The greenhouse effect occurs naturally and helps regulate the Earth's temperature. Certain gases in the atmosphere, such as carbon dioxide, methane, and water vapor, trap heat from the sun similarly to how greenhouse gases keep heat inside a greenhouse. However, increased levels of greenhouse gases from human activity are amplifying this effect and causing the planet to warm through global warming, raising sea levels and intensifying weather events like droughts and floods.

1. GREENHOUSE EFFECT
Presented by:
SACHIN KANDHARKAR
MIS NO.: 121124008

2. What is Greenhouse Effect?
• The amount of solar energy absorbed or radiated by Earth
is modulated by the atmosphere and depends on its
composition. Greenhouse gases—such as water vapour,
carbon dioxide, and methane—occur naturally in small
amounts and absorb and release heat energy more
efficiently than abundant atmospheric gases like nitrogen
and oxygen. Small increases in carbon dioxide
concentration have a large effect on the climate system.

4. • A greenhouse traps the sun's rays and keeps the heat from
escaping.
• It is warm inside.
• In the same way that the glass traps heat in a greenhouse, the
atmosphere traps heat next to the earth.
• Certain gases in the atmosphere such as carbon dioxide,
methane and water vapour trap energy from the sun.
• The natural greenhouse gases act like a big blanket around the
earth, keeping it warm.
• Humans can create extra greenhouse gases but this means that
more heat gets trapped.

5. What Happens if More Greenhouse Gases are Generated?
• Warming Earth’s climate.
• Global Warming
• Higher sea levels
• More rainfall and
• Severe droughts and floods.

6. References:
• IPCC, 2007: Climate Change 2007:
• Science Education Handout, March 2011
• Greenhouse Effect: A Scientific Analysis