Everyday Science

Greenhouse Effect & Global Warming MCQs With Answer

The greenhouse effect is caused by the trapping of:
a) Oxygen in the atmosphere
b) Sunlight in the ocean
c) Heat by greenhouse gases
d) Cold air in the polar regions

Answer
c) Heat by greenhouse gases

Which gas is the major contributor to the greenhouse effect?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Helium

Answer
c) Carbon dioxide

Which human activity is the largest source of carbon dioxide emissions?
a) Deforestation
b) Industrial waste disposal
c) Burning fossil fuels
d) Agricultural irrigation

Answer
c) Burning fossil fuels

Which greenhouse gas is released by livestock farming?
a) Methane
b) Oxygen
c) Carbon monoxide
d) Ozone

Answer
a) Methane

What is the main cause of global warming?
a) Increased volcanic activity
b) Natural changes in the Earth’s orbit
c) Human activities increasing greenhouse gases
d) Decrease in solar radiation

Answer
c) Human activities increasing greenhouse gases

Which layer of the atmosphere contains greenhouse gases?
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Thermosphere

Answer
a) Troposphere

Which gas has the highest global warming potential?
a) Carbon dioxide
b) Methane
c) Nitrous oxide
d) Fluorinated gases

Answer
d) Fluorinated gases

Which of the following is NOT a greenhouse gas?
a) Nitrogen
b) Carbon dioxide
c) Methane
d) Water vapor

Answer
a) Nitrogen

What is the primary effect of global warming?
a) Decreased sea levels
b) Increased agricultural productivity
c) Rising global temperatures
d) Expansion of polar ice caps

Answer
c) Rising global temperatures

Which international agreement aims to reduce greenhouse gas emissions?
a) Kyoto Protocol
b) NAFTA
c) Bretton Woods Agreement
d) Warsaw Pact

Answer
a) Kyoto Protocol

Which phenomenon results from global warming?
a) Increased snowfall
b) More frequent hurricanes
c) Expansion of deserts
d) Slower melting of glaciers

Answer
b) More frequent hurricanes

What is the main effect of ocean acidification caused by global warming?
a) Increased oxygen levels in water
b) Coral bleaching and marine life death
c) Decreased water temperature
d) Rapid growth of seaweed

Answer
b) Coral bleaching and marine life death

Which of these human actions helps reduce global warming?
a) Cutting down forests
b) Using fossil fuels
c) Planting more trees
d) Increasing industrial emissions

Answer
c) Planting more trees

Which of these is a renewable energy source that helps reduce global warming?
a) Coal
b) Natural gas
c) Solar energy
d) Petroleum

Answer
c) Solar energy

What effect does deforestation have on global warming?
a) Reduces CO₂ levels
b) Increases CO₂ levels
c) Has no effect on the atmosphere
d) Decreases oxygen levels but does not affect CO₂

Answer
b) Increases CO₂ levels

Which sector contributes the most to global warming?
a) Transportation
b) Agriculture
c) Energy production
d) Forestry

Answer
c) Energy production

Which gas contributes to both global warming and ozone depletion?
a) Carbon dioxide
b) Chlorofluorocarbons (CFCs)
c) Hydrogen sulfide
d) Nitrogen gas

Answer
b) Chlorofluorocarbons (CFCs)

How does global warming affect weather patterns?
a) More stable climates
b) Less extreme weather
c) Increased frequency of heatwaves and storms
d) Decrease in global temperatures

Answer
c) Increased frequency of heatwaves and storms

Which of these is an effect of melting ice caps due to global warming?
a) Decrease in global sea levels
b) Increase in global sea levels
c) More snowfall in polar regions
d) Less water evaporation

Answer
b) Increase in global sea levels

Which of these is a possible long-term consequence of global warming?
a) Expansion of tropical forests
b) Slower desertification
c) Mass extinction of species
d) Increased polar ice caps

Answer
c) Mass extinction of species

How does carbon capture technology help combat global warming?
a) Increases CO₂ emissions
b) Removes CO₂ from the atmosphere
c) Prevents the formation of ozone layer
d) Increases methane levels

Answer
b) Removes CO₂ from the atmosphere

Which human activity contributes the most to deforestation?
a) Hydroelectric power
b) Urbanization and agriculture
c) Wind power
d) Recycling efforts

Answer
b) Urbanization and agriculture

How does afforestation help reduce global warming?
a) Increases CO₂ levels
b) Absorbs CO₂ from the air
c) Releases methane
d) Generates more industrial waste

Answer
b) Absorbs CO₂ from the air

What is the purpose of the Paris Agreement?
a) Promote nuclear energy
b) Reduce global poverty
c) Combat climate change
d) Increase fossil fuel production

Answer
c) Combat climate change

Which renewable energy source is NOT derived from the sun?
a) Wind energy
b) Geothermal energy
c) Hydroelectric power
d) Solar energy

Answer
b) Geothermal energy

Which of these gases has the longest atmospheric lifetime?
a) Carbon dioxide
b) Methane
c) Nitrous oxide
d) Water vapor

Answer
a) Carbon dioxide

Which greenhouse gas is primarily produced from agricultural fertilizers?
a) Carbon dioxide
b) Methane
c) Nitrous oxide
d) Ozone

Answer
c) Nitrous oxide

How does ocean circulation impact global warming?
a) It has no effect
b) Helps distribute heat globally
c) Reduces CO₂ in the atmosphere
d) Increases greenhouse gas emissions

Answer
b) Helps distribute heat globally

What is the main reason for increased wildfires in recent years?
a) Increased rainfall
b) Higher global temperatures and dry conditions
c) Increased tree plantations
d) Reduction in fossil fuel use

Answer
b) Higher global temperatures and dry conditions

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