Question

instructions: use the graph below to answer the questions about sea surface temperatures and salinities.

1. what does the latitude of 0° (the middle of the graph) represent? if it is the highest temperature why does it not have the highest salinity? refer to your notes to help you.
2. 60°s and 60°w (shown as -60 and +60 on this graph) occur at the lower ends of the polar regions. what two factors of this region result in a lowered salinity?

the following regions are known for having very high turbidity — but why? using your ipad, choose 3 of the 6 locations listed
instructions: amazon river estuary bay of bengal caspian sea north sea gulf of carpentaria near glacial outlets

Explanation:

1. The latitude of 0° represents the equator. It has high temperature but not highest salinity because there is high - volume precipitation near the equator which dilutes the seawater, reducing salinity despite high evaporation rates.
2. In the polar regions (60°S and 60°N), two factors lowering salinity are: 1) Melting of ice which adds fresh water to the sea. 2) Low evaporation rates due to cold temperatures, so there is less concentration of salts. Regarding high - turbidity regions, for example, the Amazon River Estuary has high turbidity because the Amazon River carries large amounts of sediment into the sea.

Answer:

1. The latitude of 0° represents the equator. It doesn't have the highest salinity due to high precipitation diluting the water.
2. Melting ice and low evaporation rates lower salinity in polar regions. For high - turbidity regions like the Amazon River Estuary, it's due to large sediment loads from the river.