
Oceanography physical and chemical
Quiz by Sheena Hidalgo
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15 questions
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- Q1What is the primary gas dissolved in ocean water that affects its chemistry and supports marine life?Carbon dioxideNitrogenHydrogenOxygen30s
- Q2What pH range is typically considered as neutral in ocean water, indicating a balance between acidity and alkalinity?6 to 77 to 84 to 58 to 930s
- Q3Which nutrient is essential for the growth of phytoplankton and often limits their productivity in ocean waters?NitrogenPhosphorusIronSilica30s
- Q4What process describes the movement of ocean water caused by the gravitational pull of the moon and the sun?El Niño EffectThermal stratificationTidal actionUpwelling30s
- Q5What type of bond is primarily responsible for the unique properties of water, such as its high surface tension and boiling point?Van der Waals forcesCovalent bondHydrogen bondIonic bond30s
- Q6What is the primary mechanism by which surface ocean currents are generated?Earth's rotationWind actionThermal expansionTidal forces30s
- Q7Which chemical property of water allows it to dissolve a wide range of substances, making it known as the 'universal solvent'?DensityNonpolarityPolarityViscosity30s
- Q8What is the process called when seawater undergoes evaporation, leaving salts behind?SublimationMeltingCondensationEvaporation30s
- Q9What is the primary factor that drives ocean currents on a large scale?GravityWindSalinityTemperature30s
- Q10Which phenomenon describes the periodic rise and fall of water levels in the oceans, primarily caused by the gravitational forces exerted by the Moon and the Sun?WavesThermoclineTidesCurrents30s
- Q11What is the main source of nutrients that supports the productivity of marine ecosystems in the euphotic zone?ThermoclineUpwellingSedimentationDownwelling30s
- Q12Which layer of the ocean is typically characterized by temperatures near freezing and contains the majority of the world's ocean water?Mesopelagic zoneThermoclineEpipelagic zoneDeep ocean30s
- Q13What is the primary cause of the salty nature of seawater?Salt evaporationPhotosynthesisVolcanic activityWeathering of rocks30s
- Q14What is the primary gas responsible for ocean acidification as a result of increased atmospheric levels?Carbon dioxideMethaneOxygenNitrogen30s
- Q15Which layer of the ocean is characterized by the temperature decrease with depth, typically found between 200 meters and 1000 meters?HypolimnionThermoclineBenthic zoneEpipelagic zone30s