This is an imaginary line around the middle of the Earth. It lies halfway between the North and South Poles, at 0 degrees latitude. An equator divides the planet into a Northern Hemisphere and a Southern Hemisphere.
The Earth is widest at its Equator. The distance around the Earth at the Equator, its circumference, is 40,075 kilometers (24,901 miles).
The Earth’s diameter is also wider at the Equator, creating a phenomenon called an equatorial bulge. The diameter of a circle is measured by a straight line that passes through the center of the circle and has its endpoints on the boundary of that circle. Scientists can calculate the diameter of latitudes, such as the Equator and Arctic Circle.
The Earth’s diameter at the Equator is about 12,756 kilometers (7,926 miles). At the poles, the diameter is about 12,714 kilometers (7,900 miles). The Earth’s equatorial bulge is about 43 kilometers (27 miles).
Picture Credit : Google