Problem 1
How many seconds would it take an echo sounder's ping to make the trip from a ship to the Challenger Deep \((10,994\) meters \()\) and back? Recall that depth \(=1 / 2(1500 \mathrm{~m} / \mathrm{sec} \times\) echo travel time \()\)
Problem 5
Explain how the temperature and age of the oceanic crust are responsible for the depth of oceans.
Problem 7
Name a location where a new ocean basin may develop in the future. Explain why you chose that site.
Problem 10
The Tethys Ocean was once global. Today, it has completely disappeared except in the eastern Mediterranean Sea and the Black Sea. Do you think there was more oceanic crust when the Tethys was a global ocean?
Problem 11
This image shows lava at a temperature of about \(1200^{\circ} \mathrm{C}\) erupting on the seafloor west of the Tonga trench. What name is given to lava flows like these that erupt underwater?
