LESSON 1: THE SUNLIGHT

Energy

All processes that occur in living and non-living systems require _____? Photosynthesis is no exception.

Solar Energy

The energy that comes from the sun is called _____?

Energy Content and Wavelength

Solar Energy travels as wave and is described in terms of its _____?

photons

Solar Energy comes as discrete packets called _____?

Visible Light

The component of solar energy that is important to photosynthesis is the _____? It is a white light.

Short Wavelengths

The components of solar energy before the visible light have _____ such as gamma rays, x-rays and ultraviolet rays. You do not see them.

More Energy

Short-wavelength components have _____.

Less Energy

Long-wavelength components have _____.

42%

Only _____ of the solar energy passes through the atmosphere and reaches the earth.

Ozone

High energy, short wavelengths are screened out by _____.

Water and Carbon Dioxide

The lower energy long wavelengths are screened out by _____ in air

2%

Only _____ of the light that reaches the earth is utilized in photosynthesis.