Lava results when magma cools at a slow rate

The growth of crystals in different minerals is directly related to the magma’s cooling rate.

Plutonic rocks contain large crystals because, during their formation, the magma cools at a high rate

The solidification of magma is faster in volcanic rocks than in plutonic rocks.

Volcanic rocks do not contain minerals, because the magma cools at a very high rate.

A mineral is a homogeneous substance in the solid state. It occurs naturally and is formed through abiotic processes. A mineral has a clearly defined chemical structure and also possesses a characteristic crystalline structure.

A mineral is a homogeneous substance in the solid state. It occurs naturally and is formed through biological processes. A mineral has a clearly defined physical structure and also possesses a characteristic crystalline structure.

A mineral is a heterogeneous substance in the solid and liquid state. It occurs naturally and is formed through abiotic processes. A mineral has a clearly defined geological structure and also possesses a characteristic corpuscular structure.

A mineral is a homogeneous substance in the solid state. It occurs artificially and is formed through biological processes. A mineral has a clearly defined physical structure and also possesses a characteristic crystalline structure.

The core is the thinnest layer of the geosphere

The mantle is the innermost layer of the geosphere.

During the formation of the planet, the densest substances rose to the surface.

The crust is divided in two main layers, the outer crust and inner crust.

Cristal shape and size, colour, cleavage, lustre, hardness and streak

Cristal shape and size, colour, plasticity, lustre, hardness and streak

Cristal shape and size, colour, magnetism, lustre, hardness and streak

Cristal shape and size, density, cleavage, lustre, hardness and streak

The diamond is hardest than feldspar

The apatite is hardest than fluorite

The calcite is softest than talc

The quartz is softest than topaz