Podcast
Questions and Answers
What is the main reason for the variation in salinity levels in different regions?
What is the main reason for the variation in salinity levels in different regions?
- Changes in ocean currents and wind patterns
- Changes in the latitude belts and inland seas
- Changes in the rate of rainfall and sunlight
- Changes in the amount of evaporation and supply of fresh water (correct)
What is the effect of increased wind or sunlight on salinity levels?
What is the effect of increased wind or sunlight on salinity levels?
- Decreased salinity levels
- No change in salinity levels
- Variable salinity levels
- Increased salinity levels (correct)
Which of the following bodies of water has the highest salinity level?
Which of the following bodies of water has the highest salinity level?
- The Great Salt Lake
- The Dead Sea
- The Red Sea
- Don Juan Pond in Antarctica (correct)
Why can people easily float on the water in the Dead Sea?
Why can people easily float on the water in the Dead Sea?
What is the result of ocean currents mixing in the water column?
What is the result of ocean currents mixing in the water column?
What pattern is observed in the distribution of salinity levels across different latitude belts?
What pattern is observed in the distribution of salinity levels across different latitude belts?
Why is evaporating seawater to measure salinity not an accurate method?
Why is evaporating seawater to measure salinity not an accurate method?
What is the unit of measurement for salinity?
What is the unit of measurement for salinity?
What is the principle behind hydrometers?
What is the principle behind hydrometers?
Why are two readings needed when using a hydrometer to measure salinity?
Why are two readings needed when using a hydrometer to measure salinity?
What is the purpose of the conversion scale in hydrometer measurements?
What is the purpose of the conversion scale in hydrometer measurements?
What are the three types of meters that can be used to accurately measure salinity?
What are the three types of meters that can be used to accurately measure salinity?
What is the primary reason why water is called the universal solvent?
What is the primary reason why water is called the universal solvent?
What is the term for the process of salt dissolving in water?
What is the term for the process of salt dissolving in water?
Which of the following layers of the ocean is characterized by the highest salinity?
Which of the following layers of the ocean is characterized by the highest salinity?
What is the primary driver of thermohaline circulation in the ocean?
What is the primary driver of thermohaline circulation in the ocean?
What is the term for the range of saline waters from fresh to brine?
What is the term for the range of saline waters from fresh to brine?
Why do freshwater fish need to drink water actively?
Why do freshwater fish need to drink water actively?
What is the primary function of the kidneys in fish that live in both fresh and saltwater?
What is the primary function of the kidneys in fish that live in both fresh and saltwater?
What is the chemical symbol for Sodium?
What is the chemical symbol for Sodium?
What is the purpose of an estuary for some fish?
What is the purpose of an estuary for some fish?
What is the term used to describe the measure of salt dissolved in water?
What is the term used to describe the measure of salt dissolved in water?
Which instrument is used to measure the buoyancy of a liquid?
Which instrument is used to measure the buoyancy of a liquid?
What is the term for the separation of an ionically bonded molecule into two or more ions in solution?
What is the term for the separation of an ionically bonded molecule into two or more ions in solution?
Why do fish in seawater excrete excess salt via their gills and kidneys?
Why do fish in seawater excrete excess salt via their gills and kidneys?
What is the primary reason why fish in seawater do not need to drink water actively?
What is the primary reason why fish in seawater do not need to drink water actively?
What is the term for the concentration of dissolved salt in a given volume of water?
What is the term for the concentration of dissolved salt in a given volume of water?
What is the zone in the ocean where there is a large change in salinity with depth?
What is the zone in the ocean where there is a large change in salinity with depth?
What is the term for the ratio of density of a particular substance to that of water?
What is the term for the ratio of density of a particular substance to that of water?