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Class 5 The World Around Us — Journey of a river

Follow a river from its beginning in the hills to its delta at the sea, and say how a dam, a flood and pollution each change what the river does for the people around it.

Name: ________________________

Before you start

One river, from the hills to the sea, with each part of its course named.

12345
  1. 1. Source
  2. 2. Tributary
  3. 3. Main river
  4. 4. Delta
  5. 5. Sea

The river is one channel for most of its length and many channels at each end — small streams gathering into it at the top, small streams spreading out of it at the bottom. The delta is where the fresh water finally meets the salt.

  1. 1.Match each kind of river to how it behaves through the year.

    • A perennial river
    • A seasonal river
    • Flows in the rainy season
    • Flows through the whole year

  2. 2.As it reaches the sea a river stops being one channel and fans out into many small streams. What is that fan of streams called?

  3. 3.A village is moved and a stretch of forest goes under water when a new dam is built. Why does that happen?

    • a) The river changes direction and runs the other way
    • b) The stored water floods the land that was there before
    • c) The reservoir water is too salty for trees to live in
    • d) The dam wall needs the stones the village was built from

  4. 4.What does the chapter say a dam is?

    • a) A net stretched across a river to catch waste
    • b) A deep channel dug to carry a river to a new place
    • c) A bridge built so people can cross a river safely
    • d) A giant wall that blocks a river's flow and stores water behind it

  5. 5.Small streams keep joining a river as it crosses the land, making it wider and stronger. What are those joining streams called?

  6. 6.Disha stirs a spoon of sugar into one glass of water and a spoon of cooking oil into another, and stirs both well. Which glass looks clear afterwards?

    • a) Both of them, because stirring makes anything dissolve
    • b) The one with cooking oil, because oil dissolves in water
    • c) The one with sugar, because sugar dissolves in water
    • d) Neither of them, because water in a glass stays cloudy

  7. 7.A dam has been built across this river. Tap the reservoir — the large water body the dam is holding back.

    Write the number of the part.

    1234

  8. 8.Why is the Godavari called Dakshina Ganga?

    • a) Because it begins at the same place as the Ganga
    • b) Because it flows through southern India and is regarded as sacred
    • c) Because it is longer than the Ganga
    • d) Because its water is carried north to join the Ganga

Answer key — Class 5 The World Around Us — Journey of a river

  1. 1. A perennial river → Flows through the whole year; A seasonal river → Flows in the rainy season
  2. 2.
    • delta
    • a delta
  3. 3. b) The stored water floods the land that was there before
  4. 4. d) A giant wall that blocks a river's flow and stores water behind it
  5. 5.
    • tributaries
    • tributary
  6. 6. c) The one with sugar, because sugar dissolves in water
  7. 7. 1 — The reservoir
  8. 8. b) Because it flows through southern India and is regarded as sacred