Part 3: Oceanography and the real world [10 points each, 20…
Questions
Pаrt 3: Oceаnоgrаphy and the real wоrld [10 pоints each, 20 points total]Answer TWO of the following questions. Not all four of them, please. Just two! (1) If you take a boat ride off the coast of Santa Barbara, CA and travel for about 90 minutes, you will reach the Channel Islands National Park. For the first roughly 45 minutes of the boat ride, you are in relatively shallow water (~100 feet.) Suddenly, the continental shelf abruptly drops off, and the water suddenly gets much deeper (more than 1000 feet.) A diagram illustrating this is shown below. I have done this boat trip several times. In the first 45 minutes of the boat ride, I generally see very little marine wildlife. However, it seems like as soon as the boat passes the dropoff of the continental shelf, you are much more likely to spot dolphins and whales. Using your knowledge of ocean processes, propose an idea for why marine mammal sightings are more common in the part of the ocean where the water suddenly gets deeper than for the first 45 minutes of the boat ride where the water is shallow. You may use a diagram to support your written answer if you want, but it isn't required. (2) You have learned about a variety of topics related to the impact of humans on living things in the ocean. Choose 2 of the following case studies and summarize what you’ve learned about them during class. Your summaries should be scientifically accurate and specific, based on class discussions. Ocean acidification's impact on marine life; Chemotherapeutic agents that come from the ocean; Seastar wasting disease; The link between warming oceans and marine neurotoxins (4) Scientists are very interested in icebergs (ice sheets in the water) because the formation and destruction of ice can influence global climate. Using appropriate vocabulary, explain why icebergs float. You may include a labeled sketch to support your answer, but you must include a written explanation. Briefly explain how the formation and destruction of ice influences salinity. Based on what you know about ocean circulation, propose a hypothesis about how melting icebergs could have an influence on ocean circulation and global climate.
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