This course starts with a simple introduction to strain and stress, and derives the seismic wave equation. Ray theory is then brought in to explain travel times of seismic arrivals. The concept of tomography methods for the inversion of earth’s internal structure is then described. Surface waves and normal modes are derived from a different approach to the wave equation. Finally the seismic source theory and earthquake prediction problems are discussed. Subjects such as reflection and refraction seismic methods, digital seismic data processing will also be touched upon during the course.