Light energy and Photosynthesis

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Presentation transcript:

Light energy and Photosynthesis

Objective Analyze how photosynthesizers absorb light energy to produce chemical energy. Vocabulary Wavelenght Photons Pigment Nanometers Photosynthesis Visible light

LIGHT ENERGY AND PHOTOSYNTHESIS Different types of light. Light moves through space a bit like crests and the distance between one crest and the other is called a wavelength. Light is organized in packets of energy called photons and that the amount of energy that they can have is inversely proportional to the size of its wavelength which is measured in nanometers.

The one useful for photosynthesis is visible light, between 380 – 750nm. Photosynthetic organisms uses organic molecules called pigments to capture light (chlorophyll a and b, carotene, anthocyanin). Each pigment captures light at specific wavelength intervals.

Open your book and read page 97

Final activity In your notebook, draw a chart like the one below. Write 3 things you learned about the mechanism by which producers absorb light Write 2 questions that you still have. How is this aplicable to everyday life? 3 2 1