Weeks 6, 7, and 8

I am done! This was my second Coursera class I’ve had and it was hard! I didn’t like most of the lectures, I just didn’t like the way the professor talked. But, I did learn a lot about all kinds of marine mammals. Here are some of the things I learned in weeks 6, 7 and 8 (the last week.) These are just some of the questions on the test, not all of them.

Week 6-

Which of the following best describes the effects of upwelling and convergent fronts on phytoplankton? Upwelling supports the growth of phytoplankton while convergent fronts aggregate phytoplankton.

Surface waters are often nutrient limited while deeper waters are usually more nutrient rich. True.

Marine megafauna can be used for oceanographic in situ sampling. True.

Which of the following submarines traveled to the bottom of the deepest part of the Mariana Trench? DeepSea Challenger.

What stage of a whale fall succession can persist for up to 100 years? Sulphophilic.

Week 7-

Which of the following options are an example of a marine species that went extinct rapidly due to direct effects of human actions? Select the two best options. Great auk, Dodo.

Which of the following individuals is NOT an example of a terrestrial natural philosopher? Rachel Carson.

Sound frequencies greater than 20,000 Hz are: Ultrasonic.

Sea turtles hear best at what range of sound? 200 – 750 Hz.

What was one solution implemented to successfully reduce the bycatch of harbor porpoises in the North Atlantic Closed areas with high harbor porpoise bycatch rates.

Echolocation sounds of Blainville’s beaked whales give information regarding where the whale is foraging and the distance from the seafloor. True.

Week 8-

After 1850, which whale species was rarely observed in the North Pacific? Sperm whales.

A map of all observations of the five species of whales shows that right whales were mostly seen in what area? High latitudes.

What factor is important for the successful breeding of Emperor penguins? Fast ice.

The International Whaling Commission (IWC) has limited power to enforce a total moratorium on commercial whaling. True.

Which of the following options describe the blue whale unit? It is a management unit established to control whale harvest.

Which of these practices predates commercial whaling? Arctic aboriginal whaling.

What is the oldest known practice of commercial whaling? Basque whaling.

What effect does a permanent threshold shift have on marine animal hearing? The marine animal becomes insensitive to the specific frequency bands to which it was exposed.

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