Science Olympiad Dynamic Planet Practice Test

Which advancements in the 1950s contributed to the mapping of the ocean floor?

1. Seafloor drilling

2. Submarine exploration

3. Oceanographic vessels

4. Aerial survey technology

The correct answer is: Oceanographic vessels

The advancements in oceanographic vessels during the 1950s were pivotal in the mapping of the ocean floor because these specialized ships were designed specifically for oceanic research. They were equipped with sophisticated instruments and technology to conduct detailed surveys of the seabed. The introduction of echo sounding and sonar technology allowed researchers to map underwater features, determine ocean depth, and identify various geological formations. This marked a significant shift in marine science, facilitating the exploration and understanding of the ocean's physical properties and topography. The other options, while related to ocean exploration, did not primarily focus on mapping during that period. For example, seafloor drilling was more about sampling and studying the ocean's geological and biological components rather than the initial mapping. Submarine exploration contributed to understanding the ocean environment but was limited by its operational depth and technological constraints at the time. Aerial survey technology, although useful for coastal areas, does not effectively map the ocean floor as it cannot penetrate the water's surface.