Transcript Light Absorption 2 - Hicksville Public Schools / Homepage

AIM: How do plants absorb light for
photosynthesis?
DN: Write the equation for
photosynthesis. What are the raw
materials and the end products?
HW:
What reaction is this?
PHOTOSYNTHESIS
Where is the energy coming from?
The Sun
What color is
sunlight?
White
Is white light really white?
What do you see?
ROY G BIV
Where does photosynthesis
happen?
In what organelle does
photosynthesis take place?
Why are chloroplasts green?
Chlorophyll – green pigment
Traps ROY ___ BIV
It reflects Green
How do chloroplasts trap light energy?
They have Chlorophyll
green pigment that absorbs all colors
Of white light, except_______
Would a plant grow in green
light?
No because it will not absorb any energy
to carry out photosynthesis- chlorophyll
reflects green light
Chlorophyll is not the only
pigment!
In the
Fall we
See the
Others
https://www.youtube.com/watch?
v=qH-AJDqsSII
Other
pigments
found in
leaves
What colors do they absorb?
How can we separate these pigments?
Chromatography
• Separates the components of a mixture
• Ex: can separate the pigments of a plant