Earth was initially molten due to extreme volcanism and frequent collisions with other bodies. Eventually, the outer layer of the planet cooled to form a solid crust when water began accumulating in the atmosphere. The Moon formed soon afterwards, possibly as the result of a Mars-sized object with about 10% of the Earth's mass impacting the planet in a glancing blow. Some of this object's mass merged with the Earth, significantly altering its internal composition, and a portion was ejected into space. Some of the material survived to form an orbiting moon. Outgassing and volcanic activity produced the primordial atmosphere. Condensing water vapor, augmented by ice delivered from comets, produced the oceans.

Earth was initially molten due to extreme volcanism and frequent collisions with other bodies. Eventually, the outer layer of the planet cooled to form a solid crust when water began accumulating in the atmosphere. The Moon formed soon afterwards, possibly as the result of a Mars-sized object with about 10% of the Earth's mass impacting the planet in a glancing blow. Some of this object's mass merged with the Earth, significantly altering its internal composition, and a portion was ejected into space. Some of the material survived to form an orbiting moon. Outgassing and volcanic activity produced the primordial atmosphere. Condensing water vapor, augmented by ice delivered from comets, produced the oceans.

1. Was Earth always solid?
2. Why not?
3. Any other reason?
4. Did the collisions occur frequently?
5. What formed on the outside?
6. Did the Moon form before or after the crust?
7. What became plentiful in the atmosphere?
8. What caused the Moon to be created?
9. What size object?
10. Did some of the object stay on Earth?
11. Where did the rest go?
12. What are the seas made of?
13. Anything else?
14. How many things created the atmosphere?
15. What was one?
16. And the other?
17. How big was the object that hit the Earth?
18. Did it hit directly
19. Did the collision affect Earth?
20. How?

Provide a numbered list of answers.
1. no
2. extreme volcanism
3. collisions with other bodies.
4. fno
5. a solid crust
6. after
7. water
8. The Earth was hit by an object
9. the size of Mars
10. yes
11. into space
12. water vapor
13. comet ice
14. two
15. Outgassing
16. volcanic activity
17. 10% of the Earth's mass
18. ino
19. yes
20. it altered its internal composition