Questions

A sinkhole (in Karst topography) is a hole in the ground that forms when water dissolves surface rock. Often, this surface rock is limestone, which is easily eroded, or worn away, by the movement of water.

Formation of a Sinkhole: In a landscape where limestone sits underneath the soil, water from rainfall collects in cracks in the stone. These cracks are called joints. Slowly, as the limestone dissolves and is carried away, the joints widen until the ground above them becomes unstable and collapses. The collapse often happens very suddenly and without very much warning. Water collects in these collapsed sections, forming sinkholes.

Sinkholes also form when the roofs of caves collapse. Sinkholes are often funnel-shaped, with the wide end open at the surface and the narrow end at the bottom of the pool.Sinkholes vary from shallow holes about 1 meter (3 feet) deep, to pits more than 50 meters (165 feet) deep.

Holkar Trophy is associated with Bridge sport.

Bridge is the ultimate tricky card game that four people can play with a pack of 52 cards. It is the greatest source of enjoyment.

History of the Holkar Trophy ::

It was a treasured dream of Late Maharaja Yeshwant Rao Holkar to have regular National Bridge Tournament at Indore for promotion of the game in the erstwhile Holkar state.

More :: Indian History Questions

Epicentre of Earthquakes can be over both oceanic and continental surface. Epicentres above oceanic surface are cause of tsunamisof large intensity. Anearthquake's hypocentreis the position where the strain energy stored in the rockis first released, marking thepointwhere the fault begins to rupture.