1 Putting green: The putting green, or green, is where the hole for each fairway is located. 2  Hazards: Also called traps, hazards are purposely-placed elements that are designed to be especially difficult to get a golf ball out of. 3  Common hazards include sand traps and bodies of water.. Know the object of the game. The object of golf is to strike the golf ball with a long-handled instrument called a club and guide it into each hole on the course in order. A number of holes, usually 9 or 18, are played and the final results are tallied after the last player has sunk the ball in the final hole.
(plural inner cores). 1  Used other than as an idiom: see inner ,â core. ( 2 planetology) The solid material found in the centre of some planets at extremely high temperature and pressure, distinct from the liquid outer core. ( 3 geology) The innermost part of the Earth, believed to be made of a nickel-iron alloy. 4  Link/Cite.
Geologists hypothesize that the Earth's center is composed of predominantly iron. The outer portion of the center, known as the outer core, is thought to be liquid iron. While the interior portion of the center, known as the inner core is thought to be solid iron. This hypothesis is based upon two important observations. First, energy waves known as shear waves do not travel through the outer core. Secondly the Earth has a magnetic field.