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.
An earthquake is a tremor that affects the surface as a result of energy release underground from either tectonic plate movement or other external factors. Earthquakes come in different shapes and sizes, the magnitude of a quake is recorded using the Richter Scale. From small, barely felt tremors that register as a 2 on the scale, to larger more devastating earthquakes coming in at 7, which have the ability to level entire cities â the destructive power of a quake is undeniable.