Explain how water vapour in the Earth's early atmosphere contributed to the formation of oceans.

As the Earth cooled, the water vapour present in the early atmosphere condensed into liquid water, leading to the formation of oceans. This process was crucial in shaping the planet's surface and creating environments suitable for life.

A strong answer should directly address the approved learning objective to explain that water vapour condensed to form the oceans as the Earth cooled. This question belongs to The Earth's early atmosphere within The composition and evolution of the Earth's atmosphere, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to water vapour, and keeps the wording specific to AQA GCSE revision.