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