Upwelling is observed to occur in which of the following regions? S points) Gulf

Question

Upwelling is observed to occur in which of the following regions? S points) Gulf Stream b) Along the east coast of continents ) Within the subtropics at the center of gyres long the equator 7. Which of the following reasons is why Wegener's Continental Drif" hypothesis was significantly challenged by the scientific community in the early to (3 points) a) Wegener was unable to show how the continents initially formed a single continent egener was unable to provide a scientifically sound mechanism explaining why the continents drifted c) Wegener was unable to show evidence for matching fossils between present-day continents d) Wegener accidently left his scientific paper on continental drift on a train, and his work was never to be found again. 8. How much salt is in a sample of 300 g of ocean water with a concentration of 28%? (5 points) 300a 29 a) 0.0107k b) 8.4 x 10 kg c) 10.7g d) 84 g 9. In which region(s) of the ocean does deep water form near the surface and sink to the deep ocean, playing a key role in the thermohaline circulation? Note that there may be 5 points) more than one correct response! -a) Mediterranean Sea b) North Atlantic Ocean c) Western Pacific Ocean d) Weddell Sea 10. Which of the following biological pump components below plays a role in increasing nutrient concentrations in the near-surface ocean layer? Note that there may be more than one correct response! (5 points) a) River runoff near river deltas b) Downwelling c) Photosynthesis d) Upwelling

Explanation / Answer

6. Upwelling is observed to occur (d) along the equator.

7. Wegner's theory was challenged because:

(b) Wegner was unable to provide a scientifically sound mechanism explaining why the continents drifted.

8. Concentration is 28 parts per thousand.

1 Litre/ 1000 Milli-litres of seawater contains 28 grams of salt.

1000 gm= 1 Litre water

Thus, 300 gm = (1/1000)*300 water = 0.3 litres of water.

Again, 1 Litre of water contains 28 gm salt.

So, 0.3 Litre of water contains 0.3*28 gm salt = 8.4 gm of salt = 8.4 * 10-3 Kg salt

(since we know that 1 Kg = 1000 gm or 1 gm = 10-3 Kg).

9. Deep water forms near the surface and sinks to the deep oceans, thus originating thermohaline circulation in the following regions:

(b) North Atlantic Ocean

(d) Weddell Sea

10. (d) Upwelling is the biological pump component which plays a key role in increasing the nutrient concentration in the near-surface ocean layer.

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