What is a Lava?

The molten rocks (magma) are ejected as a result of volcanism. When the magma is extruded through the vent of the volcano, it is scattered all around the crater (mouth of the volcano). The magma after extrusion is known as ”Lava”.   Composition of Lava:  Lava is made up of crystals, volcanic glass, and bubbles …

What is a magma

The molten rocks present in the interior of the earth’s mantle is known as magma. The interior temperature of the earth is very high, which melts the rocks present in the mantle. The molten rocks when extrude through the vent of the volcano are known as lava. In other words lava before ejection is known …

What is a vent of volcano

It is also known as a fissure vent, eruption vent, or simply volcanic vent. A vent is a vertical pipe-like hole through which the volcanic materials/ lava (magma, rocks, debris, volcanic ash, water, and other fluids, and minerals) are extruded.

Volcano and its types

A volcano is a vent in the Earth’s surface, which allows the interior molten magma to erupt out due to extreme pressure and convection. The magma when it comes out of the interior of the earth is known as lava. The lava is composed of solid and molten rocks, debris, and gases, and fluid of …

What is Metamorphism? Different types of metamorphism.

Process of Metamorphism: Metamorphism may be defined as the process of transformation of igneous or sedimentary rocks to metamorphic rocks ( changed rocks ) through the Earth’s movements ( producing heat and pressure). The metamorphism can be thermal when the intrusion of hot mass of igneous rock raises temperature of surrounding rocks. Similarly these can …

What is Isostasy?

Isostasy: The term Isostasy is derived from the Greek works to Iso meaning the same and Stasy meaning to stand. Thus Isostasy means the condition of vertical equilibrium between the floating landmasses and the asthenosphere under them. This condition of sustained adjustment is maintained despite the forces that constantly operate to change the landmasses of …

Ten causes of an Earthquake

An earthquake is an intense thrilling vibration through the earth’s surface. An earthquake may range from a minor vibration (difficult to feel) to a devastating earth movement. An earthquake is a catastrophic shake of the surface of the earth, which can cause tremendous changes over and under the surface of the earth. In the historic …

How do glaciers transport the earthen material?

Glaciers move very slowly from uplands to the lowlands. The transport of glaciers has a deep impact on the landscape. The moving glaciers drift the rocks and the debris along with them. This transportation of the debris is known as glacial transportation. The whole glacier work is carried out in the following forms.  Weathering caused …

Transport by Glaciers

Glaciers are the moving ice bodies toward the downslope. The moving bulges of the ice also cause transportation of other material present on the earth’s surface. The process of moving rocks and debris along with the glacier’s movement is known as the Transportation caused by glaciers. Glaciers squire a huge amount of rock debris by …

Process of Volcanism

Volcanism can be defined as the eruption and extrusion of internal molten rocks of Mantle onto the surface of the earth. The volcano erupts through a crater of the volcano. The eruption of lava and gases takes place as a result of the fast movement of lava/ magma. Scientists use the term magma for the …