Science Subject: Question With Answer

Question:Whatistheprocessbywhichplantsconvertsunlightintochemicalenergy?Answer:Theprocessbywhichplantsconvertsunlightintochemicalenergyiscalledphotosynthesis.Question:Whatisthelawofconservationofenergy?Answer:Thelawofconservationofenergystatesthatenergycannotbecreatedordestroyedbutcanonlybetransformedfromoneformtoanotherortransferredbetweenobjects.Question:Whatarethethreestatesofmatter?Answer:Thethreestatesofmatteraresolid,liquid,andgas.Question:Whatisthedifferencebetweenspeedandvelocity?Answer:Speedisascalarquantitythatreferstohowfastanobjectismoving,whilevelocityisavectorquantitythatreferstothespeedofanobjectinaspecificdirection.Question:Whatisthefunctionofthenucleusinanatom?Answer:Thenucleusisthecentralpartofanatomthatcontainsprotonsandneutrons.Itsmainfunctionistoprovidestabilityanddeterminetheatomicmassoftheatom.Question:Whatisthegreenhouseeffect?Answer:ThegreenhouseeffectisanaturalprocessthatoccurswhencertaingasesintheEarth'satmospheretrapheatfromthesun,leadingtoawarmingeffectontheplanet.Question:Whatisthedifferencebetweenanacidandabase?Answer:Acidsaresubstancesthatreleasehydrogenions(H+)inasolution,whilebasesaresubstancesthatreleasehydroxideions(OH-)oraccepthydrogenionsinasolution.Question:Whatisthefunctionofredbloodcellsinthehumanbody?Answer:Redbloodcells,alsoknownaserythrocytes,carryoxygenfromthelungstothebody'stissuesandtransportcarbondioxidefromthetissuesbacktothelungsforremoval.Question:Whatistheprocessofcellularrespiration?Answer:Cellularrespirationistheprocessbywhichcellsconvertglucoseandoxygenintoenergy,carbondioxide,andwater.Itoccursinthemitochondriaofcellsandisessentialforthereleaseofenergyrequiredforvariouscellularactivities.Question:Whatisthedifferencebetweenaphysicalchangeandachemicalchange?Answer:Aphysicalchangereferstoachangeinthephysicalpropertiesofasubstance,suchasitsshape,size,orstateofmatter,withoutalteringitschemicalcomposition.Ontheotherhand,achemicalchangeinvolvesatransformationofsubstancesintodifferentsubstanceswithnewchemicalproperties.