Explore the Seafloor

Science

The average height of the ocean relative to the land

Sea level

The average height of the ocean relative to the land. sea level. Sea level is the average height of the ocean's surface used as a baseline to measure elevation and depth.

A weight suspended from a string and used as a vertical reference line

Plumb line

A weight suspended from a string and used as a vertical reference line. Plumb line. A plumb line is a simple tool used in science and construction to find or verify a vertical position.

The use of the reflection of sound waves to locate underwater objects

Sonar

The use of the reflection of sound waves to locate underwater objects. Sonar. Sonar is a technology that uses sound waves to find and identify objects underwater by listening to the echoes.

The study of underwater depth of ocean floors

Bathymetry

The study of underwater depth of ocean floors. Bathymetry. Bathymetry is the science of measuring and mapping underwater terrains.

A sediments that are derived from the erosion of rocks on land

Terrigenous

A sediments that are derived from the erosion of rocks on land. terrigenous. Terrigenous refers to materials, primarily sediments, that originate from the erosion of rocks on land and are transported to the ocean.

A sediments that are derived mostly from living organisms

Biogenous

A sediments that are derived mostly from living organisms. biogenous. Biogenous sediments are made from the remains of once-living organisms, like shells or skeletons, found in the ocean.

A sediments that are derived from water

Hydrogenous

A sediments that are derived from water. hydrogenous. Hydrogenous refers to materials that form in the ocean through the precipitation of minerals directly from seawater.

A sediments that are derived from particles from space

Cosmogenous

A sediments that are derived from particles from space. cosmogenous. Cosmogenous sediments are small bits of material that originate from space and accumulate on Earths surface.

Searching for food resources

Foraging

Searching for food resources. Foraging. Foraging is the act of searching for and gathering food in the wild.