Class 8 Some Natural Phenomena CBSE Questions & Answers

Class 8 · Some Natural Phenomena

This is Science Class 8 Some Natural Phenomena CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
It is easier to row a boat in direction of wind because
  • A
    Air exerts pressure in opposite direction
  • B
    Fresh air help the sail in easy breathing
  • C
    Air exerts pressure in direction of sailing
    Correct
  • D
    Cold wind is lighter
2
Which of the following is not a natural phenomenon?
  • A
    Cooking
    Correct
  • B
    Lightening
  • C
    Earthquake
  • D
    Cyclone
3
Wind blows faster when
  • A
    Moisture in air more
  • B
    Pressure difference between two places is more
    Correct
  • C
    There is no difference in pressure
  • D
    Pressure difference between two places is less
4
Which one of the following is most destructive
  • A
    Typhoon of speed 150km/h
  • B
    Storm of speed 200 km/h
  • C
    Tornado
  • D
    Earthquake of more than 7 magnitude
    Correct
5
Increase in carbon dioxide in air cause
  • A
    Decrease in earth temperature
  • B
    No change in temperature
  • C
    Rise in earth temperature
    Correct
  • D
    Uniform earth temperature
6
The boundaries of earth’s plates, where earthquake tends to occurs are called
  • A
    Volatile zone
  • B
    Poor zone
  • C
    Fault zones
    Correct
  • D
    Default zone
7
Earthquakes are caused by the
  • A
    Movement of earth plates
    Correct
  • B
    High pollution level
  • C
    Tilting of earth axis
  • D
    Movement of water inside
8
Wind mill is used to
  • A
    Measure wind direction
  • B
    Measure wind speed
  • C
    Generate electricity
    Correct
  • D
    Produce high speed wind
9
Skyscrapers contain ___________ to prevent lightening at the top of building.
  • A
    Rain gauze
  • B
    Insulators
  • C
    Lightening rod
    Correct
  • D
    Earth wire
10
Which state of India is badly affected by cyclone recently?
  • A
    Jharkhand
  • B
    Karnataka
  • C
    Orissa
    Correct
  • D
    Bihar
11
High speed winds are accompanied by
  • A
    Low temperature
  • B
    Increased air pressure
  • C
    Reduced air pressure
    Correct
  • D
    High temperature
12
Which of the following is not due to pressure change?
  • A
    Thunderstorm
  • B
    Lightening
  • C
    Earthquake
    Correct
  • D
    Cyclone
13
If a storm is accompanied by lightening, we should not take shelter under a high tree because
  • A
    It has more rain falling
  • B
    It has more chance of falling thunder
    Correct
  • C
    It may fall during storm
  • D
    It may contain other animals
14
Earthquake activities are monitored by using
  • A
    Radio and television
  • B
    Can not be monitored
    Correct
  • C
    Satellite
  • D
    Wireless and radio
15
Instrument to measure waves of the earthquake is called
  • A
    Seismograph
    Correct
  • B
    Richter scale
  • C
    Wave meter
  • D
    Galvanometer