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ICSE Class 7 Geography Question 6 of 15

Antarctica — Question 6

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Question 6(b)

Describe the climate conditions of Antarctica.

Answer

Climatic conditions of Antarctica:

  1. Antarctica is an extremely cold, dry and windy continent. The continental edges experience powerful winds which blow at a speed of about 160 kilometres per hour. These strong cold winds are called blizzards.
  2. The summer in Antarctica is from November to February. During this time the sun never sets. The summer temperature remains below the freezing point at around -28°C in Antarctic interior.
  3. The winter is from May to August. The sun never rises during these months. As the winter approaches, the sea around Antarctica freezes. The winter temperature is around -50°C.
  4. Humidity in Antarctica is very low as the moisture in air freezes. No rainfall occurs in Antarctica as the land surface remains frozen and the air remains dry. However, light snowfall occurs during winter, mainly in the coastal areas.

ICSE Class VII Geography — Chapter 7: Study of Continents: Antarctica

Bright Tutorials | ICSE Class VII | Geography | Chapter 7

Antarctica — The Frozen Continent

Antarctica is the fifth largest continent, located around the South Pole. It is the coldest (-89.2°C record), driest (less than 200 mm precipitation), windiest (katabatic winds up to 300 km/h), and highest continent. No country owns it, and there are no permanent residents — only scientists at research stations. Its ice sheet covers 98% of the continent and contains 70% of the world's fresh water.

Exploration — The Race to the South Pole

The race to the South Pole between Roald Amundsen (Norway) and Robert Scott (Britain) is one of history's most dramatic events. Amundsen reached first on 14 December 1911 using dog sleds and careful planning. Scott arrived 35 days later on 17 January 1912 and died on the return journey. Ernest Shackleton's Endurance expedition (1914-16), where his ship was crushed by ice, is considered one of the greatest survival stories ever.

Wildlife, Research, and the Antarctic Treaty

Antarctica's food chain depends on krill — tiny creatures eaten by penguins, seals, and whales. Emperor penguins breed in winter at -60°C. India has two research stations: Maitri (1989) and Bharati (2012). The Antarctic Treaty (1959) ensures Antarctica is used for peaceful purposes and scientific research only, with no military activity, mining, or nuclear testing allowed.

Key Takeaways for ICSE Class VII Students

  • Antarctica has penguins but NO polar bears (polar bears are in the Arctic)
  • Amundsen reached South Pole FIRST (14 Dec 1911); Scott reached 35 days later
  • Antarctica is a "cold desert" — it gets very little precipitation
  • India's stations: Maitri (1989) and Bharati (2012)
  • If all ice melted, sea levels would rise by 58 metres