Date: Hour No.
UNIT - 1
Environmental Awareness
Global Warming: Causes, Effects, and Prevention
Causes of Global Warming
1. Greenhouse Gas Emissions:
o Carbon Dioxide (CO2): Primarily from burning fossil fuels (coal, oil, and natural gas) for energy
and transportation.
o Methane (CH4): Emitted during the production and transport of coal, oil, and natural gas, as well
as from livestock and other agricultural practices.
o Nitrous Oxide (N2O): From agricultural and industrial activities, as well as combustion of fossil
fuels and solid waste.
o Fluorinated Gases: Synthetic gases used in a variety of industrial applications.
2. Deforestation: Reduces the number of trees that can absorb CO2, increasing the concentration of
carbon dioxide in the atmosphere.
3. Industrial Processes: Various manufacturing processes release significant amounts of CO2 and
other greenhouse gases.
4. Agriculture: Certain farming practices increase methane and nitrous oxide emissions.
5. Waste Management: Landfills produce methane, a potent greenhouse gas, during the
decomposition of organic waste.
Effects of Global Warming
1. Rising Temperatures: Global temperatures have risen significantly, leading to more frequent and
intense heatwaves.
2. Melting Ice Caps and Glaciers: Accelerated melting of polar ice caps and glaciers contributes to
rising sea levels.
3. Rising Sea Levels: Threatens coastal communities and can lead to displacement of populations,
loss of habitat, and increased flooding.
4. Extreme Weather Events: Increased frequency and severity of hurricanes, droughts, floods, and
wildfires.
5. Ocean Acidification: Increased CO2 levels are absorbed by oceans, leading to acidification which
harms marine life.
6. Impact on Wildlife: Changes in climate and habitat loss threaten the survival of many species.
7. Agricultural Impact: Shifts in climate patterns can lead to reduced crop yields and food
shortages.
8. Human Health: Increased heat can lead to heat-related illnesses and death; changes in air quality
and the spread of diseases.
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Date: Hour No.:
Prevention of Global Warming
1. Reducing Greenhouse Gas Emissions:
o Renewable Energy: Shift from fossil fuels to renewable energy sources like solar, wind, and
hydroelectric power.
o Energy Efficiency: Implement energy-saving measures in industries, homes, and transportation.
2. Afforestation and Reforestation: Planting trees and restoring forests to absorb CO2 from the
atmosphere.
3. Sustainable Agriculture: Adopt farming practices that reduce methane and nitrous oxide
emissions.
4. Waste Management: Improve recycling and waste management to reduce methane emissions
from landfills.
5. Policy and Legislation: Implement laws and regulations that limit greenhouse gas emissions and
promote sustainable practices.
6. Public Awareness and Education: Increase awareness about the causes and effects of global
warming and encourage behavior change.
7. Carbon Pricing: Implement carbon taxes or cap-and-trade systems to incentivize reducing
emissions.
8. Technological Innovations: Invest in and develop new technologies that reduce emissions or
capture and store carbon.
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Date: Hour No.:
ASSESEMENT
Causes of Global Warming
1. Which of the following gases is primarily responsible for global warming?
o A) Oxygen
o B) Nitrogen
o C) Carbon Dioxide
o D) Argon
Answer:
2. Deforestation contributes to global warming because trees absorb:
o A) Methane
o B) Water vapor
o C) Carbon Dioxide
o D) Nitrous Oxide
Answer:
3. Which of the following activities does not significantly contribute to the increase in
greenhouse gases?
o A) Industrial manufacturing
o B) Planting trees
o C) Burning fossil fuels
o D) Deforestation
Answer:
Effects of Global Warming
4. Which of the following is a direct effect of global warming?
o A) Decrease in sea levels
o B) Increase in biodiversity
o C) Melting of polar ice caps
o D) Formation of new mountains
Answer:
5. Global warming is expected to cause which of the following changes in weather patterns?
o A) More stable weather conditions
o B) More frequent and severe storms
o C) Reduction in hurricanes
o D) Less rainfall
Answer: B) More frequent and severe storms
6. Rising global temperatures are linked to which of the following human health issues?
o A) Decreased incidence of heatstroke
o B) Increased risk of cardiovascular diseases
o C) Improved air quality
o D) Decreased spread of infectious diseases
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Date: Hour No.:
Answer:
Prevention of Global Warming
7. Which of the following energy sources is considered a renewable resource that can help
reduce global warming?
o A) Coal
o B) Natural Gas
o C) Solar Power
o D) Nuclear Power
Answer:
8. The process of capturing and storing atmospheric carbon dioxide is known as:
o A) Carbon Footprinting
o B) Carbon Sequestration
o C) Carbon Emission
o D) Carbon Calculation
Answer:
9. Which of the following actions can individuals take to help prevent global warming?
o A) Using energy-efficient appliances
o B) Driving gasoline-powered cars
o C) Increasing meat consumption
o D) Using disposable plastics
Answer:
10. International agreements aimed at reducing global warming typically focus on:
o A) Increasing deforestation
o B) Reducing greenhouse gas emissions
o C) Encouraging fossil fuel use
o D) Promoting urban sprawl
Answer:
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Date: Hour No.:
Global Warming, Covering Its Causes, Effects, And Prevention:
1. What are the primary human activities contributing to global warming?
2. How does the burning of fossil fuels lead to global warming?
3. What role do greenhouse gases play in global warming?
4. What are some natural causes of global warming?
5. How does global warming affect sea levels?
6. What impact does global warming have on weather patterns?
7. How can reforestation help mitigate global warming?
8. What are the potential effects of global warming on biodiversity?
9. How can reducing energy consumption help prevent global warming?
10. What international agreements aim to combat global warming?
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