6. The Earth was very hot to start off with, and there were no oceans. As the Earth cooled down the water vapour in the atmosphere condensed to form a liquid water.This liquid water became what?
a puddle
The oceans
water
condensation
7. Why can't scientists be certain about the form of the early atmosphere?
There were no humans around so we must use clues.
They are different theories
Scientists don't know much about the early atmosphere
Scientists don't understand the early atmosphere and need evidence.
8. The Earths early atmosphere was formed by gases produced from what?
Volcanoes
Clouds
Plants
9. The Earths early atmosphere did not contain what?
