In Precambrian Time, the Earth was formed 4.6 billion years ago. Earth was collecting dust, rock, and ice and formed in space. Over time, the Earth got bigger and bigger and bigger to its size today. The Earth was basically a hot fire ball in space.
When Earth cooled down 4 billion years ago, water vapor turned into rain and it rained for hundreds of millions of years. After the rain stopped the ocean covered most of Earth.
The oldest rock was found in the Western part of Canada. It is very unusual to find a rock really old. The rock was 3.8 billion years old.
When Earth cooled down 4 billion years ago, water vapor turned into rain and it rained for hundreds of millions of years. After the rain stopped the ocean covered most of Earth.
The oldest rock was found in the Western part of Canada. It is very unusual to find a rock really old. The rock was 3.8 billion years old.