Author Question: Which planetary fact(s) is(are) explained by the solar nebula theory? a. The orbits are all ... (Read 89 times)

awywial · **on:** Jul 27, 2018

Which planetary fact(s) is(are) explained by the solar nebula theory?

a. The orbits are all approximately in the same plane
b. The orbits are all in the same direction
c. Jovian planets are mostly H and He
d. Terrestrial planets are mostly rock and iron
e. All of the other choices are correct.

Question 2

How is the presence of space debris accounted for by solar system models?

a. Space debris is left over material from the early solar system that never formed into a planet.
b. Space debris was formed by the collision of objects after the planets formed.
c. Space debris is material that existed in our region of space before the Sun formed.
d. Space debris is left over material from the early solar system that never formed into a planet and was formed by the collision of objects after the planets formed.
e. All of the other choices are correct.