Available Answers

1. 1.

   Fill in the blanks.

   1. The main water bodies of the Earth are ____________, ____________, ____________ and ____________.
   2. The Lakshadweep, Chagos and Carlsberg groups of islands are the tops of a vast ____________ ____________ ____________ that lies on the floor of the Indian Ocean.
   3. The ____________ and ____________ oceans remain frozen for most of the year.
   4. ____________ are parts of the oceancompletely surrounded by landmasses.
   5. Volcanic eruptions may result in the formation of ____________ lakes.
   6. When rivers recede after overflowing their banks, they create ____________.
2. 2.

   Tick the sentences that are true. Correct the others.

   1. The ocean floor is flat and uniform throughout.
   2. Inland seas are a source of fresh water.
   3. Lakes cannot support any life forms.
   4. Meanders cut off from a river to form oxbow lakes.
   5. Rivers flow downwards from a highland.
   6. The Nile flows into the Barents Sea.
3. 3.

   Multiple choice questions.

   1. The percentage of the Earth's surface occupied by water bodies is:
      1. 30%
      2. 45%
      3. 50%
      4. 71%
   2. The deepest point on the surface of the Earth is:
      1. The Mariana Trench
      2. Mid-Atlantic Ridge
      3. The English Channel
      4. East African Rift Valley
   3. The Atlantic Ocean does not touch:
      1. Africa
      2. Europe
      3. South America
      4. Australia
   4. This river does not flow through Asia:
      1. Indus
      2. Seine
      3. Yangtze
      4. Ganga
4. 4.

   Oceans and seas have an impact on climate and weather. Give reasons.

5. 5.

   Oceans and seas are vital for world trade. Give reasons.

6. 6.

   Rivers are good for agriculture. Give reasons.