List and explain four topics covered in Chapter 1 of the textbook.

The main sections visible are:

• 1.1 Introduction to Physics (pages 1-8)
• 1.2 Pressure (pages 8-30), which includes topics like atmospheric pressure, the equation $p = \rho gh$ for pressure in fluids, transmission of pressure in fluids, and applications of pressure in fluids.
• 1.3 Mechanical properties of materials (pages 31-49), covering concepts such as tensile stress and strain, elasticity, Hooke's Law, and modulus of elasticity.
• 1.4 Temperature and thermal expansion (starting on page 51), which discusses temperature units, measurement, and thermal expansion/contraction in solids and liquids.