EQUINOXES
1-REVOLUTION (revolucion):is when the earth move around the sun.
2-REVOLUTION LENGTH(longitud de la revolucion): the distance earth around the sun.
3-ORBIT (orbita): orbit is in ellipse around the sun.
4-ELLIPSE (eclipse): is a oval shape.
5-AXIS TILT (eje de la inclinacion): is a line not straight down in the middle of the hemisphere.
6-EQUINOXES(equinoccion): the sun cross the plane of earth equitation and length of day and night are equal.
7-HEMISPHERE(hemisferio): is a half of the sphere, half north and other half south.
8-EQUATOR(ecuador): the middle line of the earth.
The EQUATOR is a middle line in the Earth. That's is happened because the sun's rays going dirrect
to earth so the is EQUINOXES. The HEMISPHERE is a half of a ball that divide two parts North and South. The AXIS TILT is a line not straight down the middle of earth and the titled to 23.5*. The REVOLUTION LENGTH is a distance of the earth around the sun (1 year or 365 days). The Earths ORBIT is an ELLIPSE. That's why we have different seasons.
