Question: What technology was used to map the sea floor by providing topographic maps?
Satellite imagery
Sonar
Underwater drones
Correct Answer: Sonar
Question: What is the name of the global system of underwater mountains?
Oceanic trench
Abyssal hills
Mid-ocean ridge
Correct Answer: Mid-ocean ridge
Question: What process creates new sea floor as plates diverge at mid-ocean ridges?
Plate tectonics
Sea-floor spreading
Subduction
Correct Answer: Sea-floor spreading