1. Photosynthesis

2. Energy Energy is the ability to do work
Cars running on fuel  Chemical Energy
Computers and light bulbs  Electrical Energy

3. Living organisms depend on energy, too.
Sometimes, it is easy to see when we need energy
Other times, it is not that obvious…but we always need energy.

4. All organisms obtain energy in different ways

5. How do autotrophs/producers obtain energy?
All the energy that living organisms use can be traced back to the sun.

7. What is Photosynthesis?
Photo = Light
Synthesis = Creating/Building/Putting Together
Means “using light to create something”
Chemical reaction that uses sunlight to turn water and carbon dioxide into glucose (sugar) and oxygen

8. Reactants for Photosynthesis
Plants only need:
Carbon Dioxide
Water
Sunlight (Activation Energy)

9. Products from Photosynthesis
Plants will produce:
Glucose (Carbohydrate)
Oxygen

10. General Chemical Reaction+
Sunlight
6CO2
6H20
C6H12O6 +
6O2
Carbon Dioxide
Glucose
(Sugar) +
Sunlight
Water +
Oxygen

11. Occurs in the chloroplast of leaf cells Chlorophyll
Green pigment/molecule in chloroplast that gathers the sun’s energy.
Stoma/Stomata
Small opening in surface of leaf that allows air (CO2) to enter.

12. Time to sing…

13. To the tune of “Row, Row, Row Your Boat”
Photosynthesis Song
To the tune of
“Row, Row, Row Your Boat”

14. Water and carbon dioxide become Sugar and oxygen.
Photosynthesis
Uses light from the sun.
Water and carbon dioxide become
Sugar and oxygen.
It happens in the chloroplast
That chlorophyll makes green.
The autotrophs can make their food
Then we won’t go hungry.

15. Water and carbon dioxide become
Photosynthesis
Uses light from the sun.
Water and carbon dioxide become
Sugar and oxygen.

16. It happens in the chloroplast That chlorophyll makes green.
The autotrophs can make their food
Then we won’t go hungry.

17. Water and carbon dioxide become
Photosynthesis
Uses light from the sun.
Water and carbon dioxide become
Sugar and oxygen. .

18. It happens in the chloroplast That chlorophyll makes green.
The autotrophs can make their food
Then we won’t go hungry.

19. Water and carbon dioxide become Sugar and oxygen.
Photosynthesis
Uses light from the sun.
Water and carbon dioxide become
Sugar and oxygen.
It happens in the chloroplast
That chlorophyll makes green.
The autotrophs can make their food
Then we won’t go hungry.

20. Last Days on Earth 23:45

21. Photosynthesis Quick Check
Think again about the volcano video and explain why it would be an “End of the World” scenario.
In your explanation, use and underline the following key terms related to the process of photosynthesis.
Key terms
Sunlight
Carbon Dioxide
Autotroph
Oxygen
Heterotroph
Water
Photosynthesis
Glucose (Sugar)
Carbon Dioxide
Glucose
(Sugar) +
Sunlight
Water +
Oxygen

22. It happens in the chloroplast That chlorophyll makes green.
The autotrophs can make their food
Then we won’t go hungry.