The Earth And Solar System Quiz Questions and Answers. 4th, 5th, 6th, grade science quiz online. Learn about the rotation and revolution of the Earth in this quiz. Also test your understanding of the position of the different plants based on the distance from the sun. Learn about the names of the 8 planets, Venus, Mercury, Earth, Mars, Jupiter, .... This test also contains questions about the tilting of the Earth's axis, Milky Way galaxy and more. Review your science skills with this astronomy quiz.