they are not determined they are a leeway so that is a rough estimate so we dont know the actual seasons.
It's not just the orbit. The Earth's tilt also plays a part. The orbit is elliptical, and the 11 degree tilt in the axis creates the seasons.
The actual most important cause of Earth's seasons is it's axis.
its earths tilt on its axis orbiting the sun
There are two things that cause it which are the earths orbit and thetilt of the earths axis.
Now your question is wrong because the earths orbit doesn't contribute to the seasons, its the 23.5 degree tilt of the earth which creates the seasons. The tilt by what i believe was created when the moon was formed, or the godly way when god tilted the earth creating the flood
The Earth rotates on its axis causing either the North or South Hemishere to tilt towards the sun which ever hemishere is tilted toward the sun it is probably spring or summer.
the earth's tilt causes the four seasons.
Tides yes, seasons no. The Earths tilt causes the seasons as we orbit the sun.
buy its rotation of the earth .its the temperature
The actual most important cause of Earth's seasons is it's axis.
Earths seasons are caused by the relative position of the earth to the sun. Since the earth rotates around the sun in an elliptical pattern, sometimes it is closer to the sun than others. This explains summer/winter, etc...
the seasons are caused from earths revolution(1 circle around the sun) while day and night occur from earths rotation (earth spinning on its axis)
rotation of earth -earth is at a tilt so sometimes some parts get more sun then others rotation around the sun -earth will be at different distances from the sun as it rotates around
seasonal change made life possible on the earth by energy from sun heats this layer; and the surface below ; causing expansion of the air.
Earth's rotation on its axis causes day and night. Earth's revolution around the sun causes the seasons.
the way the earth spins arund the sun causes the seasons.
the space cycle that creates canadas four seasons is earths orbiting around the sun and rotating its axis changes the angle of witch sunlight strikes diffrent parts of earth
Actually, it doesn't. The TILT of the Earth on it axis causes seasonal changes.