What is Energy?

What is Energy?Energy is the capacity for action/doing work

Why do we eat?

Why do we eat?

To have the capacity to carry out functions necessary for living

Why do we eat?

To have the capacity to carry out functions necessary for living

So our bodies are able to work

Why do we eat?

To have the capacity to carry out functions necessary for living

So our bodies are able to work

To obtain energy

How does energy move to our homes?

How does energy move to our homes?

Through a chain/web/network of power lines

How does energy flow through an ecosystem?

How does energy flow through an ecosystem?

Energy flows through food chains or food webs

A. Food Chain

A. Food Chain

1. A series of events in which one organism eats another and obtains energy

B. Food Web

B. Food Web

1. Pattern of overlapping food chains in an ecosystem

B. Food Web

1. Pattern of overlapping food chains in an ecosystem

C. Energy Roles in Food Webs

C. Energy Roles in Food Webs1. Producers

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores –

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores – eat plants only

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores – eat plants only

b. Carnivores

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores – eat plants only

b. Carnivores - eat other animals only

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores – eat plants only

b. Carnivores - eat other animals only

c. Omnivores

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores – eat plants only

b. Carnivores - eat other animals only

c. Omnivores – eat plants and animals

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores – eat plants only

b. Carnivores - eat other animals only

c. Omnivores – eat plants and animals

d. Scavenger

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores – eat plants only

b. Carnivores - eat other animals only

c. Omnivores – eat plants and animals

d. Scavenger – carnivore that feed on bodies of dead organisms

C. Energy Roles in Food Webs1. Producers – An organism that can make its own food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores – eat plants only

b. Carnivores - eat other animals only

c. Omnivores – eat plants and animals

d. Scavenger – carnivore that feed on bodies of dead organisms

3. Decomposers

C. Energy Roles in Food Webs1. Producers – An organism that can make its own

food

2. Consumers – An organism that obtains food by feeding on other organisms.a. Herbivores – eat plants only

b. Carnivores - eat other animals only

c. Omnivores – eat plants and animals

d. Scavenger – carnivore that feed on bodies of dead organisms

3. Decomposers – break down waste and dead organisms and return raw materials to the ecosystem

D. Energy Pyramid

D. Energy Pyramid

1. Diagram that shows the amount of energy flowing through a food web

D. Energy Pyramid

1. Diagram that shows the amount of energy flowing through a food web

D. Energy Pyramid

1. Diagram that shows the amount of energy flowing through a food web

a. Only about 10% of total energy at each level is passed onto the next level

D. Energy Pyramid

1. Diagram that shows the amount of energy flowing through a food web

a. Only about 10% of total energy at each level is passed onto the next level

1. organisms use 90% of the energy they consume to carry out life functions