This document provides information about aquatic and terrestrial food webs. It discusses producers that get energy from photosynthesis, primary and secondary consumers that eat other organisms, and examples of connections between aquatic and land-based food chains like bears eating salmon. The document also notes that the first trophic level contains the most energy and that energy decreases at each subsequent trophic level as it is transferred between organisms in a food web.

1. 3/12/12 A/B Day
LEQ: How are aquatic and terrestrial
food webs connected?
1. What is a wetland?
2. What is a tributary?
3. What is a watershed?
4. How are estuaries and wetlands similar?
How are they different?
5. Copy and complete: Most of our freshwater
is located [underground/in lakes and
rivers/frozen in glaciers and polar ice caps]

2. Track your progress!
-1 = 96 -9 = 64 -17 = 32
-2 = 92 -10 = 60 -18 = 28
-3 = 88 -11 = 56 -19 = 24
-4 = 84 -12 = 52 -20 = 20
-5 = 80 -13 = 48 -21 = 16
-6 = 76 -14 = 44 -22 = 12
-7 = 72 -15 = 40 -23 = 8
-8 = 68 -16 = 36 -24 = 4

3. Today’s LEQ: How are aquatic and
terrestrial food webs connected?
By the end of today, you should be able to…
1. Identify aquatic and terrestrial animals
2. Describe how energy flows through different
trophic levels
3. Explain the concept of interconnected food
webs

4. Focus Vocabulary:
128. Producer
129. Consumer
130. Decomposer
131. Photosynthesis
132. Aquatic/Terrestrial
133. Trophic Level
134. Food Web

5. Draw a T-Chart in your notes:

6. Sort these into your T-Chart!
Seaweed Eagle Shark
Bear Tree
Algae
HOW DID YOU
Mouse
Fish Krill
Snake
Ant SORT THEM?!
Turtle Rabbit
Frog Dolphin
Human Shrimp

7. Ways we could sort them…
Plants or Animals?
Water or Land?
Predators or Prey?

8. Draw this in
FOOD CHAIN your notes:

9. FOOD CHAIN
PRODUCERS: Make their own
food by PHOTOSYNTHESIS
(using sunlight to
create energy)

10. BrainPop: Photosynthesis

11. Chemical Reaction: Photosynthesis
What are the reactants?
What are the products?
CO₂ + H₂O  C₆H₁₂O₆ + O₂
Water Oxygen!
Carbon Glucose
Dioxide (plant food)

12. FOOD CHAIN
PRIMARY CONSUMERS:
eat plants
PRODUCERS: Make their own
food by PHOTOSYNTHESIS
(using sunlight to
create energy)

13. FOOD CHAIN
SECONDARY CONSUMER:
eats primary consumers
for energy
PRIMARY CONSUMERS:
eats plants for energy
PRODUCERS: Make their own
food by PHOTOSYNTHESIS
(using sunlight to
create energy)

14. Identify: producer, primary
consumer, secondary consumer, and tertiary
consumer

15. Draw this in your notes:
Producers Consumers

16. Which of our consumers areyour T-Chart!
Sort these into primary consumers?
Which are secondary or tertiary consumers?
Seaweed Eagle Shark
Bear Tree
Mouse
Algae Fish Krill
Snake
Ant Turtle Rabbit
Frog Dolphin
Human Shrimp

17. FOOD CHAIN
DECOMPOSERS: Break SECONDARY CONSUMER:
down dead things to eats primary consumers
get energy for energy
PRIMARY CONSUMERS:
eats plants for energy
PRODUCERS: Make their own
food by PHOTOSYNTHESIS
(using sunlight to
create energy)

18. Brainpop: Food Chains

19. 1st Trophic
Level

20. What is in the first trophic level?

21. Which of these are
in the first trophic level?
Seaweed Eagle Shark
Bear Tree
Mouse
Algae Fish Krill
Snake
Ant Turtle Rabbit
Frog Dolphin
Human Shrimp

22. 2nd Trophic
Level
1st Trophic
Level

23. What is in the second trophic level?

24. Which of these are
in the second trophic level?
Seaweed Eagle Shark
Bear Mouse Tree
Algae Fish Krill
Snake
Ant Turtle Rabbit
Frog Dolphin
Human Shrimp

25. 3rd Trophic
Level
2nd Trophic
Level
1st Trophic
Level

26. What is in the third trophic level?

27. Which of these are
in the third (or fourth) trophic level?
Seaweed Eagle Shark
Bear Mouse Tree
Algae Fish Krill
Snake
Ant Turtle Rabbit
Frog Dolphin
Human Shrimp

28. How does energy go through the food chain?
Not all trophic levels in the food chain are created
equal! Every organism in the food chain takes in
energy, either from the sun (through photosynthesis) or from
eating something else. But, every time something gets
eaten, it doesn’t transfer all of its energy—just some of it. For
example, it takes a rabbit lots of energy to grow bones and
teeth, but hawks don’t EAT bones and teeth, so the hawk
doesn’t get all of the energy that a rabbit has!
As a result, every time we go UP one trophic level, only
about 10% of the energy gets passed on. That’s why we draw
food chains in a pyramid—the 1st trophic level (the producers)
have a TON of energy, so it’s place on the pyramid is much
bigger than the secondary and tertiary consumers (like eagles
or sharks) at the top of the pyramid.

30. LEAST
ENERGY!
WHERE IS THE
MOST ENERGY?
MOST
ENERGY!

31. CONTEXT CLUES:
“Fish, shrimp, whales, krill, coral reefs, and
kelp are all a part of the aquatic world”
“The terrestrial environment around my
house is very interesting—there are
trees, grasses, rocks, insects, and
mammals such as raccoons and
squirrels.”
Stop and Jot: Write your own definition of

32. Aquaman!

33. Aquatic Terrestrial

34. WORD WEB: What words do
you associate with “aquatic”?
Aquatic

35. WORD WEB: What words do
you associate with “terrestrial”?
Terrestrial

36. Draw this in your notes:
Aquatic Terrestrial

37. Sort these into your T-Chart!
Seaweed Eagle Shark
Bear Tree
Mouse
Algae Fish Krill
Snake
Ant Turtle Rabbit
Frog Dolphin
Human Shrimp

38. Video on a bear eating a fish
• http://www.youtube.com/watch?v=QzZ4sy
stdZc&feature=fvwrel @ 1:45

39. Bears and Salmon:
How are these animals
related?
How are they different?

40. Draw this in your notes:
Food Web: used to show the connections
between different food chains

41. What are some ways in which aquatic and
terrestrial food webs are connected?

42. What are some ways in which aquatic and
terrestrial food webs are connected?

43. EOG Question:
Which of these is a primary
consumer?
a) grass
b) wolf
c) hawk
d) mouse

44. EOG Question:
In an aquatic food web, which of
the following would get its energy
directly from the sun?
a) krill
b) fish
c) algae
d) killer whale

45. EOG Question:
Look at the following food chain:
grass cricket frog snake
Which of these is the secondary
consumer?
a) grass
b) cricket
c) frog
d) snake

46. Draw your own food web: CIRCLE all the
connections between aquatic and
terrestrial food chains!
Seaweed Eagle Shark
Mouse Tree
Bear
Algae Fish Krill
Snake
Ant Turtle Rabbit
Frog Dolphin
Human Shrimp

47. Summarizer
1. How do producers get their energy?
2. What is example of a connection between an
aquatic and a terrestrial food chain?
3. What is the difference between a primary
consumer and a secondary consumer?
4. What trophic level are trees in?
5. Why do you think decomposers are
important?
6. Which trophic level of the food chain has the
most energy?

48. Discovery Education:
Food Chains and Food Webs