1. WHAT DO THESE THINGS HAVE IN COMMON?
Start with a comparison – graphite and diamonds. Both made of the same element – carbon, both with vastly different structure and function.
Pencil:
Diamond:

2. THE JOURNEY OF CARBON ATMOSPHERE PLANTS
I emphasize that a cycle can start wherever you like, so long as it ends back where you begin. Let’s start in the atmosphere.
PLANTS

3. FROM ATMOSPHERE TO PLANTS
Carbon is usually found as CO2 in the atmosphere
Plants take carbon in through photosynthesis
CO2 =
Sugar
Oxygen + + +
Pretty straightforward
The water drop with glasses is from another PowerPoint of mine
The carbon in CO2 becomes sugar

4. CARB S
OHYDRATES
World’s largest
POTATO

5. CARB S ON
World’s largest
POTATO

6. THE JOURNEY OF CARBON
ATMOSPHERE
ANIMALS
PLANTS

7. THE JOURNEY OF CARBON
ATMOSPHERE
ANIMALS
PLANTS

8. SHORT CYCLE RECAP Short Cycle Photosynthesis Respiration Consumption
ATMOSPHERE
Photosynthesis
Respiration
Short
Cycle
Recap
Consumption
PLANTS
ANIMALS

9. How do animals put carbon back into the atmosphere?
Short Cycle quiz time

10. What form is carbon in when it goes from animal to atmosphere?

11. What is the most common form of carbon when in the atmosphere?

12. What form does carbon take once in the plant?
I usually teach the carbon cycle over two class periods. This is where I end the first class period.

13. Moving in to the long cycle – a picture of coal

14. Oil

15. xx dead xx xx dead xx THE JOURNEY OF CARBON ATMOSPHERE ANIMALS PLANTS
The next steps
ANIMALS
PLANTS
FORMATION OF
FOSSIL FUELS

16. FROM FOSSIL FUELS TO THE ATMOSPHERE
Burning fossil fuels releases carbon in the form of CO2
ATMOSPHERE
BURNING FOSSIL FUELS
Co2 image
I don’t get in to greenhouse gases or global warming quite yet

17. Discuss how ocean critters use the carbon to build shells, etc.
Chalk cliffs of Moen

18. LONG CYCLE RECAP xx dead xx xx dead xx Long Cycle ATMOSPHERE BURNING
FOSSIL FUELS
Long Cycle
xx dead xx
xx dead xx
Long cycle recap
ANIMALS
PLANTS
FORMATION OF
FOSSIL FUELS

19. How long does it take fossil fuels to form?

20. What happens when fossil fuels are burned?

21. Where does most of the CO2 produced from burning fossil fuels end up?

22. GREENHOUSE EFFECT 2. It can be reflected back into space REJECTED
Atmosphere
(not to scale)
3. It can be trapped by the atmosphere
Sun
Earth expertly drawn by yours truly
1. It can get absorbed

23. Another example they have all experienced – source listed on the picture

24. GREENHOUSE GASES:
Gases in the atmosphere that trap heat
Earth would freeze without them

25. GREENHOUSE EFFECT
The overall warming effect caused by the greenhouse gases trapping heat
Atmosphere
(not to scale)

26. GLOBAL WARMING – The Debate
FACT – There is 30% more CO2 in the air now than there was 150 years ago
I do a class debate about global warming for my classes, that is why I present this as fact / theory. At the end of the debate I share my views about global warming being at least partially anthropogenic
Thermometer – source unknown

27. Graph source, unknown

28. GLOBAL WARMING – The Debate
FACT – There is 30% more CO2 in the air now than there was 150 years ago
THEORY – More CO2 traps more heat and causes higher temperatures worldwide

29. Consequences Rising temperatures
Species extinction caused by the inability to adapt
Sea levels rising
Severe weather conditions
Image sources: unknown

30. There is
strong
evidence
that
the
Earth is
heating
up.

31. The
debate is
about we
who
should
blame