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crystal ball a globe of glass or crystal used by fortune-tellers to tell what will happen in the future. In stories, crystal balls are often used by witches or wizards.
equator the imaginary circle around the earth that is halfway between the North and South Poles. The equator is represented by a line that goes around the middle of a globe.
global in the shape of a globe. [1/2 definitions]
globe A globe is a round ball with a map of the earth on it. We also sometimes use the word "globe" for other things that have the shape of a round ball. [2 definitions]
latitude When we talk about latitude, we are talking about how far north or south of the equator something is. If we look at a globe, the equator is shown as a line that goes all the way around the earth. It divides the earth into a top half and a bottom half. Latitude, the distance of something north or south of the equator, is measured in units called "degrees."
longitude distance on the earth's surface east or west of an imaginary line on the globe that goes from the north pole to the south pole and passes through Greenwich, England. Longitude is usually measured in degrees.
meridian If you look at a globe with a map of the world, you will see lines that go up and down. Each of the lines go through both the north pole at the top of the globe and through the south pole at the bottom of the globe. These lines that go up and down are called meridians. They are also called lines of longitude.