Final answer:
Soil mechanics describes the behavior of soils, focusing on their physical and mechanical properties. This field supports geotechnical engineering and ensures structural stability by analyzing soil response to stresses.
Step-by-step explanation:
The branch of soil physics and engineering mechanics that describes the behavior of soils is known as soil mechanics. This field is a crucial part of geotechnical engineering and studies the physical and mechanical properties of soil as it interacts with its environment, structures, and human practices. A soil scientist, who works in this field, must utilize a strong foundation in physical sciences, life sciences, and mathematics to understand the formation, distribution, and characteristics of soils. The knowledge gained can lead to recommendations for soil management programs and influence the design and construction of foundations and other structures, making it integral to the success of engineering projects. Soil mechanics incorporates principles of mechanics of solids, as it examines how soils respond to external stresses, such as forces and displacements, to ensure structural stability and safety.