Marine science

Epipelagic zone ( photic zone )

Surface to 200 metres. Lots of light. Wide variation in temperature.

Mesopelagic zone

200 - 1000 metres deep. Greatest temperature change.

Bathypelagic zone

1000 - 4000 metres deep. Constant temperature and darkness. 

Abyssopelagic zone

4000 - 6000 metres deep. Near freezing and pitch black. Intense pressure from depth.

How does temperature affect solubility ?

Higher salinity as salt dissolves at a faster rate. Molecules move faster, ions are mixed into water. Easy for water molecules to break ionic bonds and surround leftover ions.

Salinity def

Measure of the concentration of dissolved salts in seawater ( parts per thousand )

As temp of seawater increases density…

Decreases

Where is the concentration of dissolved oxygen highest

Top 100 metres

Low salinity levels cause dissolved oxygen levels to…

Rise

High atmospheric pressure leads to …. dissolved oxygen level

High

Dissolved oxygen levels are … by lower temperatures

Increased

Effects of warming oceans

Weather changes.

Frozen methane melting. 

Organisms and population of ecosystem change ( food chains affected ).

Lower oxygen concentration.

Inhibit development of species due to disruption in cellular respiration.

Changes in migration patterns.