You're thinking of 'parallels of constant latitude'.
This comparable to the perimeter of a circle.
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 three main invisible lines around the Earth are the Equator, the Tropic of Cancer, and the Tropic of Capricorn. These lines help determine important geographic phenomena such as climate zones and the changing of seasons.
The equator is the only parallel that is a great circle because it is centered on the Earth's axis of rotation. This means that it divides the Earth into two equal hemispheres and its circumference is the maximum possible for a circle on the Earth's surface. Other parallels are smaller circles and not great circles.
The orbit of the Moon around the Earth is elliptical. An ellipse is a flattened circle, much like an oval. The Moon takes just under a month to revolve around the Earth. Looking down on the Earth above the North Pole, the Moon revolves counterclockwise around the Earth, which is the same direction that the Earth rotates on its axis.An ellipse. Very close to a circle though.Unlike many other moons, the Earth's moon follows an elliptical orbit.
The equator.
They're not invisible on maps, but the don't exist on the earth's surface.
It is a circle because, the earth is a circle, and the equator stretches all the way around the earth.
Its axis
Because of the revolution of the moon around the earth.
This comparable to the perimeter of a circle.
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 equator is an invisible diameter around the Earth.
YES. A small circle is simply a circle around the earth that does not fly over the direct opposite place on earth that a plane took off from. A great circle goes full circumference of earth, where a small circle does not. Being a circle they both fly in a constant direction.
The orbit of the Earth is roughly a circle.
The invisible line around which the Earth rotates is called its axis. This axis passes through the North and South Poles and is tilted at an angle of approximately 23.5 degrees relative to the plane of Earth's orbit around the Sun.
The three main invisible lines around the Earth are the Equator, the Tropic of Cancer, and the Tropic of Capricorn. These lines help determine important geographic phenomena such as climate zones and the changing of seasons.