to create a food web…Put the FOUR food chains you drew for warm up together to create a food web
Where would you put the First food chain:
tree deer
Your Food Web…
TABLE: For each organism (trees, deer, etc.), decide whether it is a producer or consumer, predator or prey, and carnivore, omnivore, or herbivore. Mark an X under each category you choose.
OrganismProducers Consumers Predators Prey Herbivores Omnivores Carnivores
Trees
Grass
Deer
Snake
Hawk
Mouse
Cricket
Frog
TABLE: For each organism (trees, deer, etc.), decide whether it is a producer or consumer, predator or prey, and carnivore, omnivore, or herbivore. Mark an X under each category you choose.
OrganismProducers Consumers Predators Prey Herbivores Omnivores Carnivores
Trees XGrass XDeer X XSnake X X X XHawk X X XMouse X X XCricket X X XFrog X X X X
The Bottom of the Food Chain
bottom trees sun grass chain
Plants such as _____________________ and _____________________ are at the _____________________ of the food _____________________. Plants get their energy from the _____________________.
treesgrassbottomchain
sun
The Middle of the Food Chain
deer herbivores rabbits carnivores omnivores
Animals such as _____________________ and _____________________ get their energy by eating plants. They are called _____________________, which means 'plant eaters.' There are many more herbivores on our planet than _____________________, which are animals that eat meat. Humans are ________________
deerrabbits
herbivores
carnivores
omnivores
The Top of the Food Chain predators hunt prey
top lions both
_____________________ such as wolves and _____________________ are at the _____________________ of the food chain. Predators are animals that _____________________ other animals. The animals that they hunt are called _____________________. Some animals are __________ predator and prey.
Predatorslionstop
hunt
preyboth
The Food Web connected energy web more
Most animals belong to _____________________
than one food chain, which means many food
chains are _____________________ together.
Many food chains together form a food
_____________________. The food web shows
how the sun's _____________________ moves
from plants to animals to other animals.
more
connected
web
energy
`
1. What would most likely cause the rabbit population to decrease (get smaller)? EXPLAIN your answer!(A) An increase in the number of grass and trees(B) An increase in the number of hawks(C) An increase in the number of deer in the area
(D) An increase in the amount of available sunlight
2. Identify one of each (producer, consumer, predator, prey, omni/carni/herbivore) in the food web.
PART III
Warm Up
What happens to the remains of animals?
(What happens to an animal’s body after it dies? What happens to poop that animals leave on the ground?)
Where does a Food Chain End?
What happens to theOwl after it dies??
Scavengers and Decomposers
The Earth’s Clean-Up Crew!
When animals die, where do their bodies go?
They get eaten! Scavengers and Decomposers eat
dead remains to help keep the Earth clean.
Scavengers: Eat Dead Animals Some animals eat dead
animals. They are called scavengers. Scavengers help break
organic material into smaller pieces.
COPY THIS DEFINITION!
Scavengers: Animals that eat dead animals.
Examples: Vultures, worms, opossums, etc.
SCAVENGERS
Are we done with our food chain, yet?
Are we done with our food chain, yet? Scavengers eat dead stuff, but
they CANNOT eat everything. They leave behind a lot of unused
energy and nutrients. What happens to the scavengers’
leftovers? Decomposers eat the scraps
and break down the remaining organic matter.
Decomposers: Complete the Circle of Energy
Bacteria
The Last Step of the Food Chain
Decomposers
Fungus
Bacteria
The Earth’s
Clean-Up Crew!
COPY THIS DEFINITION!
Decomposers: Organisms that return nutrients from dead remains back to the soil.
Fungus and Bacteria
Decomposers
Decomposers are Everywhere!
And there are LOTS of them!A pinch of soil may contain almost
half a million fungi and billions of bacteria
Decomposer Animation…
What do Decomposers Do???
After scavengers break dead remains into smaller parts,
these smaller pieces are eaten by decomposers.
Decomposers eat animal and plant remains
Decomposers convert all remains into carbon dioxide (which they exhale during respiration) and nutrients. (DECOMPOSERS ARE PART OF THE CARBON CYCLE)
This recycles nutrients to be used again by plants and animals.
What I Need to Know…
Scavengers not the same… Two types of decomposers (fungi
and bacteria) They complete the food chain and
return the nutrients back to the beginning
Important because a) breaks down poop/dead stuff that we don’t want around and b) makes sure that nutrients don’t get wasted
Why are Decomposers Important?
Opinion-Proof
Opinion Decomposers are important and should not
be banned Scavengers not the same… Two types of decomposers (fungi and
bacteria) They complete the food chain and return
the nutrients back to the beginning Important because a) breaks down
poop/dead stuff that we don’t want around and b) makes sure that nutrients don’t get wasted
Opinion Proof_______________
What are decomposers?
(Name the two types)
Decomposersshould not bebanned because they are How do
decomposers help Important. the Earth? (Explain two
ways) Can scavengers
do the job of
decomposers? Explain
A Letter to the President
The Federal Government is planning to ban
decomposers! Write a letter to President Obama
convincing him why decomposers should not be
banned.
How to Write A LetterToday’s Date
President ObamaThe White HouseWashington, DC
Dear President Obama,
I am writing to ask you please do not ban decomposers (EXPLAIN YOUR REASONS WHY: PROVIDE THE PROOF FOR YOUR OPINION.)
Thank you for taking the time to read this letter. I hope you will consider the importance of decomposers.
Sincerely,YOUR NAME (first AND last name), 6th grader at Kennedy Middle School: Charlotte, NC
http://www.mhschool.com/science/2008/student/na/scienceinmotion/Common/SIM.html?Module=../Grade4/Chapter3-MicroorganismsAtWork/
Are we done with our food chain, yet? Scavengers eat dead stuff, but
they CANNOT eat everything. They leave behind a lot of unused
energy and nutrients. What happens to the scavengers’
leftovers? Decomposers eat the scraps
and break down the remaining organic matter.
Decomposers: Complete the Circle of Energy
Bacteria
The Last Step of the Food Chain
SCAVENGER Or
DECOMPOSER?
SNAIL
SCAVENGER Or
DECOMPOSER?
VULTURE
SCAVENGER Or
DECOMPOSER?
MUSHROOM
SCAVENGER Or
DECOMPOSER?
WORM
SCAVENGER Or
DECOMPOSER?
COCKROACHES
SCAVENGER Or
DECOMPOSER?
BACTERIA
SCAVENGER Or
DECOMPOSER?
MOLD
DecomposersWrite and answer:1. What is the difference between
a worm and a mushroom?2. What are the similarities
between snails and mold?3. What trophic level of the food
chain are decomposers?4. How do decomposers help the
food chain?