Physical Geography

The Deccan Traps are a large igneous province located on the Deccan Plateau of west-central India (between 17°–24°N, 73°–74°E) and one of the largest volcanic features on Earth.

A geyser is a spring characterized by intermittent discharge of water ejected turbulently and accompanied by a vapour phase (steam). The word geyser comes from Geysir, the name of an erupting spring at Haukadalur, Iceland; that name, in turn, comes from the Icelandic verb geysa, “to gush”, the verb itself from Old Norse.

The prospect of producing electricity from the hydrological resources of the Plateau region lies not, as has been suggested, in the ‘region’s fast flowing rivers’. The flow rate of most rivers in the region is relatively slow. However, the sloped topography of the plateau itself provides enormous capacity to generate electricity.

The schists constitute a group of medium-grade metamorphic rocks, chiefly notable for the preponderance of lamellar minerals such as micas, chlorite, talc, hornblende, graphite, and others. Gneissic rocks are usually medium- to coarse-foliated and largely recrystallized but do not carry large quantities of micas, chlorite or other platy minerals. Mica minerals make some rocks sparkle! They are often found in igneous rocks such as granite and metamorphic rocks such as schist.

The Pacific Ring of Fire is an area where a large number of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a 40,000 km horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements.

when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks the Sun. This can happen only at new moon, when the Sun and the Moon are in conjunction as seen from Earth. In a total eclipse, the disk of the Sun is fully obscured by the Moon.

One kg per sq mtr is approximately the quantum of the pressure exerted by the atmosphere at sea level.

Nitrogen is the most abundant gas in the atmosphere. Air is composed of 78.03 percent nitrogen.

Nimbostratus clouds typically form at the ground level up to an altitude of about 6,000 feet in the sky. Clouds occurring at ground level are what scientists call fog.

The jet aircrafts fly very easily and smoothly in the lower stratosphere because There are no clouds or water vapour in the lower stratosphere and There are no vertical winds in the lower stratosphere.

Atmospheric instability is the most important factor in thunderstorm development. Surface heating brings about an element of instability in the warm and moist air lying close to the surface. That is why warm and moist air becomes unstable in spring and summer when it is heated from below. Air mass thunderstorms develop in this way.

Argon is the chemically inactive gas present in the atmosphere.

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