Tag: geography

The major exports of Tamil Nadu include:

India had trade through the sea routes in the pre-colonial period. Surat was the main port on the western coast, which connected India to the Persian Gulf and the Red Sea. On the Eastern coast, the main ports were Masulipatnam on the coromandel coast and Hoogly in Bengal. They had trade contacts with Southeast Asian ports.

At present, there are around 303 Agriculture Produce Marketing Centres (APMCs) distributed all over Tamil Nadu. The APMC is further classified into Primary and Secondary marketing centres and non-regulated marketing centres.

Major imports of Tamil Nadu include:

Rotation is the movement of the earth on its axis. The earth takes about 24 hours to complete one rotation on its axis. The period of rotation is known as the earth day. This is the daily motion of the earth.

Glacial deposition is the settling of sediments left behind by a moving glacier. As glaciers move over the land, they pick up sediments and rocks. The mixture of unsorted sediment deposits carried by the glacier is called glacial till. Piles of till deposited along the edges of past glaciers are called moraines.

Drumlin, oval or elongated hill believed to have been formed by the streamlined movement of glacial ice sheets across rock debris, or till. The name is derived from the Gaelic word druim (“rounded hill,” or “mound”) and first appeared in 1833.

Larger pieces of rock that are encrusted in till or deposited on the surface are called "glacial eratics". They range in size from pebbles to boulders, but as they are often moved great distances, they may be drastically different from the material upon which they are found.

Fluvioglacial landforms are landforms molded by glacial meltwater. This discharge of glacial streams, both over the surface and beneath the ice sheet, is higher in the warmer summer months. As subglacial water often flows under pressure, it has a high velocity and is very turbulent.

The Earth is a non-luminous body but the sun is luminous. As the earth is rotating around its axis, half of its portion is facing the sun and the other half is entirely dark due to the absence of sun. In other words, half of the globe have day and on the other half, it is a night. As the earth is rotating around the sun its every part is exposed to Sun within every 24 hours this rotation causes days and nights.