Which of earth's layers contains the most mass?

The layer of Earth that contains the most mass is the mantle. The mantle is one of the three main layers of Earth, lying between the crust and the core. It makes up about 84% of the Earth's volume and has a considerable amount of mass.

To determine this answer, one can rely on scientific studies and measurements of Earth's composition. One method involves studying the behavior of seismic waves during earthquakes. As seismic waves pass through different layers of Earth, their speed and path can be analyzed to determine the properties of each layer, including its composition and density. Additionally, studies of meteorites and the elemental composition of rocks can help scientists better understand the distribution of mass within Earth's layers.

Overall, through a combination of seismic studies, laboratory experiments, and geological observations, scientists have concluded that the mantle contains the majority of Earth's mass.