True or false: The Earth formed its compositional layers (core, mantle, crust, atmosphere) by accretion in stages as Earth itself grew in size: first iron-rich materials, followed by rocky materials, and finally by ices.

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet? the planet started to cool and an atmosphere formed. the planet started to become round and heat up. the planet started to wobble and turned upside down. the planet started to compress rock and form more radioactive elements.