GRADE 5 ESTUARIES
Quiz by MARIE EMILY FERNANDEZ
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20 questions
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- Q1What is an estuary?A large body of saltwater that is partially enclosed by land.A submerged coastal body of water where freshwater from rivers mixes with saltwater from oceans.A long, narrow body of water that connects larger bodies of water.A small, shallow body of water where saltwater from oceans mixes with freshwater from rivers.30s
- Q2What is the primary source of freshwater in estuaries?Rainfall and surface runoff.
Rivers and streams
A large body of saltwater that is partially enclosed by land.Groundwater.30s - Q3Why are estuaries important ecosystems?To serve as a source of drinking water.To support diverse plant and animal species.To offer recreational activities for humans.To provide a habitat for marine mammals.30s
- Q4Which of the following is a characteristic feature of estuaries?A deep, open ocean with high salinity.A mixture of saltwater and freshwater.A densely populated urban area.A mountainous region with freshwater lakes.30s
- Q5Which of the following is a threat to estuaries?Increased tidal range.Reduced ocean currents.Pollution from human activities.Excessive rainfall.30s
- Q6What is one example of a plant species commonly found in estuaries?Redwood trees.Palm trees.Sunflowers.Saltmarsh cordgrass.30s
- Q7What is a primary function of seagrass in estuarine ecosystems?Filtering pollutants from the water.Providing habitat and food for many species.Preventing erosion of the shoreline.Regulating the water temperature.30s
- Q8What is an example of a common estuarine organism?Bald eaglePolar bearBlue crabGrizzly bear30s
- Q9What is the primary source of freshwater for estuaries?LakesOceansRiversGlaciers30s
- Q10What is the main cause of estuary formation?Glacial movement.Earthquakes.Volcanic activity.The erosion and flooding of riverbanks.30s
- Q11What is one benefit of estuaries for humans?They provide recreational and economic opportunities.They provide a habitat for endangered species.They serve as barriers against coastal storms.They regulate the Earth's climate.30s
- Q12What is the name for the area where freshwater from rivers mixes with saltwater from the ocean?LagoonFjordDeltaEstuary30s
- Q13Which of the following best describes an intertidal zone?A zone found in deep sea trenchesAn area that is covered by water at high tide and exposed at low tideAn area located in the middle of the oceanA region below the ocean floor30s
- Q14What is the main factor that determines the organisms found in intertidal zones?Temperature fluctuations throughout the dayUnderwater currents and tidesExposure to air and water during tidal cyclesAvailability of sunlight30s
- Q15What is the primary source of energy for organisms in intertidal zones?SeaweedTidal energySunlightSediment nutrients30s
