Question

Which of the following causes waves?
A) Underwater earthquake
B) Underwater volcanic eruption
C) Slippage of the seafloor along earthquake fault
D) All of the above

Answer 1

Hint: Wind blowing over the sea causes waves to form. The wind's strength, duration, and fetch all influence the characteristics of waves. A wave crest is created when the wind blows across the surface of the ocean or a lake, causing continuous disruption.

Complete answer:
Underwater disturbances that displace significant amounts of water quickly, such as earthquakes, underwater volcanic eruptions, or landslides, create the majority of potentially dangerous waves. Large, shallow earthquakes with an epicentre or fault line close or on the ocean floor produce the most damaging tsunamis. The large-scale vertical displacements disrupt the ocean's surface, displace water, and cause deadly tsunami waves.

Underwater vents or fissures in the Earth's surface from which lava can erupt are known as submarine volcanoes. Many undersea volcanoes are found around mid-ocean ridges, which are sites of tectonic plate development. Underwater volcanic eruptions can release massive amounts of volcanic material, displacing the seawater and causing tsunami waves in the region. Hence, option B is the correct answer.

Large tsunami waves are created when the seafloor moves abruptly upward or downward following an earthquake, similar to a kid splashing in the bathtub. Tsunamis can be triggered by earthquakes that cause underwater landslides, which dispense massive amounts of seawater. Thus, option C is also a correct answer.

Therefore the correct answer is option ‘D’.

Note: Ocean currents, such as the North Atlantic Drift, Labrador Current, and Benguela Current, are vast volumes of surface water that flow in regular patterns around the seas. Warm and cold ocean currents are the two main types of ocean currents. Storm surges and tsunamis don't produce a normal smashing wave, but rather a significant rise in sea level as they approach the shoreline, and they can be devastating to coastal environments.