1. What are three obstacles to studying the seafloor? 2. The atmospheric pressure is about 1 kilogram per centimeter squared (14.7 pounds per
square inch or 1 atmosphere) at sea level. About what is the pressure if you are 100
meters deep in the ocean?
3. What invention gave people the ability to map the ocean floor?
4. Which parts of the ocean floor would you expect there to be the greatest amount of
living organisms?
5. How much deeper did the Trieste submerge than Alvin?
6. Compare and contrast the continental shelf and the abyssal plain.
7. Why do you think mapping the seafloor is important to the Navy? Explain.
8. If the mid-ocean ridge is created where the tectonic plates separate, why is a mountain
range formed there?