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14.3
Read and translate the text
Antarctica
Antarctica, fifth in size among the world’s continent, lies concentrically about the
South Pole, with a landmass almost wholly covered by a vast ice sheet. The area of the
continent is about 14,200,000 square kilometers. The southern portions of the Atlantic,
Indian and Pacific oceans form the Antarctic ocean around Antarctica.
Antarctica is a compact, mountainous plateau having only three pronounced
irregularities along the coastline: the Weddell Sea facing the Atlantic; the Antarctic
(Palmer) Peninsula thrust northward in the direction of Cape Horn to latitude 63
0
; and
farther west the deep indentation of Ross Sea, which supports on its inner reaches a
broad expanse of enduring shelf called ‘Ross Barrier’. This is the largest area of
persistent, water-born ice, with dimensions of about 300 by 500 miles.
From place to
place huge glaciers, tongues of inland ice, extend downward through rocky, steep-
sided coastal valleys from the interior high plateau to the sea.
All of Antarctica, save a scattering of high, angular peaks and negligible,
discontinuous tracts of coastal lowland is covered with a deep mantel of enduring ice
and snow. It is estimated that 90 per cent of the world’s ice is concentrated in this
single, enormous expanse. Most of it stands at high altitude, averaging more than 6,000
feet above the sea. The thickness of the ice cap has been seismically measured to
average about 8,000 feet.
Antarctica is a continent almost devoid of lakes, without rivers, marshes, having
no soil, no forests, no grasslands, nor any deserts of the sort found in milder latitudes.
Its
fauna are creatures of the sea, such as certain varieties of whales, giant Weddel seal,
flying birds like the albatross, petrel, etc. The most prominent inhabitant of Antarctica
is the penguin. A flightless bird, it lives on the pack ice and in the oceans around
Antarctica, and breeds on the land or ice surfaces along the coast. Most typical are the
Adelie and emperor penguins. Plant life includes over a hundred species of lichens and
mosses found on bare rock areas along the coast. Algae often color the snow of coastal
tracts and are found in a few freshwater lakes.
The size, latitude, altitude and comparative compactness of Antarctica, the height
and steepness of its coastal margins, the broad embayments
of Ross Sea and Weddell
Sea, and the tapering projection of a single peninsula, all surrounded by the unfrozen
sea, combine to establish the essential climatic character of the South Polar ice cap.
Antarctic weather may be described as a combination of very cold air, high winds,
and blowing snow. Antarctica’s coldest temperatures often reach –73
0
C. The almost
constant wind intensifies the cold. The snow that falls never melts and the pressure
caused by the enormous weight of the snow turns it to ice. Despite the large amounts of
ice and snow that cover the continent, geographers regard Antarctica as desert because
it receives little precipitation.
Antarctica was a central part of the former supercontinent Gondwanaland. As
Gondwanaland broke apart to form the continents of the southern hemisphere,
Antarctica drifted from the tropical zone to its present polar position. Within the
mountains are found many coal deposits and fossil remains
related to the earlier
tropical climate of Antarctica.
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14.4 Say whether the following statements are true or false
1. Antarctica is larger than Europe and Australia.
2. Ninety per cent of the world’s ice is known to be concentrated on the North Pole.
3. The thickness of the ice cap has been measured to average about 800 feet.
4. There are many rivers in Antarctica.
5. Antarctica is devoid of plant and animal life.
6. Many factors influence the climatic character of Antarctica.
7. Antarctica’s coldest temperatures often reach –73
0
C.
8. Antarctica was a central part of the former supercontinent Gondwanaland.
14.5 Complete the following sentences
1. Antarctica lies ………. .
2. Antarctica’s three pronounced irregularities are ………. .
3. All of the continent is covered with ………. .
4. The largest area of persistent water-born ice is called ………. .
5. Plant and animal life of Antarctica includes ………. .
6.
Factors that influence the climate character of the continent are the
following ………. .
7. Antarctic weather can be described as ………. .
8. As Gondwanaland broke apart to form the continents of the southern hemisphere,
Antarctica ………. .
14.6 Read the texts and reproduce them in the form of a dialogue
Географы различают понятия «Антарктика» и «Антарктида». Название
«Антарктика» происходит от греческих слов «анти» – против, «арктикос» –
северный, то есть лежащая против северной полярной области земли –
Арктики. Антарктика включает материк Антарктида с прилегающими к нему
островами и южные полярные воды Атлантического, Индийского и Тихого
океанов до зоны так называемой антарктической конвергенции, где сходятся
холодные антарктические воды с относительно тёплыми
водами умеренных
широт. В среднем эта зона лежит около 53
0
05’ ю.ш.
***
В недрах Антарктиды обнаружены разнообразные полезные ископаемые:
руды горных и цветных металлов, крупные запасы слюды и графита, уран,
золото, алмазы. Геологи предполагают, что громадная впадина между морями
Росса и Уэдделл хранит большие запасы нефти и газа. Но все эти запасы
полезных ископаемых считают пока потенциальными, так как их современная
добыча в суровых условиях Антарктиды связана с большими трудностями и
экономически нерентабельнa.
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14.7 Answer the following questions
Where is Antarctica situated?
What pronounced irregularities has Antarctica?
What is the largest area of persistent, water-born ice? Give its dimensions.
Are there any rivers, lakes, marshes, or swamps in Antarctica?
What kinds of plant life are found in Antarctica?
What can you say about Antarctica’s fauna?
What factors determine Antarctica’s climate?
Why do geographers regard Antarctica as a desert?
What signs of former tropical climate has Antarctica?
14.8 Text
for written translation
The Antarctic region was first penetrated by European explorers in the 18 th
century. Cook’s circumnavigation in 1772–1775, and the resulting awareness of the
large population of whales and seals there, ushered in the first era of marine mammal
exploitation in the Antarctic waters. Fur seals were massively ever exploited, and
eliminated from some islands by 1820s. Sealers and whalers become major explorers
of Antarctica and Sub-Antarctica in the 19 th century while searching for new
hunting grounds. National expeditions began to be sent to Antarctica in the middle of
the 19 th century. The first deliberate overwintering was in 1898 and the South Pole
was reached by Roald Amundsen in 1911, although the mapping of Antarctica was
only completed in the late 1940s. Permanent human presence in Antarctica dates
mainly from the establishment of year-round research station in the 1940s – although
the Argentina station «Orcadas» has been continuously operated since 1904.
In 1959,
twelve countries, including the United States and the Soviet Union,
agreed to allow freedom of scientific investigation on Antarctica. They also agreed
not to use the continent for military purposes. This meant that they would not test
nuclear weapons there. Later four other nations signed the agreement, called the
Antarctic Treaty. Subsequent agreements in what has been termed the Antarctic
Treaty System (ATS) include the 1972 Convention for the Conservation of Antarctic
Seals (CCAS), the 1980 Convention for the Conservation of Antarctic Marine Living
Resources (CCAMLR), and the 1991 Protocol of Environment Protection.
14.9 Make up all possible types of questions to the text 14.8
14.10 Speak on:
1. geographical position of Antarctica;
2. flora, fauna, climate;
3. exploration of Antarctica;
4. the Antarctic Treaty