geographical terms

What is Lunar Day?

Lunar day is equal to the period of one rotation of the earth on its axis with respect to the moon, or the duration of time between successive crossings of a meridian by the moon, about 24 hours 50 minutes. It is associated with the occurrence of the Tides, hence it is also known as ..


What is Lynchet?

A man-made terrace on a hill-side, generally parallel to the contours is known as Lynchet. Lynchets are a feature of ancient field systems of the British Isles. They are commonly found in vertical rows and more commonly referred to as ‘strip Lynchets.

What is Calcicole?

Calcicole is a plant that requires a soil which is rich in lime for its growth. The word is derived from the Latin ‘to dwell on chalk’. Under acidic conditions Aluminium becomes more soluble and phosphate less. As a consequence, calcicoles grown on acidic soils often develop the symptoms of Aluminium toxicity, i.e. necrosis, and phosphate deficiency, i.e. anthocyanosis (reddening of the leaves) ..

What is Cape Doctor?

In Geographical terms, Cape Doctor is a strong wind that blows down from the plateau to the South coast of the Republic of S. Africa. It is responsible for a sheet of cloud over Table Mountain known as ‘the Tablecloth’. It is known as the Cape Doctor because of a local belief that it clears Cape ..

What is Extrusive rock?

Extrusive rock is an igneous rock formed due the pouring out of lava on the surface, where it solidified. The cooling is fast resulting in small-crystalled or even glassy rocks e.g., basalt rhyolite, obsidian, andesite etc.