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May 7, 2012 Title : It all starts with a plant Objective : describe how energy moves through a food chain Warm-Up : Answer the following questions in complete sentences: How are plants and animals different? Why is photosynthesis important? . RIGHT PAGE 78 may 9,2012
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May 7, 2012 Title: It all starts with a plant Objective: describe how energy moves through a food chain Warm-Up: Answer the following questions in complete sentences: • How are plants and animals different? • Why is photosynthesis important?
RIGHT PAGE78may 9,2012 Title: What is your favorite food chain? Objective: analyze the role of producers / consumers, predator/prey Words to Know: producer (skip a line) consumer (skip a line) predator (skip a line) prey (skip a line) food chain (skip a line)
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.
Producers Nearly all food chains start with a plant. Green plants are called producers because they produce their own food. COPY THIS DEFINITION! (notebook page 78) Producers: Plants make their own food.
Consumers 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! (notebook page 78) 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.
Predators 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! (notebook page 78) Predators: Animals that eat other animals.
Prey 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! (notebook page 78) Prey: Animals that are EATEN BY other animals.
Predator Prey Predator Prey Predator 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. COPY THIS DEFINITION! (notebook page 78) Food Chain: Shows what animals eat. The flow of energy is shown with arrows. Eaten by: Eaten by: Producer Consumer Consumer Where are the consumers and producers?
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? Plants absorb sunlight, which gives them energy to produce food. (That’s why we call these producers). Add a CONSUMER that eats plants. Add another CONSUMER that preys on other consumers.
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 Grass Fox
Video 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?)
LEFT PAGE79January 30, 2009 Title: Food Chain + Food Chain = Food Web Objective: understand that food webs have many parts Warm-Up: Food Chains (on third slide)
Right PAGE80January 30, 2009 Title: What a tasty web we weave Objective: describe and create a food web Words to Know: Herbivore(skip 2 lines) Carnivore (skip 2 lines) Omnivore (skip 2 lines) Food web (skip 2 lines) Question: What is the best way to show the flow of energy through organisms?
WARM UP Draw four food chains: remember what always comes first in a food chain AND then put each organism in the correct order • First food chain: deer, tree • Second food chain: snake, grass, hawk, mouse • Third food chain: hawk, grass, mouse • Fourth food chain: cricket, hawk, grass, frog
WARM UP • tree -> deer producerconsumer 2. Grass -> mouse -> snake -> hawk producerconsumer consumer consumer prey both predator 3. Grass -> mouse -> hawk producerconsumer consumer preypredator 4. Grass -> cricket -> frog -> hawk producerconsumer consumer consumer prey both predator
Energy to Live 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.
Herbivores COPY THIS DEFINITION! (notebook page 80) Herbivores: Animals that eat ONLY plants Example: rabbits and cows 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.
Carnivore Animals that eat plants 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! (notebook page 80) Carnivores: Animals that eat ONLY meat Example: Lions and sharks
Omnivore 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! (notebook page 80) 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.
Food Webs COPY THIS DEFINITION! (notebook page 80) Food Web: Many food chains put together FOOD WEBS SHOW HOW PLANTS & ANIMALS ARE INTERCONNECTED BY DIFFERENT PATHS.
Is a Food Chain a Good Model? No! A Food Web is a more complete picture of what really happens in nature. -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?
Food Webs • How many food chains can you make from this food web?
Food Webs • How 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
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.
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.
The Bottom of the Food Chain Plants such as _____________________ and _____________________ are at the _____________________ of the food _____________________. Plants get their energy from the _____________________. trees grass bottom chain sun
The Middle of the Food Chain deer herbivores rabbits carnivores omnivores deer 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 ________________ rabbits herbivores carnivores omnivores