The earth has three layers of varying temperatures. What are its three layers?

crust

mantle

core

Explanation:

the crust the mantle and

the core

The inner core is solid, the outer core is liquid and the mantle is a solid-plastic.

Explanation:

Inner is usually yellow, the outer core is usually orange, mantle is usually red and the crust is brown.

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity