Ocean Composition

What 3 ways does salinity DECREASE?

1.) Fresh water, such as a river, flowing into the ocean; river runoff, & precipitation (rain). 2.) Colder climates 3.) Glaciers MELTING adding freshwater to the oceans.

What 3 ways does salinity INCREASE in the oceans?

1.) hotter, tropical, drier climates 2.) high evaporation rates 3.) glaciers FORMING

Colder water has ___________________ density?

HIGHER

Warmer water has ___________________ density?

LOWER

Why does the Dead Sea have such high salinity?

Mainly due to the higher evaporation rate but also due to it mostly being landlocked

How does ocean water differ from freshwater?

Ocean water has a higher salinity than freshwater.

What are the 2 most abundant chemicals in ocean water?

Sodium and Chlorine

What is salinity?

a measure of the amount of dissolved solids in a given amount of liquid

What affects salinity?

climate & slow moving waters

Salt makes seawater more____________________ than freshwater?

dense

Oceans with higher salinity also have higher_____?

density

What adds salt to oceans?

underwater volcanoes & weathering/erosion of rocks

Where does salt come from?

weathering and erosion of rocks rain and dissolved salts and minerals that are deposited in the ocean