DMPQ: Discuss the structure and stratification of the atmosphere?( geography)

Variations of temperature, pressure and density are much larger in vertical directions than in horizontal. This strong vertical variations result in the atmosphere being stratified in layers that have small horizontal variability compare to the variations in the vertical. The atmosphere can be divided into five layers according to the diversity of temperature and density. … Read more

DMPQ: What are different types of plate boundaries?( World Phy. Geo)

There are three types of plate boundaries: Divergent Plate boundaries: where plates move away from each other. : These are oceanic ridges where new oceanic lithosphere is created by upwelling mantle that melts, resulting in basaltic magmas which intrude and erupt at the oceanic ridge to create new oceanic lithosphere and crust. As new oceanic … Read more

DMPQ: Explain ‘Geysers’ and ‘Hot springs’?

Geysers are fountains of hot water and superheated steam that may spout up to a height of 150 feet from the earth beneath. The phenomenon are associated with a thermal or volcanic region in which b the water below is being heated beyond boiling point. The jet of water is emitted with an explosion, and … Read more

DMPQ: What are sedimentary rocks? What are the its different types? List down the features of sedimentary rocks.

Sedimentary or detrital rocks :   They Formed as a result of denudation (weathering and erosion).These deposits through compaction turn into rocks. This process is called lithification. Sedimentary rocks Cover 75 per cent of the earth’s crust but volumetrically occupy only 5 per cent. They are layered or stratified of varying thickness. Example: sandstone, shale etc. … Read more

DMPQ: Differentiate between the Composite and the shield Lava.

Composite lava are highly viscous with a high melting point. They are light colored and have low density, and have a high percentage of silica. They flow slowly and seldom travel far before solidifying. The resultant cone is therefore steep sided.  The rapid solidifying of lava in the vent obstruct the flow of the out-pouring … Read more

DMPQ: Distribution of volcanoes around the world.

Most known volcanic activity and the earthquakes occur along converging plate margins and mid-oceanic ridges. There is a strikingly close agreement between volcanic and earthquake zones of the earth. The major regions of volcanoes around the world are: Pacific ring of fire:  Pacific Ring of Fire’ is estimated to include two-thirds of the world’s volcanoes.  The major regions … Read more