Life in the Deserts - Worksheets

 CBSE Worksheet 01

Life in the Deserts

  1. Sahara rocky surface are ___ m high
    1. 2500
    2. 500
    3. 2047
    4. 1048
  2. Ladakh lies in the rain shadow of
    1. Alps
    2. Kanchenjunga
    3. Himalaya
    4. Aravali
  3. Sahara once used to be a lush green plain, but changed in climate changed it to
    1. Hot and wet region
    2. Cool and wet region
    3. Cool and dry region
    4. Hot and dry region
  4. Sahara once used to be a
    1. lush green plateau
    2. lush green plain
    3. lush green mountain
    4. lush green desert
  5. Tafilalet Oasis is a large oasis with an area of about
    1. 13,000 sq.km
    2. 12,000 sq.km
    3. 14,000 sq.km
    4. 15,000 sq.km

  6. Match the following:

    (a) Oasis(i) Libya
    (b) Bedouins(ii) glacier
    (c) Oil(iii) depressions with water 
    (d) Gangri(iv) Sahara
  7. Fill in the blanks:

    Deserts have extremely high or low temperatures and have ________ vegetation.

  8. State true or false:

    Sahara desert is a hot desert.

  9. Name the birds which are common in the Ladakh desert.

  10. Name the prominent animal species of Sahara desert.

  11. Name an important river that flows through Ladakh.

  12. Write a note on the inhabitation of Sahara.

  13. Describe the people of the Sahara desert. Also, write about their activities.

CBSE Worksheet 01
Life in the Deserts

Solution

  1. (a) 2500 Explanation: Sahara desert is covered with gravel plains and elevated plateaus with bare rocky surface. These rocky surfaces may be more than 2500m high at some places.
  2. (c) Himalaya Explanation: As ladhak in the rain shadow of the Himalayas, there is little rainfall, as low as 10 cm every year. 
  3. (d) Hot and dry region Explanation: Present-day Sahara once used to be a lush green plain.  Cave paintings in Sahara desert show that there used to be river. But the climate has changed it to a very hot and dry region.
  4. (b) lush green plain Explanation: Sahara once used to be a lush green plain. Cave paintings in Sahara desert show that there used to be rivers.
  5. (a) 13,000 sq.km Explanation: Tafilalet Oasis in Morocco is a large oasis with an area of about 13,000 sq.km

  6. (a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)

  7. scarce
  8. True

  9. Some birds of Ladakh are Robins, Redstarts, Tibetan snow cock, Raven and Hoopoe. Some of these are migratory birds. 

  10. Camels, hyenas, jackals, foxes, scorpions, many varieties of snakes and lizards are the prominent animal species living in the Sahara desert.

  11. Several rivers flow through Ladakh, Indus is the most important among them. The rivers form deep valleys and gorges. Several glaciers are found in Ladakh, for example the Gangri glacier. 

    1. Despite its harsh climate, the people of Sahara pursue different activities.
    2. The Bedouins and Tuaregs are famous nomadic tribes rearing livestock like goats, sheep, camels, and horses.
    3. These animals provide milk, hides from which they make leather for belts, slippers, water bottles, hair is used formats, carpets, clothes, and blankets.
    4. People wear heavy robes as protection against dust storms and hot winds.

  13. 1. The Sahara desert experiences harsh climate. Despite that various groups of people such as the Bedouins and Juaregs live here. These are nomadic tribes who pursue different activities.

    2. They rear animals such as goats, sheep, camels and horses. They get milk and hides from these animals. They prepare leather from hides. This leather is used in making belts, slippers, water bottles. They use the hair of these animals in making mats, carpets, clothes and blankets.

    3. The people of the Sahara desert wear heavy robes to protect themselves from the dust storms and hot winds.

    4. The oasis in the Sahara desert and the Nile valley in Egypt support settled population. Since water is available, people grow date palms. They also grow rice, wheat, barley and beans.

    5. The Sahara is undergoing change with fast speed. Tuaregs, the nomadic tribe, are now acting as guides to foreign tourists. More and more nomadic herdsmen are migrating to cities in search of jobs in oil and gas operations.