A seismic wave is simply a means of transferring energy from one spot to another within the earth. Although seismologists recognize different types of waves, we are interested in only two types: P (primary) waves, which are similar to sound waves, and S (secondary) waves, which are a kind of shear wave.
Several committees divide their work into sub units called subcommittees. The Senate currently has 16 standing committees, and 4 permanent select or special committees. The House has 19 standing committees and 3 permanent select committees. Committee sizes range from 6 to 50 members per committee. In the House, one person may not serve on more than two standing committees and four subcommittees at one time, though waivers can be granted to serve on additional committees.
The Committee was first created as the Select Committee to Revise the Rules of the Senate on December 3, 1867. On December 9, 1874, it became a standing committee. On January 2, 1947, its name was changed to the Committee on Rules and Administration, and it took over the functions of the following committees: 1  Committee to Audit and Control the Contingent Expenses of the Senate. 2  Committee on Education and Labor (functions were later transferred to Health, Education, Labor, and Pensions Committee)