GEOLOGY

Detailed explanation-1: -The warmer the water, the more space it takes up, and the lower its density. When comparing two samples of water with the same salinity, or mass, the water sample with the higher temperature will have a greater volume, and it will therefore be less dense.

Detailed explanation-2: -Water that has higher salinity will be denser. Pressure is another factor that affects density. Pressure increases with depth; this can be felt when a swimmer goes underwater and has to relieve ear pressure at certain levels. As pressure increases with depth, so does the density of a water mass.

Detailed explanation-3: -Increases in temperatures of surrounding entities like ice and an increase in precipitation adds fresh water into the sea, which lower salinity. Seawater with lower salinity is lighter in density and won’t sink as much as denser water. This process changes ocean currents.

Detailed explanation-4: -Currents may also be caused by density differences in water masses due to temperature (thermo) and salinity (haline) variations via a process known as thermohaline circulation. These currents move water masses through the deep ocean, taking nutrients, oxygen, and heat with them.

Detailed explanation-5: -The density of seawater depends on temperature and salinity. Higher temperatures decrease the density of seawater, while higher salinity increases the density of seawater.