You're thinking of 'parallels of constant latitude'.
What is said to be the invisible line on which Earth rotates upon is called the Axis. It makes a full rotation every 24 hours which is one whole day.
Pick any number between zero and 90, then choose north or south.
All the points on earth at the latitude you selected form an east/west circle around the earth.
The lines of latitude and longitude.
The Equator!
Laditude
Across the surface of earth are the
The equator is an imaginary circular line around the entire earth, with the center of the circleat the center of the earth.Any circle that has its center at the center of the earth divides the earth's surface exactly in half.
It is a circle because, the earth is a circle, and the equator stretches all the way around the earth.
This comparable to the perimeter of a circle.
The Sun does not circle Earth. Earth circles around the Sun. It takes one year for Earth to revolve once around the Sun.
180th meridian
The equator.
The equator is an imaginary circular line around the entire earth, with the center of the circleat the center of the earth.Any circle that has its center at the center of the earth divides the earth's surface exactly in half.
The invisible lines around the earth are called lines of latitude and longitude. Lines of latitude run east-west and measure the distance north and south of the equator, while lines of longitude run north-south and measure the distance east and west of the Prime Meridian. These lines help in locating specific points on Earth's surface.
They're not invisible on maps, but the don't exist on the earth's surface.
Its axis
It is a circle because, the earth is a circle, and the equator stretches all the way around the earth.
Because of the revolution of the moon around the earth.
the equator is an invisible diameter around the Earth.
A great circle
It is a circle because, the earth is a circle, and the equator stretches all the way around the earth.
The equator is the only line of latitude that is a great circle because it is the only line that divides the Earth into two equal halves. A great circle is the largest circle that can be drawn on a sphere, and the equator meets this criteria by encircling the Earth's widest point.
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