Earth tide Earth tide Earth tide (also known as solid Earth tide, crustal tide, body tide, bodily tide or land tide) is the displacement of the solid earth's surface caused by the gravity of the Moon and Sun. Its main component has meter-level amplitude at periods of about 12 hours and longer. The largest body tide constituents are semi-diurnal, but there are also significant diurnal, semi-annual, and fortnightly contributions. Though the gravitational forcing causing earth tides and ocean tides is the same, the responses are quite different. The larger of the periodic gravitational forces is from the Moon but that of the
What Kind of Fool three weeks at number ten on the Hot 100 in March and April 1981. It also spent four weeks atop the "Billboard" adult contemporary chart. Popular American TV serial "Glee" covered this song in 2011 by fictional character Blaine Anderson (as played by Darren Criss). This was featured on their soundtrack album "". No Glee episode had featured this version, as it is only appeared in the album. What Kind of Fool "What Kind of Fool" is the title of a vocal duet from 1981 (see 1981 in music) by singers Barbra Streisand and Barry Gibb. The song was written