3.1. COMPOSITION

PRÁCTICA DE LABORATORIO Nº 3: Estructura de la geosfera.

The geosphere is made up of rocks, minerals and landforms. As a rocky planet, the Earth's geosphere is divided into 3 layers. They are, in order of density:

	1. The crust:     a. Continental crust     b. Ocean crust
	2. The mantle:     a. Upper mantle     b. Lower mantle
	3. The core:     a. Outer core     b. Inner core

Remember: the crust is very thin (in proportion to an egg, similar to the shell).

YouTube: Happy Learning English "The Earth and its layers | Educational Video for Kids" (till 1'12'')

Relative density of the main rocks and the layers of the geosphere: (*Iron and nickel are not rocks)

YouTube: Ter "LA ÚLTIMA MODA EN COSMÉTICA: columnas de basalto de 20 metros RIHANNA colección Fenty" (from 23'' till 5'05'').