Question: how was earth made?

Alex Seeney answered on 18 Jun 2018:

The most common theory is called the “core accretion model” – this suggests that when the sun was formed, material in space began to clump together – small particles were drawn together into larger particles, attracting larger and larger clumps to form a rocky core – the core of the Earth. Denser materials sank to the centre of the core, and the lighter materials created the crust.