2 / 6
7th Grade Science — Photosynthesis
The Photosynthesis Equation
6CO2 + 6H2O + light energy -> C6H12O6 + 6O2
Inputs: carbon dioxide, water, sunlight
Outputs: glucose (plant food) and oxygen (what we breathe)
3 / 6
7th Grade Science — Photosynthesis
Quick Check
Check for understanding: what would happen to a plant kept in total darkness?
Turn to a partner and explain your answer using the equation
We'll share out in 2 minutes
4 / 6
7th Grade Science — Photosynthesis
Where Photosynthesis Happens
Mostly in the leaves, inside cells packed with chloroplasts
Chloroplasts contain chlorophyll, the pigment that captures light
This is also why most leaves look green
5 / 6
7th Grade Science — Photosynthesis
Why It Matters for Us
Photosynthesis produces most of the oxygen we breathe
It's the base of nearly every food chain on Earth
Understanding it helps explain why deforestation affects climate