Cerrar
The Earth: Origin and composition
The origin of the Earth
Studying the Earth's interior
Layers of the geosphere
Minerals
Physical properties of minerals
Optical properties
Mechanical properties
Magnetic properties
Other properties of materials
The importance of minerals
Metal ores
Raw materials for industry
Gems or preiuous stones
Rocks
Types of rocks according to their origin
Igneous rocks
Sedimentary rocks
Formation of sedimentary rocks
Classification of sedimentary rocks
Metamorphic rocks
The rock cycle
The use of rocks
Extraction of minerals and rocks
