From Wikipedia:

Physics is the "fundamental science" because the other natural sciences (biology, chemistry, geology, etc.) deal with systems that obey the laws of physics. The physical laws of matter, energy, and the forces of nature govern the interactions between particles (such as molecules, atoms, or subatomic particles). Some basic principles of physics are:

• Describing and measuring motion
  • Newton's laws of motion
  • Forces, weight, and mass
  • Momentum and conservation of momentum
• The theory of gravity
• Energy, work, and power
  • Motion, position, and energy
• Energy forms
  • Energy conservation, conversion, and transfer.
  • Energy sources
• Kinetic Molecular Theory
  • Phases of matter and phase changes
  • Temperature and thermometers
  • Energy and heat
  • Heat flow: conduction, convection, and radiation
  • The Three Laws of thermodynamics
• The principles of waves and sound
• The principles of electricity, magnetism, and electromagnetism
• The principles, sources, and properties of light