The Geosphere is made out of a core is lava that is in the centre of the earth. And there is an inner mantle which is next to the core. There is an outer mantle which is next to the inner mantle then there is the crust which we walk and drive on.
The core is made of hot lava the core is the hottest part of earth that is where lava comes from when a tectonic plate brake has a little piece comes off a volcano is likely to erupt
The mantles surface is a rocky and hard surface which we could not live on that is why we have the crust the reason of why we could not live on it is because is would not be able to is that it would be to hot .

Tectonic plates are what make earthquakes when they break apart it causes a volcanic eruption.

BY JOSH M!!!!!!!!!!