Greenhouse Effect Demonstration
![The Suns Rays](/sites/default/files/astro/gh1.jpg)
Solar Energy
The yellow arrow shows the direction of heat radiation from the Sun. The Suns heat is warming the greenhouse.
![Entry into the Greenhouse](/sites/default/files/astro/gh2.jpg)
The Sun's energy enters the Greenhouse
Because the Sun is so hot, the heat radiation can pass through the glass roof of the greenhouse.
![Entry into the Greenhouse](/sites/default/files/astro/gh3.jpg)
The Sun's energy is absorbed and re-radiated
The inside of the greenhouse absorbs the Sun's radiation and heats up. The greenhouse then produces radiation of its own.
![Entry into the Greenhouse](/sites/default/files/astro/gh4.jpg)
The re-radiated energy is trapped
The inside of the greenhouse is much cooler than the surface of the Sun, so it produces a different type of light. This is called infra-red light. It does not pass through the glass as easily. Thus, the heat gets trapped inside.