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.
