CBSE Questions for Class 7 Physics Winds Storms And Cyclones Quiz 1 - MCQExams.com
  • Both A and R are true and R explains A.
  • Both A and R are true but R does not explain A.
  • A is true and R is false.
  • A is false and R is true.
When a fluid is heated, it expands and becomes
  • lighter
  • heavier
  • no change
  • none of these
Which of the following expands most of heating?
  • Solids
  • Liquids
  • Sand
  • Gases
Sea breeze, a local wind system characterized by a flow from sea to land 
  • During day
  • During night
  • Throughout day and night
  • None of these
By what sign can an approaching cyclone be identified?
  • Cool breeze and rains.
  • High temperature and humidity.
  • Rains accompanied by lighting
  • Powerful water waves.
During a cyclone, air moves from :
  • Region of high pressure to low pressure
  • Region of high pressure to high pressure
  • Region of low velocity to high velocity
  • Region of high pressure to low velocity
When a substance is heated, its density 
  • increases
  • decreases
  • remains same
  • first decreases then increases
Which of the following will rise the highest?
  • Air at $$10^oC$$
  • Air at $$40^oC$$
  • Air at $$15^oC$$
  • Air at $$5^oC$$
Wind currents are generated due to:
  • Uneven heating between the equator and the poles
  • Change in atmospheric pressure
  • Thunderstorm
  • Cyclone
Suppose you are in a car and it is raining heavily with thunderstorms. Then what is the best way to protect yourself from a possible thunder storm fall?
  • Remain in the car
  • Get out of the car and take cover under the car
  • Run to a nearby tree
  • Get out and stand under an electric pole
Which of the following is the first sign of an approaching cyclone?
  • Rains accompanied by lighting
  • High temperature and humidity
  • Cool breeze and rains
  • Powerful water waves
The instrument that measures the wind speed is called an ____________ .
  • thermometer
  • anemometer
  • seismograph
  • ammeter
Find the odd one out :
anemometer, thermometer, wind speed, formation of storm
  • thermometer
  • anemometer
  • wind speed
  • formation of storm
A typhoon is essentially
  • a flood
  • a cyclone
  • earthquake
  • none of these
How do cyclones decrease the fertility of the soil in the coastal areas?
  • By flooding the land with saline water
  • By dissolving soil and rocks
  • By increasing the water table of the place
  • By decreasing the water table of the place
Which of the following is a anemometer?
Anemometer is used to measure _________ .
  • Wind speed
  • Distance
  • Area
  • Water speed
Which of the following is/are true?
  • The wind blows because of differences in air pressure from one location to another
  • Wind blows from areas of high pressure toward areas of low pressure
  • If the high pressure area is very close to the low pressure area, or if the pressure difference is very great, the wind can blow very fast
  • All of the above
What are the precautions one must take when one is in a cyclone-hit area ?
  • Not drink contaminated water. Store and use drinking water effectively.
  • Not touch wet switches and fallen power lines.
  • Not go out just for the sake of fun.

  • All the above.
______ pressure indicates sinking air where clouds cannot form. ______ pressure indicates rising air, which allows clouds to form, bringing rain or snow. Fill in the blank.
  • High, high
  • High, low
  • Low , low
  • Low, high
Select the effective safety measures during a cyclone.
  • Presence of a cyclone forecast and warning service.
  • Rapid communication of warnings to the Government agencies, the ports, fishermen, ships and to the general public.
  • Construction of cyclone shelters in the cyclone prone areas, and Administrative arrangements for moving people fast to safer places.
  • None of the above.
Which of the following is not an example of air exerting pressure ?
  • Pressing the brakes of a bicycle.
  • Filling up the bicycle tube with air
  • Riding bicycle against the flow of wind
  • Playing with the kite
Which of the following cannot be considered as a safety measure taken in times of cyclone ?
  • Storing water for emergencies.
  • Following as instructed over radio
  • Get outside and move around
  • Stay away from stray wire.
Anemometer is a ___________ instrument.
  • light emitting
  • wind speed measuring
  • sound producing
  • reflecting
As an individual caught in a cyclone-prone area, which of the following you must not do?
  • Drink safe and potable drinking water only.
  • Pressurize the rescue force and make undue demands.
  • Step outside only when required.
  • Cooperate with neighbors.
Why does a paper slip, held between thumb and finger, get lifted up when we blow air over the paper?
  • Air lifts the paper up.
  • Disturbance produced in the air
  • Blowing over the paper reduces the air pressure above the strip.
  • None of these
What affects the direction of kite in the sky ?
  • Motion of bird in the sky
  • Clouds in the sky
  • Wind blowing in the sky
  • Other kites around it
Which of the following states of India is most likely to be hit by a cyclone?
  • Madhya Pradesh
  • Andhra Pradesh
  • Punjab
  • Jammu and Kashmir
The cloud region around the eye of the cyclone is characterized by:
  • light winds
  • high-speed winds
  • thick clouds with heavy rain
  • none of the above
The eye of a cyclone is:
  • A violent area
  • A calm area
  • A haunted area
  • None of the above
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 7 Physics Quiz Questions and Answers