Ocean Temperature and Salinity Dynamics

The video tutorial covers the temperature and salinity of ocean water. It explains how ocean water temperature is influenced by solar energy and ocean currents, and how it varies horizontally and vertically. The tutorial also discusses the salinity of ocean water, its causes, and the factors affecting it. It highlights the differences in salinity across various regions, including open oceans and enclosed seas, and explains how salinity is represented on maps using isohalines.

What is the primary source of heat for ocean water temperature?

• Tidal forces

• Volcanic activity

• Solar energy

• Geothermal vents

Which region has the highest mean annual temperature of ocean water surface?

• Tropical region

• Equatorial region

• Polar region

• Temperate region

At what depth does the ocean water temperature reach approximately 15°C?

• 100m

• 500m

• 200m

• 1000m

What is the average salinity of ocean water expressed as parts per 1000?

• 40 per 1000

• 35 per 1000

• 30 per 1000

• 25 per 1000

Which factor does NOT influence the salinity of ocean water?

• Supply of fresh water

• Ocean currents

• Rainfall

• Rate of evaporation

In which region is the mean salinity of open oceans the highest?

• Polar region

• Equatorial region

• Temperate region

• Tropical region

Which sea has the highest salinity among the listed options?

• Mediterranean Sea

• Dead Sea

• Red Sea

• Baltic Sea

What is the mean salinity of the Baltic Sea?

• 41 per 1000

• 39 per 1000

• 31 per 1000

• 7 per 1000

What are lines joining places of equal salinity on a map called?

• Isotherms

• Isohalines

• Isotopes

• Isobars

Which factor contributes to the high salinity of the Dead Sea?

• High solar energy

• High rainfall

• High ocean currents

• High river inflow