formation of solar system and terrestrial planets?

Question by Jane d: formation of solar system and terrestrial planets?
Can someone help me please :(

12) the steps in the process of the formation of terrestrial planets were
a. gravitational condensation of hydrogen gas, followed by capture of planetesimals
b. accretion of cold planetesimals containing large amount of hydrogen and helium
c. gravitational condensation of H. He, and dust in eddies or vortices in the outer solar nebula
d. planetesimals accreting to grow larger over time owing to gravity and collisions

18) What was the form of the material from which the solar system formed?
a. a nebula made entirely of hydrogen and helium gas
b. a nebula made mostly of hydrogen and helium gas, but with heavier elements from supernova explosions
c. a nebula made mostly of heavy elements, but with hydrogen and helium from the supernova explosion
d. debris from the explosion of a massive star

19) Could an eclipse occur during a full moon? why or why not?


Best answer:
Answer by Nightmarei only know the answer to the last one..but it sounds like youre trying to cheat :P

Add your own answer in the comments!







Over the Ganges, in Varanasi, it was a sight to remember! A large number of people gathered to watch the total solar eclipse as it happened for a full three minutes on July 22nd, 2009, in Varanasi.
Video Rating: 4 / 5

Total Solar Eclipse | Solar Eclipse Information