The greenhouse effect is the increase in temperatures attributed to gases in the Earth's atmosphere that capture the Sun's energy.
- The Sunlight passes through the atmosphere.
- About a third of the energy is immediately reflected back to space by earth's atmosphere.
- Rest of the energy is absorbed by earth and warms the planet.
- This heat becomes infra-red radiation and is reflected back to space.
- The shield of green house gases trap this heat, making the planet even warmer.