<meta http-equiv="refresh" content="1; url=/nojavascript/">
Dismiss
Skip Navigation

Formation of Earth loading

Earth formed from the solar nebula and contracted by gravity and differentiated; Moon formed when a giant asteroid struck Earth and flung material out into space.
loading
Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
Please wait...
Please wait...

Original text