Iowa State Geology Practice Exam

Submarine landslides can significantly influence the generation of tsunamis. When large amounts of sediment and rock collapse from the continental shelf or slopes into the ocean, this sudden displacement of water can produce waves that travel across the sea at high speeds. If the landslide occurs near coastal areas, the resulting tsunami can reach the shore with devastating effects.

In contrast, erosion refers to the gradual wearing away of land and is influenced by weathering processes, not necessarily tied to sudden geological events like landslides. Flooding generally results from excessive rain or storm surges, while droughts are a prolonged period of abnormally low precipitation. Neither flooding nor droughts are directly caused by landslides, particularly submarine ones, which are more associated with the sudden movement of underwater sediments leading to wave formation. Therefore, tsunamis are the correct answer as they are a direct consequence of the dynamics and disturbances caused by submarine landslides.