What happens to electrons when they are in the etc

They are transferred from protein in the midbrain of either the thylakoid membrane or the mitochondrion.  their energy is used to pump hydrogen protons out of the inner membrane space.  

in the end, the electrons are added to the hydrogen protons and oxygen to create water molecules 

No because the eaeht is on a 23.5 degree axis tilt and so when it is winter the northern hemisphere is pointing away from the sun and the soutubern hemisphere is pointing toward the sun