Which term describes the warming caused by heat trapped in Earth’s atmosphere by gases?Greenhouse effectWater cycleAir circulationSolar radiationA) Greenhouse effectThe greenhouse effect occurs when gases like CO₂ trap heat in the atmosphere, warming the Earth.
Which environmental change results in the loss of coastal land due to rising sea levels?Soil erosionCoastal floodingDesert expansionGlacier formationB) Coastal floodingRising sea levels cause seawater to inundate coastal areas, leading to flooding and land loss.
Which action can help reduce greenhouse gas emissions at the household level?Increasing electricity useUsing energy-efficient appliancesBurning wasteOverusing vehiclesB) Using energy-efficient appliancesEnergy-efficient appliances consume less power, reducing emissions from electricity generation.
Which term refers to the shift in weather patterns over a long period due to natural and human factors?Weather forecastingClimate changeAir pressureWind flowB) Climate changeClimate change involves long-term alterations in temperature, precipitation, and other atmospheric conditions.
Which human activity increases carbon emissions by clearing forests for other uses?ReforestationAfforestationDeforestationIrrigationC) DeforestationCutting down forests reduces carbon absorption and increases greenhouse gas levels.
Which renewable source depends on Earth’s internal heat?Solar energyWind energy) Geothermal energyHydropowerC) Geothermal energyGeothermal energy uses heat from within the Earth to produce energy.
Which factor leads to the loss of biodiversity due to changing climate conditions?Stable temperaturesHabitat destructionReduced rainfall variabilityIncreased oxygen levelsB) Habitat destructionClimate change alters ecosystems and destroys habitats, leading to loss of biodiversity.
Which process increases sea levels by adding water from melting land ice?EvaporationPrecipitationGlacial meltingCondensationC) Glacial meltingMelting glaciers and ice sheets add water to oceans, raising sea levels.
Which solution helps reduce carbon emissions by using natural processes?Burning coalAfforestationOil drillingPlastic productionB) AfforestationPlanting trees absorbs carbon dioxide from the atmosphere, reducing emissions.
Which term refers to the increase in Earth’s temperature due to human-made greenhouse gases?Climate shiftGlobal warmingWeather variationAtmospheric coolingB) Global warmingGlobal warming is caused by increased greenhouse gases from human activities like burning fossil fuels.
Which environmental strategy involves reducing emissions by switching to renewable energy sources?AdaptationMitigationIndustrializationUrbanizationB) MitigationMitigation focuses on reducing greenhouse gas emissions, such as using solar or wind energy.
Which activity contributes most to carbon emissions in daily life?WalkingCyclingDriving fuel-powered vehiclesUsing hand toolsC) Driving fuel-powered vehiclesVehicles running on fossil fuels emit significant amounts of carbon dioxide.
Which phenomenon occurs when warmer air holds more moisture, leading to heavier rainfall events?EvaporationAtmospheric loadingIntensified hydrological cycleAir pressure dropC) Intensified hydrological cycleWarmer temperatures increase evaporation and moisture in the air, causing more intense rainfall.
Which region is most vulnerable to climate change due to rising sea levels?Mountain regionsCoastal areasDesertsPlateausB) Coastal areasCoastal areas are at higher risk of flooding and erosion due to rising sea levels.
Which gas is emitted from melting permafrost and significantly accelerates global warming? OxygenMethaneNitrogenHeliumB) MethanePermafrost thaw releases methane, a potent greenhouse gas that accelerates warming.
Which term refers to the increase in average global sea level over time?Ocean driftSea level riseWater cycleCoastal erosionB) Sea level riseSea level rise occurs due to melting ice sheets and thermal expansion of seawater.
Which gas is commonly known as “laughing gas” and also contributes to global warming?Carbon monoxideNitrous oxideSulfur dioxideMethaneB) Nitrous oxideNitrous oxide (N₂O) is a greenhouse gas released mainly from agricultural activities.
Which type of climate action focuses on reducing emissions at the source?Carbon monoxideMigrationMitigationRestorationB) MitigationMitigation involves efforts to reduce or prevent greenhouse gas emissions.
Which process removes carbon dioxide from the atmosphere through technological methods?PhotosynthesisCarbon capture and storageRespirationCombustionB) Carbon capture and storageCarbon capture and storage (CCS) captures CO₂ emissions from sources and stores them underground to reduce atmospheric levels.
Which factor contributes most to the melting of Arctic sea ice?Decreased sunlightRising air and ocean temperaturesIncreased snowfallReduced wind speedB) Rising air and ocean temperaturesWarmer temperatures accelerate the melting of sea ice in polar regions.
Which term refers to the natural circulation of carbon among the atmosphere, oceans, soil, and living organisms?Nitrogen cycleCarbon cycleWater cycleOxygen cycleB) Carbon cycleThe carbon cycle describes how carbon moves through Earth’s systems and maintains balance.
Which term refers to the gradual increase in Earth’s temperature due to human activities?Climate variabilityGlobal warmingWeather changeAtmospheric pressureB) Global warmingGlobal warming is the long-term rise in Earth’s average temperature mainly due to greenhouse gas emissions.
Which natural event can release large amounts of carbon dioxide into the atmosphere?EarthquakesVolcanic eruptionsFloodsLandslidesB) Volcanic eruptionsVolcanic eruptions emit gases including carbon dioxide, contributing to atmospheric greenhouse gases.
Which practice helps conserve water and reduce climate impact in agriculture?Flood irrigationDrip irrigationOvergrazingDeforestationB) Drip irrigationDrip irrigation delivers water directly to plant roots, reducing waste and improving efficiency.
Which process in oceans helps store carbon by transporting it from the surface to deep waters?Water cycleCarbon pumpingOcean mixingThermal layeringB) Carbon pumpingThe biological carbon pump moves carbon from the ocean surface to deeper layers, storing it for long periods.
Which factor is primarily responsible for heat being trapped in urban areas more than rural areas?High vegetationConcrete and asphalt surfacesLower populationReduced pollutionB) Concrete and asphalt surfacesUrban materials absorb and retain heat, causing the urban heat island effect.
Which international goal focuses on taking urgent action to combat climate change?SDG 3SDG 7SDG 11SDG 13: D) SDG 13Sustainable Development Goal 13 is dedicated to climate action and addressing climate change impacts.
Which process increases atmospheric carbon dioxide through the breakdown of organic matter?PhotosynthesisRespirationCondensationFiltrationB) RespirationDuring respiration, living organisms break down organic matter and release carbon dioxide into the atmosphere.
Which climate-related term refers to sudden and irreversible changes in the environment?Climate stabilityTipping pointCarbon cycleWeatheringB) Tipping pointA climate tipping point is a critical threshold beyond which changes become rapid and irreversible.
Which energy source is generated from organic materials like plant and animal waste?Nuclear energyBiomass energyWind energySolar energyB) Biomass energyBiomass energy is produced by burning or processing organic materials such as agricultural waste.
Which phenomenon occurs when fertile land becomes less productive due to climate change and human activities?UrbanizationDesertificationIndustrializationGlaciationB) DesertificationDesertification happens when fertile land becomes dry and less productive due to drought, deforestation, and poor land use.
Which natural process removes carbon dioxide from the atmosphere and stores it in plants?RespirationPhotosynthesisCombustionEvaporationB) PhotosynthesisPlants absorb carbon dioxide during photosynthesis and convert it into energy while releasing oxygen.
Which renewable energy source uses sunlight to generate electricity?Biomass energySolar energyHydropowerGeothermal energyB) Solar energySolar panels convert sunlight directly into electricity using photovoltaic cells.
Which type of energy comes from heat stored beneath the Earth’s surface?Solar energyWind energyGeothermal energyTidal energyC) Geothermal energyGeothermal energy uses heat from inside the Earth to generate electricity or provide heating.
What is the main environmental impact of excessive use of fossil fuels?Increased oxygen levelsDecrease in sea levelsIncrease in greenhouse gas emissionsReduced atmospheric pressureC) Increase in greenhouse gas emissionsBurning fossil fuels releases greenhouse gases like carbon dioxide, contributing to climate change.
Which international day is observed to raise awareness about protecting the environment and climate?World Water DayEarth DayWorld Health DayInternational Literacy DayB) Earth DayEarth Day is celebrated on April 22 each year to promote environmental protection and climate awareness.
Which phenomenon causes sea levels to rise as ocean water expands when heated?Thermal expansionOcean salinityWater evaporationIce sedimentationA) Thermal expansionThermal expansion occurs when ocean water warms and expands, contributing to rising sea levels.
Which gas is released in large quantities when forests are burned?HeliumCarbon dioxideNeonHydrogenB) Carbon dioxideBurning forests releases stored carbon in the form of carbon dioxide into the atmosphere.
Which strategy focuses on preparing communities for the effects of climate change?Climate mitigationClimate adaptationIndustrializationFossil fuel expansionB) Climate adaptationClimate adaptation involves adjusting systems and communities to reduce damage from climate impacts.
Which term describes the reflection of sunlight back into space by Earth’s surface or atmosphere?AlbedoRadiationConductionConvectionA) AlbedoAlbedo refers to the reflectivity of a surface; ice and snow have high albedo and reflect much of the Sun’s energy.
Which type of fuel is considered the cleanest fossil fuel in terms of carbon emissions?CoalOilNatural GasPeatC) Natural GasNatural gas produces less carbon dioxide compared to coal and oil when burned.
Which climate change impact increases the frequency of coastal flooding?Rising sea levelsDecreasing rainfallFalling temperaturesIncreased snowfallA) Rising sea levelsAs sea levels rise due to melting ice and thermal expansion, coastal areas face more frequent flooding.
Which phenomenon refers to the warming of ocean waters due to climate change?Ocean salinityOcean warmingOcean circulationOcean evaporationB) Ocean warmingOcean warming occurs when oceans absorb excess heat from the atmosphere, affecting marine life and weather patterns.
Which type of farming helps reduce greenhouse gas emissions by improving soil carbon storage?Intensive farmingRegenerative agricultureIndustrial farmingMonoculture farmingB) Regenerative agricultureRegenerative agriculture improves soil health and increases carbon storage, helping reduce climate change impacts.
What is the main environmental effect of permafrost thawing?Increased rainfallRelease of stored greenhouse gasesFormation of new glaciersDecrease in sea levelB) Release of stored greenhouse gasesThawing permafrost releases methane and carbon dioxide trapped in frozen soil, accelerating climate change.
Which layer of Earth’s system stores the largest amount of carbon?AtmosphereOceans) SoilBiosphereB) OceansOceans store the largest amount of carbon, absorbing carbon dioxide from the atmosphere and regulating climate.
What is the main cause of glacier retreat around the world?Increased rainfallRising global temperaturesOcean tidesSoil erosionB) Rising global temperaturesHigher global temperatures cause glaciers to melt faster than they can reform.
Which practice reduces greenhouse gas emissions by using waste materials to produce energy?Biomass energyCoal burningOil refiningPlastic manufacturingA) Biomass energyBiomass energy converts organic waste into energy, reducing reliance on fossil fuels.
Which gas is produced in large amounts by rice paddies and wetlands?OxygenMethaneNitrogenHydrogenB) MethaneRice paddies and wetlands create conditions where bacteria produce methane, a powerful greenhouse gas.
Which concept refers to balancing the amount of greenhouse gases emitted with the amount removed from the atmosphere?Carbon neutralityCarbon leakageCarbon storageCarbon tradingA) Carbon neutralityCarbon neutrality means achieving net-zero carbon emissions by balancing emissions with removal efforts.
Which natural carbon sink absorbs large amounts of carbon dioxide from the atmosphere?OceansMountainsDesertsVolcanoesA) OceansOceans absorb a significant portion of carbon dioxide from the atmosphere, helping regulate Earth’s climate.
Which term refers to planting trees in areas where there were no forests previously?ReforestationAfforestationDeforestationDesertificationB) AfforestationAfforestation is the process of planting trees in previously non-forested areas to increase forest cover and absorb carbon dioxide.
Which ocean current plays a major role in regulating global climate?Humboldt CurrentGulf StreamCanary CurrentBenguela CurrentB) Gulf StreamThe Gulf Stream carries warm water from the Gulf of Mexico to the North Atlantic, influencing the climate of surrounding regions.
What is the term for fertile land turning into desert due to climate change and human activities?DesertificationUrbanizationAcidificationSalinizationA) DesertificationDesertification occurs when productive land becomes dry and infertile due to climate change, deforestation, and poor land management.
Which human activity contributes most to rising global sea levels?OverfishingMelting of glaciers and ice sheetsMining operationsRoad constructionB) Melting of glaciers and ice sheetsRising global temperatures cause glaciers and polar ice sheets to melt, adding more water to oceans and increasing sea levels.
What is the term for cutting down forests without replanting them?AfforestationReforestationDeforestationUrbanizationC) DeforestationDeforestation reduces the number of trees that absorb carbon dioxide, increasing greenhouse gases in the atmosphere.
Which sector is a major source of nitrous oxide emissions?Information technologyAgricultureTourismBankingB) AgricultureAgricultural activities, especially the use of nitrogen-based fertilizers, release nitrous oxide into the atmosphere.
Which process releases carbon dioxide when fossil fuels are burned?CondensationCombustionPhotosynthesisTranspirationB) CombustionCombustion of fossil fuels like coal, oil, and gas releases carbon dioxide into the atmosphere.
What is the major impact of climate change on agriculture?Increased soil fertility everywhereStable crop productionReduced crop yields due to extreme weatherElimination of pestsC) Reduced crop yields due to extreme weatherC) Reduced crop yields due to extreme weatherExtreme temperatures, droughts, and floods negatively affect crop production.
Which renewable energy source generates electricity using flowing water?Wind energySolar powerHydropowerBiomassC) HydropowerHydropower uses the movement of flowing or falling water to generate electricity.
Which international organization provides scientific assessments on climate change?WHOIMFIPCCWTOC) IPCCThe Intergovernmental Panel on Climate Change (IPCC) assesses scientific information related to climate change.
What is the primary source of energy in the Earth’s climate system?MoonSunVolcanoesOcean currentsB) SunThe Sun provides the energy that drives Earth’s climate and weather systems.
Which practice helps reduce urban heat island effect?Increasing concrete surfacesCutting down treesInstalling green roofsExpanding highwaysC) Installing green roofsGreen roofs reduce heat absorption and help cool urban environments.
Which factor primarily increases the intensity of tropical storms?Cold ocean waterWarm ocean surface temperaturesDecreased humidityReduced wind speedB) Warm ocean surface temperaturesWarmer ocean waters provide more energy to tropical storms, increasing their intensity.
What is the main purpose of reforestation?Expand urban areasIncrease mining activitiesRestore forest cover and absorb CO₂Promote industrial growthC) Restore forest cover and absorb CO₂Reforestation helps combat climate change by restoring forests that absorb carbon dioxide.
Which gas is mainly responsible for the depletion of the ozone layer?Carbon DioxideMethaneChlorofluorocarbons (CFCs)NitrogenC) Chlorofluorocarbons (CFCs)CFCs break down ozone molecules in the stratosphere, leading to ozone layer depletion.
Which term describes the warming of Earth due to trapped heat by greenhouse gases?Ozone depletionGlobal warmingAcidificationDesertificationB) Global warmingGlobal warming refers to the rise in Earth’s average temperature due to increased greenhouse gases.
Which ecosystem is most effective in storing large amounts of carbon?DesertsTundraForestsGrasslandsC) ForestsForests act as major carbon sinks by absorbing carbon dioxide through photosynthesis and storing it in biomass.
What is climate adaptation?Reducing fossil fuel useAdjusting to the impacts of climate changeIncreasing carbon emissionsExpanding industrializationB) Adjusting to the impacts of climate changeClimate adaptation involves making changes to reduce vulnerability to the effects of climate change.
Which gas is primarily responsible for trapping heat in Earth’s atmosphere through the greenhouse effect?HydrogenOxygenCarbon DioxideNeonC) Carbon DioxideCarbon dioxide traps heat in the atmosphere, contributing significantly to the greenhouse effect and global warming.
What is the main purpose of carbon trading systems?Increase fossil fuel usageEncourage reduction of greenhouse gas emissionsPromote deforestationBan renewable energyB) Encourage reduction of greenhouse gas emissionsCarbon trading allows companies to buy and sell emission allowances to reduce overall greenhouse gas output.
Which natural event can temporarily cool the Earth’s climate by releasing particles into the atmosphere?EarthquakesVolcanic eruptionsTsunamisTornadoesB) Volcanic eruptionsLarge volcanic eruptions release ash and sulfur dioxide that reflect sunlight, temporarily lowering global temperatures.
Which term describes the ability of forests to absorb carbon dioxide from the atmosphere?Carbon EmissionCarbon LeakageCarbon SequestrationCarbon TradingC) Carbon SequestrationCarbon sequestration is the process by which trees and plants absorb and store carbon dioxide from the atmosphere.
Which country emits the highest total amount of carbon dioxide globally?GermanyCanadaChinaBrazilC) ChinaChina is currently the largest emitter of carbon dioxide due to its large population and industrial activities.
What is the main objective of climate mitigation strategies?Adapt to sea-level riseReduce greenhouse gas emissionsIncrease fossil fuel productionExpand urban areasB) Reduce greenhouse gas emissionsClimate mitigation focuses on reducing or preventing the emission of greenhouse gases to limit global warming.
What phenomenon causes more extreme weather events like hurricanes and heatwaves?Ozone depletionGlobal warmingAcid rainDeforestationB) Global warmingGlobal warming increases Earth's average temperature, leading to more frequent and severe extreme weather events.
Which human activity is the leading cause of deforestation contributing to climate change?Industrial miningAgriculture expansionUrban gardeningEco-tourismB) Agriculture expansionClearing forests for agriculture reduces carbon sequestration and increases greenhouse gas emissions.
What is the primary effect of rising sea surface temperatures?Formation of glaciersCoral bleachingIncreased rainfall in desertsReduction in atmospheric CO₂B) Coral bleachingWarmer ocean temperatures stress coral reefs, causing them to lose their color and vital symbiotic algae.
Which layer of the atmosphere contains the ozone layer that protects Earth from harmful UV radiation?TroposphereStratosphereMesosphereThermosphereB) StratosphereThe ozone layer is located in the stratosphere and absorbs most of the Sun’s harmful ultraviolet radiation.
What is the primary cause of ocean acidification?Plastic pollutionOil spillsIncreased carbon dioxide absorptionOverfishing: C) Increased carbon dioxide absorptionOceans absorb excess CO₂ from the atmosphere, which forms carbonic acid and lowers ocean pH.
What does “carbon footprint” refer to?Amount of oxygen used by plantsTotal greenhouse gas emissions caused by an individual or activityNumber of trees in a forestHeat produced by the SunB) Total greenhouse gas emissions caused by an individual or activityA carbon footprint measures the total emissions of greenhouse gases produced directly or indirectly.
Which gas has the highest global warming potential over a 100-year period?Carbon DioxideMethaneNitrous OxideSulfur HexafluorideD) Sulfur HexafluorideSulfur hexafluoride (SF₆) has an extremely high global warming potential compared to other greenhouse gases.
What is the process by which plants absorb carbon dioxide from the atmosphere?RespirationPhotosynthesisEvaporationCombustionB) PhotosynthesisDuring photosynthesis, plants absorb carbon dioxide and convert it into oxygen and glucose using sunlight.
Which renewable energy source uses moving air to generate electricity?Solar PowerHydropowerWind EnergyGeothermal EnergyC) Wind EnergyWind turbines convert the kinetic energy of moving air into electrical energy.
What is the main greenhouse gas responsible for global warming?OxygenNitrogenCarbon DioxideHeliumC) Carbon DioxideCarbon dioxide (CO₂) is the primary greenhouse gas released through human activities like burning fossil fuels.
Which international agreement aims to limit global temperature rise?Kyoto ProtocolMontreal ProtocolParis AgreementGeneva ConventionC) Paris AgreementThe Paris Agreement focuses on limiting global warming to well below 2°C above pre-industrial levels.
Which sector contributes the most to global greenhouse gas emissions?AgricultureTransportationEnergy ProductionTourismC) Energy ProductionThe energy sector, especially burning coal, oil, and gas for electricity and heat, is the largest contributor to emissions.
What effect does melting polar ice have on sea levels?Decreases sea levelNo impactRaises sea levelStops ocean currentsC) Raises sea levelMelting glaciers and polar ice add more water to oceans, causing sea levels to rise.
Which human activity is the largest source of methane emissions?Manufacturing plasticsLivestock farmingSolar power plantsRecycling wasteB) Livestock farmingLivestock release methane during digestion, making agriculture a major source of methane emissions.
What is the term for the long-term change in Earth’s average weather patterns?Weather ForecastingClimate ChangeAir Pollution) Ozone FormationB) Climate ChangeClimate change refers to significant and lasting changes in global or regional climate patterns.
