Making the world better, one answer at a time. The federal civil service was created by an Act of Congress in 1871. It was done to prevent the extreme unfairness in the hiring practices for those who worked for the government.
Introduction. Earthquake waves are seismic waves that are created when energy builds up in rocks and they fracture. Scientists estimate there are several million earthquakes each year. Every earthquake produces P waves and S waves but only larger earthquakes produce Love waves and Rayleigh waves.
Surface waves are seismic waves that are guided along the surface of the Earth and the layers near the surface. These waves do not penetrate the deep interior of the earth, and are normally generated by shallow earthquakes (nuclear explosions do not generate these surface waves).