Seasons

The earth spins on its axis and it tilts when it tilts it causes winter and fall and when it's back on the original axis it's spring and when it gets closer to the sun it's summer.
Spring starts at March 20
Summer starts at June 21
Fall starts at September 22
Winter starts at December 21
Earths position affects the temperatures by The seasons are changed by the earth when it is tilted on its axis.
Northern and southern are completely different when it is summer in the northern it's winter in use southern because they are on different sides of the earth and the tilt the earth does every season changes like we do but theirs is the complete opposite.