Physics is the study of the nature of matter and interactions of matter (and radiation). It is often said to be the most fundamental of the sciences because each of the other disciplines (biology, chemistry, environmental science, engineering, medicine etc.) deals with particular types of material systems that obey the laws of physics, whereas mathematics provides the logical framework in which the physical laws may be precisely formulated and predictions quantified.

Theories in physics are tested by comparing the predictions of the theories with data collected from observations and experimentation which are mostly numerical descriptions or measurements of the material world. Physicists are very serious about measurement, and the other sciences and society as a whole have benefited from the spill-over effects of the invention of many amazing measuring devices and techniques. Precise measurements have made many advanced technological applications possible; examples include the study and manipulation of materials, and breakthroughs in fields as diverse as geophysics and biology.

Some topics of physics would include: light, sound, magnetism, electricity, kinematics, dynamics, etc.