1. 10/ th 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
HW: Reading & Notetaking p
HW: Extended activity guide and study guide

2. Energy in Ecosystems

3. Food Chains Food Chain What do food chains show?
What do the arrows represent?
A series of events in which one organism eats another and obtains energy.
Food chains show the transfer of energy in an ecosystem
The arrows represent the transfer of energy.

4. All Food Chains and Webs start with the sun
All Food Chains and Webs start with the sun. The sun is the source of all the energy on the earth.

5. Almost all Food Chains start with the sun
What do food chains start with?
What type of organism is after the sun?
Describe photosynthesis.
Almost all Food Chains start with the sun
After the sun is an organism that can do photosynthesis. Like plants and phytoplankton.
Sunlight + Carbon Dioxide + Water = Energy
This process is called Photosynthesis

6. Food Chains A food chain shows what is eaten.
The fly is eaten by the thrush.

7. Food Chains A food chain shows what is eaten.
The lettuce is eaten by the rabbit.

8. The lettuce is eaten by the slug, the slug is eaten by the bird.

9. An animal that eats other animals RABBIT
FOX
An animal that eats other animals
RABBIT
An animal that eats plants
GRASS
A plant - makes its own food
This is a simple and familiar example
The arrows show the food chain

10. 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

14. Sort these animals into a food chain..
Can you think of a food chain of your own?

15. Warm up 1: Can you make a food chain? From the following organisms
As you see the pictures of animals appear on the screen, think about what each animal might eat and is there another animal that might eat them.

16. Plants need light for photosynthesis
We call plants producers because they produce energy from the sun directly.

17. Producers
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.
Flowers
Tree
Phytoplankton
Sun
Producer

18. At the end of the food chain Two major groups of decomposers are:
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,

19. animals
fungus
bacteria
sow bug, roley- poly, pill bugs
fly maggot
wood roach
slug
dung beetle
earthworms

20. 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

21. 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.

22. Sun Producer Primary Secondary Tertiary
Consumer Consumer Consumer

25. 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.

26. 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.