The lines of longitude start at the Prime Meridian, in Greenwich, England. Longitude measures how far west or east an object is from the Prime Meridian. A high point of land rising steeply above its surroundings. A long chain of mountains is called a range. The Andes Mountains are in South America.
People travelling through the desert often stop at an oasis for rest and water.
The salt water surrounding the great land masses, and divided by the land masses into several distinct portions, each of which is called an ocean. The five oceans of the world are the Pacific, Atlantic, Indian, Arctic, and Antarctic. It is difficult to climb to the top of Pike's Peak in Colorado because it is so high. A piece of land extending into the sea almost surrounded by water. Florida and Italy are peninsulas.