Planet Earth

There is More Water in the Earth’s Mantle Than on the Surface


The planet Earth is huge. It is so large that we could not even fathom it’s size, the Earth has been estimated to weigh around 6 million, billion, billion kg (that’s 24 noughts!), we consider our planet to be the “blue planet” due to the amount of water but in reality water makes up less than  0.1 % of the entire planet’s mass.

The Earth’s surface contains 70% water, the vast oceans of Earth span for tens of thousands of kilometres, however in comparison to the size of the planet, the Earth’s surface is a tiny portion of the world. For example, in the Earth’s crust, the first layer of the Earth, which is around 35km below earth (which is around the length of the city of London) the mass of the land is 40 times greater than that of the oceans due to the sheer size of the bedrock.

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