Class 07 Social Science Water CBSE Questions & Answers

Class 7 · Social Science Water

This is Social Science class 07 Social Science Water CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The _____ the wind blows, the ___ the wave becomes
  • A
    Stronger, smaller
  • B
    Stronger, bigger
    Correct
  • C
    Slowly, no change in
  • D
    Slowly, bigger
2
When the water on the surface of the ocean rises and falls alternately, they are called
  • A
    Air
  • B
    Wind
  • C
    Evaporation
  • D
    Waves
    Correct
3
Tsunami means
  • A
    Harbour waves
    Correct
  • B
    Land waves
  • C
    Water waves
  • D
    Ocean waves
4
_______ can shift large amounts of ocean water
  • A
    Cyclone, a volcanic eruption or underwater landslides
  • B
    Earthquake, a volcanic eruption or underwater landslides
    Correct
  • C
    Earthquake, a Cyclone or Rainwater
  • D
    Rainwater, a volcanic eruption or Cyclone
5
High Tsunami waves travel at the speed of
  • A
    More than 150 km. per hour
  • B
    More than 550 km. per hour
  • C
    More than 700 km. per hour
    Correct
  • D
    More than 300 km. per hour
6
Which part of Andaman and Nicobar island submerged after tsunami
  • A
    Little nicobar
  • B
    Barren island
  • C
    Indira point
    Correct
  • D
    Landfall island
7
Tsunami or the harbour wave struck havoc in the Indian Ocean on the 26 December 2004. The wave was the result of the earthquake that had its epicenter close to the western boundary of
  • A
    India
  • B
    Timor sea
  • C
    Java
  • D
    Sumatra
    Correct
8
Tsunami or the harbour wave struck havoc in the Indian Ocean on the 26 December 2004. The wave was the result of the earthquake. The magnitude of the earthquake was ___ on the Richter scale
  • A
    6
  • B
    9
    Correct
  • C
    7
  • D
    8
9
On 2004 tsunami , the ocean floor was displaced by about ___ and tilted in a downwardly direction
  • A
    15 ? 25m
  • B
    10 ? 20m
    Correct
  • C
    20 ? 30m
  • D
    25 ? 30m
10
It is ____ when water covers much of the shore by rising to its highest level. It is __ when water falls to its lowest level and recedes from the shore
  • A
    high tide, low tide
    Correct
  • B
    high tide, high tide
  • C
    low tide, low tide
  • D
    low tide, high tide
11
The strong gravitational pull exerted by _____ on the earth?s surface causes the tides.
  • A
    the sun and the stars
  • B
    the plants and the animals
  • C
    the plants and the moon
  • D
    the sun and the moon
    Correct
12
The water of the earth closer to the moon gets pulled under the influence of the moon?s gravitational force and causes
  • A
    Low tide
  • B
    Small tide
  • C
    Long tide
  • D
    High tide
    Correct
13
During ____the sun, the moon and the earth are in the same line and the tides are highest. These tides are called spring tide
  • A
    first quarter and last quarter of moon days
  • B
    full moon and last quarter of the moon days
  • C
    full moon and new moon days
    Correct
  • D
    full moon and first quarter of days
14
Following are the importance of tides except
  • A
    It helps in navigation
  • B
    It helps in catching fish
  • C
    It helps in generation of electricity
  • D
    It helps in protection from sun harmful rays
    Correct
15
Warm ocean currents originate near
  • A
    Tropic of Capricorn
  • B
    Tropic of cancer
  • C
    Pole
  • D
    Equator
    Correct