3. Which submersible has been used for deep-sea research? (1 point)
SS Trinity
Challenger
Alvin
SS Woods Hole
4. What is the speed of sound in water? (1 point)
100 meters per second
500 meters per second
1,000 meters per second
1,500 meters per second
5. Which of the following currents is associated with downslope movements of dense sediment-rich water? (1 point)
avalanche current
density current
turbidity current
longshore current
6. Seamounts are ____. (1 point)
volcanoes that form on the ocean floor
only found in the Pacific Ocean
a special type of oceanic trench
submarine canyons found near Australia
7. Which of the following occurs at the continental margin in the Pacific Ocean? (1 point)
volcanic activity
earthquakes
plate interactions
all of the above
8. Mineral-rich water, heated by newly formed oceanic crust, escapes through cracks in the ocean floor called ____. (1 point)
nodules
rifts
hydrothermal vents
trenches
9. Which of the following is NOT a biogenous sediment? (1 point)
manganese nodules
calcareous ooze
siliceous ooze
phosphate-rich material
10. Which of the following is NOT a hydrogenous sediment? (1 point)
manganese nodules
calcium carbonates
evaporites
calcareous ooze
11. Most gas hydrates form when which of the following occurs? (1 point)
Bacteria break down organic matter trapped in ocean-floor sediments.
Pressure from overlying rock transforms organic matter into liquid form.
Minerals crystallize from ocean water.
none of the above
12. Which ocean resource is currently NOT economically profitable to mine? (1 point)
salts
manganese nodules
sand
gravel
13. One thousand grams of seawater would consist of how many grams of dissolved substances? (1 point)
35
65
635
965
14. Which layer of the ocean experiences a rapid change in density with depth? (1 point)
deep zone
thermocline
pycnocline
mixed zone
SS Trinity
Challenger
Alvin
SS Woods Hole
4. What is the speed of sound in water? (1 point)
100 meters per second
500 meters per second
1,000 meters per second
1,500 meters per second
5. Which of the following currents is associated with downslope movements of dense sediment-rich water? (1 point)
avalanche current
density current
turbidity current
longshore current
6. Seamounts are ____. (1 point)
volcanoes that form on the ocean floor
only found in the Pacific Ocean
a special type of oceanic trench
submarine canyons found near Australia
7. Which of the following occurs at the continental margin in the Pacific Ocean? (1 point)
volcanic activity
earthquakes
plate interactions
all of the above
8. Mineral-rich water, heated by newly formed oceanic crust, escapes through cracks in the ocean floor called ____. (1 point)
nodules
rifts
hydrothermal vents
trenches
9. Which of the following is NOT a biogenous sediment? (1 point)
manganese nodules
calcareous ooze
siliceous ooze
phosphate-rich material
10. Which of the following is NOT a hydrogenous sediment? (1 point)
manganese nodules
calcium carbonates
evaporites
calcareous ooze
11. Most gas hydrates form when which of the following occurs? (1 point)
Bacteria break down organic matter trapped in ocean-floor sediments.
Pressure from overlying rock transforms organic matter into liquid form.
Minerals crystallize from ocean water.
none of the above
12. Which ocean resource is currently NOT economically profitable to mine? (1 point)
salts
manganese nodules
sand
gravel
13. One thousand grams of seawater would consist of how many grams of dissolved substances? (1 point)
35
65
635
965
14. Which layer of the ocean experiences a rapid change in density with depth? (1 point)
deep zone
thermocline
pycnocline
mixed zone