The greenhouse effect occurs when greenhouse gases in the atmosphere, such as water vapor, carbon dioxide, and methane, absorb and emit thermal radiation from the Earth's surface, trapping heat and warming the planet. While some level of greenhouse gases are natural, human activities like burning fossil fuels have increased their atmospheric concentrations and enhanced the greenhouse effect, causing global temperatures to rise. This warming effect has disadvantages such as changes to climate and weather patterns. The main natural sources of greenhouse gases are respiration, volcanoes, and wetlands, while human sources include fossil fuel combustion, agriculture, and deforestation.

1. GREENHOUSE EFFECT
Rahul gupta
Bhavya thakran
Tushar pal
Pranshu behl

2. WHAT IS IT?
 The greenhouse effect is
a process by which thermal
radiation from a planetary
surface is absorbed by
atmospheric greenhouse
gases, and is re-radiated in
all directions.

3. GREENHOUSE GASES
 The primary components of Earth’s atmosphere, N2 and
O2 do not have absorption in the IR wavelength range,
therefore, do not have a significant role in setting the
surface temperature of the planet…
 Greenhouse gas are efficient in absorbing IR light…
The most important greenhouse gases are:
 H2O – Water vapor.
 CO2 – Carbon Dioxide
 CH4 – methane
The most abundant greenhouse gas in Earth’s
atmosphere is water vapor. Most of the greenhouse
heating of Earth’s atmosphere is due to Water vapor
absorption of IR radiation emitted by Earth, and then
transferring the energy to the surrounding air molecule

6. CAN IT BE A BAD THING?
 Yes…
 Too many greenhouse gases can cause extra heat
to be trapped within the Earth’s atmosphere.
 This causes the Earth’s temperature to rise, which
in turn, affects many other things.

7. DISADVANTAGES OF GREEN HOUSE EFFECT
What many scientists are concerned about today is the enhanced
greenhouse effect. The "enhanced greenhouse effect" is a term
used to describe the excessive amounts of greenhouse gases
being placed in the atmosphere as a result of human activities,
such as the burning of fossil fuels. Fossil fuels (coal, oil and
natural gas) are non-renewable sources of energy. When we burn
fossil fuels (example: driving our cars), greenhouse gases
(example: carbon dioxide) are released into the atmosphere.
Since the global community has become increasingly dependent
on fossil fuels, the amount of greenhouse gases in the
atmosphere is steadily increasing. This basically causes the
greenhouse effect to become "enhanced." This means there are
greater amounts of greenhouse gases in the atmosphere, which
cause more heat from the sun to be trapped in the earth's
atmosphere, which causes temperatures to rise.

8. WHAT ARE THE NATURAL
SOURCES OF GREENHOUSE
GASES?
• Carbon Dioxide
• Humans and Animals Breathing
• Volcanoes
• Methane
• Cattles Digesting Food
• Rice Fields
• Ozone is naturally occurring

9. WHAT ARE THE MAN-MADE SOURCES OF
GREENHOUSE GASES?
 Methane
 Released from buried waste
 Coal mining
 Carbon Dioxide
 Burning of coal, oil, and gas
 Cutting down trees