How Do organisms How Do organisms Get Energy?Get Energy?

Objectives:Objectives:-Learn how animals obtain -Learn how animals obtain

nutrients.nutrients.-Identify an ecosystem’s energy -Identify an ecosystem’s energy

source.source.-Describe how energy moves -Describe how energy moves

through an ecosystem.through an ecosystem.

VocabularyVocabulary•ProducerProducer•Food ChainFood Chain•ConsumerConsumer•Food WebFood Web•Energy PyramidEnergy Pyramid

Getting EnergyGetting EnergyA.A. Getting EnergyGetting Energy

1.1. Everything you do requires energyEverything you do requires energy

2.2. All living things need energy to move, eat, grow & All living things need energy to move, eat, grow & reproducereproduce

3.3. Energy starts with the sunEnergy starts with the sun

4.4. Food Chains show how energy flows through an Food Chains show how energy flows through an ecosystemecosystem

5.5. A primary consumer is a herbivore, eats only plants A primary consumer is a herbivore, eats only plants (producers)(producers)

6.6. A secondary consumer is a carnivore, eats meat A secondary consumer is a carnivore, eats meat (primary consumers)(primary consumers)

7.7. Decomposers eat the remains of dead animals Decomposers eat the remains of dead animals (bacteria, fungi) and then return the nutrients in the (bacteria, fungi) and then return the nutrients in the soil.soil.

VocabularyVocabulary

ProducerProducer: :

An organisms that makes An organisms that makes its own food.its own food.

Food ChainFood Chain: :

A sequence of connected A sequence of connected producers and producers and

consumers.consumers.

ConsumerConsumer: :

An organism that eats An organism that eats other organisms.other organisms.

Food WebsB. Food Webs

1. A food chain shows feeding relationships in ecosystems.2. Since most organism are part of more than one food chain, a Food Web is a better way to show feeding relationships.3. A change in one population in an ecosystem can affect other

populations…ex: if the population decreased or disappeared, the animals that feed on the mouse would have less food and would result in their population decreasing too.

VocabularyVocabulary

Food WebsFood Webs: :

A group of connected A group of connected food chains in an food chains in an

ecosystem.ecosystem.

Insta-LabInsta-Lab-Brainstorm a list of organisms -Brainstorm a list of organisms

in your area.in your area.-Write the name of one on a -Write the name of one on a

large index card.large index card.-Use string to attach the card -Use string to attach the card with your organisms’ name to with your organisms’ name to another students’ cards with another students’ cards with the names of organisms that the names of organisms that eat yours or are eaten by it.eat yours or are eaten by it.

-What have you and the other -What have you and the other students made?students made?

The Energy PyramidThe Energy PyramidC. The Energy PyramidC. The Energy Pyramid

1. Energy is lost each time it passes from 1. Energy is lost each time it passes from one organism to one organism to another.another.2. 90% of an organisms energy is lost at 2. 90% of an organisms energy is lost at each step of the each step of the food chain.food chain.3. An energy pyramid shows that energy 3. An energy pyramid shows that energy is is

lost at each level of the food chain.lost at each level of the food chain.4. Because of the energy loss, the number 4. Because of the energy loss, the number

of organisms decrease from one of organisms decrease from one level to the next.level to the next.

VocabularyVocabulary

Energy PyramidEnergy Pyramid: :

Shows that energy is lost Shows that energy is lost at each level of the food at each level of the food

chain.chain.

Lesson 2 ReviewLesson 2 Review

In your groups, complete #’s In your groups, complete #’s

1, 3, 5 & 61, 3, 5 & 6

As an individual do # 4As an individual do # 4

Remember…you have to use clues Remember…you have to use clues or definitions for hints on where or definitions for hints on where the words go…across and up or the words go…across and up or

down.down.

OROR

Complete the Art ActivityComplete the Art Activity