Question

undersea geologic events that suddenly shift sea - floor rock can displace a large amount of water.
which of the following geologic events could result from sudden undersea shifting and the resulting water displacement?
choose 1 answer:
a an upwelling
b a tsunami
c sea - floor spreading
d a hurricane

Explanation:

• An upwelling is the movement of deep, cold water to the surface, not caused by sudden undersea shifting and water displacement.
• A tsunami is a series of ocean waves caused by sudden vertical movement of a large volume of water, often due to undersea earthquakes (which involve sudden shifting of sea - floor rock).
• Sea - floor spreading is a process at mid - ocean ridges where new oceanic crust is formed, not directly related to the described water displacement event.
• A hurricane is a weather system, not related to undersea geologic events causing water displacement.

Answer:

B. a tsunami