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Geography Ch - 3 Our Changing Earth Social Studies - Geography Ch - 3 Our Changing Earth

CBSE - STD 7 - Social Studies (CBSE - English Medium). 84 questions in this chapter.

Question types

Geography Ch - 3 Our Changing Earth question types

84 questions across 10 question groups — pick any mix to generate a Social Studies paper with step-by-step answer keys.

84
Questions
10
Question groups
5
Question types
Sample Questions

Geography Ch - 3 Our Changing Earth questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 5MCQ (1 Mark)1 Mark
Which of the following is not a common earthquake prediction method, adopted by local people?
  • A
    Abnormal animal behaviour
  • B
    Fish in the ponds get agitated
  • C
    Snakes come to the surface
  • ✓
    Children start crying

Answer: D.

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Q 6Assertion and Reason (1 Mark)1 Mark
Assertion (A) Glaciers does not create deep hollows in their path and form picturesque mountain lakes as they push soil and stones aside.
Reason (R) Glacial moraines are formed when material transported by glaciers is deposited, leading to the creation of various landforms.
  • A
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true, but R is not the correct explanation of A
  • C
    A is true, but R is false
  • ✓
    A is false, but R is true

Answer: D.

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Q 7Assertion and Reason (1 Mark)1 Mark
Assertion (A) The lithosphere is divided into several plates, and their movement is caused by the circulation of molten magma within the Earth.
Reason (R) The movement of molten magma within the Earth creates forces known as endogenic and exogenic forces, which lead to the creation of landforms and natural phenomena.
  • ✓
    Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true, but R is not the correct explanation of A
  • C
    A is true, but R is false
  • D
    A is false, but R is true

Answer: A.

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Q 38CASE BASED QUESTIONS(4 Mark)4 Marks
Read the passage given below and answer the following questions.
The running water in the river erodes the landscape. When the river tumbles at steep angle over very hard rocks or down a steep valley side it forms a waterfall. As the river enters the plain it twists and turns forming large bends known as meanders. Due to continuous erosion and deposition along the sides of the meander, the ends of the meander loop come closer and closer. In due course of time, the meander loop cuts off from the river and forms a cut-off lake, also called an ox-bow lake. At times the river overflows its banks. This leads to the flooding of the neighbouring areas. As it floods, it deposits layers of fine soil and other material called sediments along its banks.
This leads to the formation of a flat fertile floodplain. The raised banks are called levees. As the river approaches the sea, the speed of the flowing water decreases and the river begins to break up into a number of streams called distributaries. The river becomes so slow that it begins to deposit its load. Each distributary forms its own mouth. The collection of sediments from all the mouths forms a delta.
(i) What is formed when a river tumbles at a steep angle over hard rocks or down a steep valley side?
(a) Floodplain $\quad$ (b) Meander $\quad$ (c) Waterfall $\quad$ (d) Levee
(ii) What is the term for large bends in a river formed as it enters the plain and twists and turns?
(a) Levee $\quad$ (b) Delta $\quad$ (c) Meander $\quad$ (d) Sediment
(iii) What is the result of continuous erosion and deposition along the sides of a meander loop?
(a) Formation of a waterfall
(b) Creation of an ox-bow lake
(c) Flooding of neighbouring areas
(d) Development of levees
(iv) What is the term for the flat, fertile plain formed by the deposition of fine soil and sediments during river flooding?
(a) Delta $\quad$ (b) Floodplain $\quad$ (c) Meander $\quad$ (d) Distributary
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