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Understanding Weather
Understanding Weather
The NCERT social science chapter understanding weather
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Academic
Subcategory:
Grade 7-SSc
20 questions
Question 1
During a humid summer day, the air temperature is 34°C. Why does it feel much hotter than the thermometer reading?
Sweat evaporates slowly due to high humidity
Wind speed increases body temperature
Air pressure becomes higher
Clouds trap underground heat
Question 2
Which weather instrument measures atmospheric pressure, helping predict approaching storms?
Hygrometer
Barometer
Thermometer
Rain Gauge
Question 3
Which weather condition is most likely when warm, moist air rises rapidly and cools?
Fog forms at ground level
Strong sunshine continues
Clouds develop due to condensation
Air pressure permanently increases
Question 4
A weather report predicts 'low pressure moving towards the coast.' What should people expect?
Stable weather for several days
No change in wind direction
Sudden drop in humidity
Increased chances of clouds, rain and strong winds
Question 5
Why do meteorologists use satellites for weather forecasting?
They observe clouds and storms over large areas
They increase rainfall artificially
They measure underground water
They prevent cyclones
Question 6
Which weather element directly influences the drying of wet clothes the most?
Air pressure
Wind speed
Visibility
Latitude
Question 7
Which layer of Earth's atmosphere experiences nearly all weather events?
Stratosphere
Mesosphere
Troposphere
Thermosphere
Question 8
Why is a five-day weather forecast usually less accurate than tomorrow's forecast?
Satellites stop collecting data
Weather instruments become inaccurate
Temperature cannot be measured ahead
Small atmospheric changes grow larger over time
Question 9
Which combination is essential for cloud formation?
Moisture and cooling of air
High air pressure only
Dry winds only
Strong sunlight only
Question 10
Which instrument is used specifically to measure rainfall?
Barometer
Rain Gauge
Hygrometer
Wind Vane
Question 11
Which weather situation is most likely before a thunderstorm?
Clear skies and rising pressure
Cold dry air descending
Warm humid air rising rapidly
Strong snowfall begins immediately
Question 12
Which weather element mainly determines the direction in which smoke from a factory moves?
Humidity
Air pressure
Temperature
Wind direction
Question 13
Why is humidity usually higher near oceans than inland deserts?
Continuous evaporation adds moisture to the air
Air pressure is always lower
Deserts have stronger gravity
Oceans produce more oxygen
Question 14
Which instrument measures the amount of moisture present in the air?
Thermometer
Hygrometer
Anemometer
Barometer
Question 15
Which statement correctly distinguishes weather from climate?
Climate changes every hour
Weather always remains constant
Climate is the average weather over many years
Weather describes conditions over decades
Question 16
Which weather condition would most likely cause flights to be delayed?
Bright sunshine
Mild breeze
Comfortable humidity
Dense fog reducing visibility
Question 17
Why do farmers regularly check weather forecasts before sowing crops?
To choose the best time for planting and irrigation
To predict earthquakes
To measure soil minerals
To estimate population growth
Question 18
Which weather element is measured using an anemometer?
Humidity
Wind speed
Rainfall
Air pressure
Question 19
A coastal city receives heavy rainfall although temperatures are moderate. What is the best explanation?
Temperature alone controls rainfall
Air pressure never changes
Moisture availability is more important than temperature alone
Rainfall depends only on altitude
Question 20
Why do weather departments collect data from thousands of stations instead of only one?
One station is enough for global forecasts
To compare historical monuments
To calculate Earth's age
Weather systems move across regions and require widespread observations
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