Ex :
You can choose several answers.
1 – A earth’s referential is…..in geocentrical’s referential :
a-immobil b-in movement
2 – To describe the most simpely the movement of center of the moon, you should use :
a- earth’s referential b- geocentric’s referential
3 – To describe the most simpely the movement of the center of Earth, you have to use :
a- earth’s referential b – geocentric’s referential
c – heliocentric’s referential
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