Which phenomenon refers to a sudden, fast-moving water surge after submarine landslides or earthquakes?

Which phenomenon refers to a sudden, fast-moving water surge after submarine landslides or earthquakes?

• A. Cyclone
• B. Flood
• C. Storm surge
• D. Tsunami

Answer: (D)

The main idea is that a tsunami is a large, fast-moving surge of water caused by a sudden displacement of the sea caused by events like underwater earthquakes or submarine landslides. When the seabed shifts abruptly, it pushes a huge amount of seawater upward, creating waves that travel across the ocean at very high speeds. In deep water these waves have long wavelengths and may appear small, but they carry a lot of energy. As they approach coastlines and the water becomes shallower, they slow down and pile up, forming towering, destructive waves. This differs from a cyclone (a weather system), a flood (excess water from rain or snowmelt), or a storm surge (a sea-level rise driven by storm winds and pressure). So the sudden, fast-moving water surge after submarine landslides or earthquakes is a tsunami.

The main idea is that a tsunami is a large, fast-moving surge of water caused by a sudden displacement of the sea caused by events like underwater earthquakes or submarine landslides. When the seabed shifts abruptly, it pushes a huge amount of seawater upward, creating waves that travel across the ocean at very high speeds. In deep water these waves have long wavelengths and may appear small, but they carry a lot of energy. As they approach coastlines and the water becomes shallower, they slow down and pile up, forming towering, destructive waves. This differs from a cyclone (a weather system), a flood (excess water from rain or snowmelt), or a storm surge (a sea-level rise driven by storm winds and pressure). So the sudden, fast-moving water surge after submarine landslides or earthquakes is a tsunami.