Class 7 Winds Storms And Cyclones CBSE Questions & Answers

Class 7 · Winds Storms And Cyclones

This is Science Class 7 Winds Storms and Cyclones CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Increased wind speed is followed by
  • A
    High pressure
  • B
    No pressure
  • C
    Low pressure
    Correct
  • D
    Moderate pressure
2
The greater in difference in pressure
  • A
    No change in wind speed
  • B
    Lower the wind speed
  • C
    Very low change in wind speed
  • D
    Higher the wind speed
    Correct
3
What makes the balloon inflated when placed in hot water?
  • A
    Increase temperature make the balloon lighter
  • B
    Increased temperature makes the balloon heavy
  • C
    Increased temperature makes the balloon softer
  • D
    Increase temperature increase the pressure
    Correct
4
Thickness of atmosphere above the earth is
  • A
    145 km
    Correct
  • B
    125 km
  • C
    100 km
  • D
    75 km
5
Atmosphere around the earth maintains its
  • A
    Temperature
    Correct
  • B
    Shape
  • C
    Density
  • D
    Pressure
6
Rows of trees grown along the coastal areas to reduce the impact of cyclones are known as
  • A
    Protection
  • B
    Mangroves
    Correct
  • C
    Shelter break
  • D
    Wind break
7
All vital atmospheric process leading to various climate and weather conditions take place in the
  • A
    Troposphere
    Correct
  • B
    Ionosphere
  • C
    Stratosphere
  • D
    Exosphere
8
Weathering is the
  • A
    Breaking down of rocks
    Correct
  • B
    Frequent change in weather
  • C
    Change in temperature
  • D
    No change in weather for longer time
9
Change in season is caused due to
  • A
    All of these
  • B
    Revolution of earth
    Correct
  • C
    Inclination of earth
  • D
    Rotation of earth
10
The word monsoon is derived from Arabic word --------------.
  • A
    Monsoon
  • B
    Moonsun
  • C
    Mausam
    Correct
  • D
    Monoson
11
There is difference in climate of northern and southern hemisphere due to
  • A
    Rotation of earth around the sun
  • B
    Revolution of earth around the sun
    Correct
  • C
    Rotation of earth on its own axis
  • D
    Revolution of earth on its own axis
12
Sudden occurrence of light due to friction of clouds is called
  • A
    Lightening
    Correct
  • B
    Storm
  • C
    Cyclone
  • D
    Flood
13
Hot air have more kinetic energy than cold air as
  • A
    Hot air is lighter
  • B
    Energy increase with decrease in temperature
  • C
    Cold air is heavier
  • D
    Energy increase with temperature
    Correct
14
Cyclone is followed by
  • A
    Darkness
  • B
    Drought
  • C
    Brightness
  • D
    Flood
    Correct
15
Lightening is heard little earlier than thunder sound because
  • A
    Light require medium for propagation
  • B
    Light moves slower than sound
  • C
    Light travels faster than sound
    Correct
  • D
    Sound require medium for propagation