The correct answers to these open questions are the following.
-Crust definition in your own words.
The crust is the solid, outer layer of the earth. It is the first shell that covers planet earth and it is made of minerals and rocks.
-Mantle definition in your own words.
The mantle is the layer between the crust and the core. Indeed is the second layer of the planet.
-Upper mantle definition in your own words.
The upper mantle is the layer that starts in the crust and ends approximately 225 miles down the crust. It is also known as the asthenosphere. What is its composition? Very hot liquid rock.
-Lower mantle definition in your own words.
The lower mantle is made of a thin layer of hot liquid rock and most of solid rock. It is also known as the mesosphere. Geologists considered that the lower mantle comprises 55% of the volume of our planet.
-Outer core definition in your own words
Also known as the lithosphere, the outer core is the exterior part of the planet and goes 62 miles down the surface of the earth.
-Inner core definition in your own words.
The inner core is precisely the interior of planet earth. It is dense and very hot.