Question

Which sequence is the correct order of the Earth's formation events?

A. Water vapor entered the atmosphere from volcanoes, cooling period forming crust, rocks smashing to create molten ball, rain for millions of years forming the oceans.

B. Cooling period forming crust, rocks smashing to create molten ball, rain for millions of years forming the oceans, water vapor entered the atmosphere from volcanoes

C. Rocks smashing to create molten ball, cooling period forming crust, water vapor entered the atmosphere from volcanoes, rain for millions of years forming the oceans.

D. Rocks smashing to create molten ball, water vapor entered the atmosphere from volcanoes, cooling period forming crust, rain for millions of years forming the oceans.

Answer 1

The Earth was formed through rock smashing and it created a molten ball. So if you look at the first two choices, they do not begin with that so we can rule choices A and B out. 

Because the Earth was molten and due to frequent collisions, volcanism was extreme. Water vapor entered the atmosphere from volcanoes. It took a long time for the Earth to cool, which eventually became crust. 

Now we can rule out letter C, because volcanism comes before the cooling. 

The answer is then:

D. Rocks smashing to create molten ball, water vapor entered the atmosphere from volcanoes, cooling period forming crust, rain for millions of years forming the oceans.