ANTIPODES
|
A region or place on the opposite
side of a point on the earth.
|
ANTICYCLONES
|
Winds which blow outward from the
center.
|
APHELION
|
Position of the earth in its orbit
when is at the maximum distance from the sun.
|
ARCHIPELAGO
|
A cluster of islands, e.g., Pearl
Islands in the Gulf of Panama.
|
ATOLL
|
Coral reef resembling a horse
shoe, enclosing a lagoon.
|
AXIS
|
An imaginary line joining north
and south poles.
|
AVALANCHE
|
A vast mass of snow mixed with
earth or stones.
|
BIOSPHERE
|
Animate or inanimate organic
kingdom on earth.
|
CANYON
|
A deep valley cut by a river
through a mountain region, e,g., the Grand Canyon of the Colarado river in
the USA.
|
CONTINENTAL SHELF
|
Land adjoining a continent
submerged in the sea.
|
CYCLONES
|
A low pressure system area in
which the wind blows spirally inward.
|
CROP ROTATION
|
Growing different crops needing
different minerals for their growth in the same piece of land in order to get
more yield.
|
DATE LINE
|
An imaginary line pointing
north-south approximating to the Meridian 180 (east or west) where the date
changes by one day the moment it is crossed.
|
DELTA
|
Alluvial deposit shaped like Greek
letter, formed at the mouth of the river, where it falls into the sea, e.g.,
the Sunderban delta.
|
DEW
|
Condensed atmospheric water
vapours due to the cooling of the air.
|
DRY FARMING
|
Growing of crops in low rainfall
areas by moisture conservation, crop rotation but without irrigation.
|
EQUATOR
|
An imaginary line dividing the
earth into two equal parts.
|
EQUINOXES
|
The day on which nights and days
are of equal duration, e.g., March 22 and September 23.
|
EROSION
|
Wearing away of the earth's land
surface by rain, wind, water, etc. rendering the land infertile.
|
ECLIPSE
|
When one earthly body obscures
another one partially or completely.
|
FOG
|
When the atmospheric moisture
touches cold earth and condenses on dust particles.
|
FROST
|
When the atmospheric moisture
deposits in the shape of icy flakes on the exposed objects or near the ground
due to below freezing point temperature.
|
HIGH SEAS
|
The parts of the sea which do not
come under the territorial jurisdiction of the nations.
|
ICEBERG
|
Huge mass of ice separated from
glacier in the polar regions. These masses of ice float in the oceans with 9
parts submerged in the ocean and one part visible.
|
ISOBARS
|
Lines on the map connecting the
places of the same pressure.
|
ISOTHERMS
|
Lines on the map joining the
places of the same temperature.
|
ISTHMUS
|
Narrow neck of land joining two
land areas.
|
KUNDAN
|
Anew variety of wheat which gives
high yields in both rained and irrigated tracts and responds well to low dose
of water and fertiliser.
|
LAGOON
|
A shallow stream of water at the
mouth of a river enclosed bu dunes of river silt.
|
LIGHT YEAR
|
The distance traveled by light in
one year. It is equal to 9.4*10612 km.
|
LOCAL TIME
|
Time calculated from the sun at
noon at any place of earth.
|
MERIDIAN
|
Imaginary line joining north and
south poles and cutting the equator at right angles.
|
MIST
|
It is just like fog but contain
more moisture.
|
OASIS
|
A part of the desert where water
and vegetation are found.
|
ORBIT
|
The path of the heavenly bodies.
|
PYGMALLION POINT
|
The southernmost point of India,
700 km away from mainland India.
|
PRAIRIES
|
Smooth, treeless, green plain of
Central and North America.
|
REEF
|
Jutting of rock or shingle or sand
at just above or below sea level.
|
SAVANNA
|
Land covered with natural grass.
|
SIDEREAL DAY
|
Time taken by the earth to rotate
once round its axis.
|
SNOW LINE
|
Altitudinal line along which the
area remains snow clad.
|
SPRING TIDES
|
Higher tides in the ocean caused
by the sun and the moon together. When the sun, the earth and the moon are
positioned in a straight line.
|
NEAP TIDES
|
Tides caused by the differences of
the forces exerted by the moon and the sun when both are at right angles to
each other.
|
TORNADO
|
A brisk and violent storm
generally having rotator motion.
|
TUNDRAS
|
Peripheral area of Arctic ocean.
|
TYCOON
|
Violent hurricane in China Sea.
|
WEATHER SATELLITE
|
Artificial satellite designed to
forecast weather.
|
WESTERLIES
|
Constant winds blowing from
south-west in the northern hemisphere and north-west in south hemisphere.
|
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