physical science
Refers to the branch of natural science that studies non-living systems, encompassing physics, chemistry, astronomy, and earth sciences.
Physical science is a field that includes physics and chemistry.
自然科学 is a broader term for natural science, which also includes life sciences like biology, whereas 物理科学 specifically refers to the physical sciences.
Compound of 物理 (physics) and 科学 (science). The term is a direct translation of the English 'physical science'.