The oval-shaped orbital motion of the planets around the sun is called .....
What two scientists correctly believed that the planets revolved around the sun?
Aristotle and Ptolemy
Copernicus and Gallileo
Copernicus and Aristotle
Keptler and Ptolemy
What word correctly describes our solar system?
Earth's revolutions around the sun cause .....
day and night
How often does "leap year" occur?
every 4 years
every 2 years
once a decade
There are 5 questions to complete.