Properties of Light

Sunlight is a form of electromagnetic radiation, transmitted as waves or photons.

Sunlight is a mixture of all colors of light. Each color of light has a different wavelength, and thus a different amount of energy.

Plants only use visible wavelengths of light.

Blue light has more energy than red light (its faster for a small wave to move than a long wave----think of jumping rope!)

When an object reflects a color, that is the color it appears.

Blue book reflects blue. All other colors are absorbed.

Green leaf reflects green. The leaf absorbs all other colors which are used for photosynthesis.

Red shirt reflects ___?___. It absorbs ___?___.

[Plant Pigments]