PowerPoint Presentation for Chapter 2-Understanding the Weather-Class 7-Subject Social Science ********************************* Weather Weather is the condition of the Earth's atmosphere at a particular time and place. It includes temperature, rainfall, wind, humidity, and air pressure. Atmosphere: It is the layer of gases that surround some planets — in the case of our Earth, we call these gases ‘air’. The Earth’s atmosphere may be compared to a cake with several layers. The layer closest to the surface of the Earth is called the ‘troposphere’. We use many words to describe the weather — hot, cold, rainy, cloudy, humid, snowy, windy, and so on. Elements of Weather Temperature: How hot or cold the atmosphere is. Precipitation: Any form of water, such as rain, snow, sleet or hail, that falls from the sk...
Multiple Choice Questions Chapter 2- Understanding the Weather( Geography) Class 7 Subject Social Science
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Multiple Choice Questions (MCQs)
1. Which layer of the atmosphere is responsible for weather phenomena?
a) Stratosphere
b) Mesosphere
c) Troposphere
d) Thermosphere
Answer: c) Troposphere
2. The height of the troposphere varies between:
a) 2 to 6 km
b) 6 to 18 km
c) 20 to 30 km
d) 10 to 40 km
Answer: b) 6 to 18 km
3. What is weather?
a) Permanent climatic pattern
b) State of the atmosphere at a place and time
c) Planetary wind system
d) Ocean currents
Answer: b) State of the atmosphere at a place and time
4. Which of the following is not an element of weather?
a) Temperature
b) Vegetation
c) Humidity
d) Wind
Answer: b) Vegetation
5. Water vapour in the air is known as:
a) Rain
b) Fog
c) Humidity
d) Steam
Answer: c) Humidity
6. A rise in which of the following increases air pressure?
a) Temperature
b) Humidity
c) Wind
d) None of these
Answer: d) None of these
7. Which instrument is used to measure rainfall?
a) Hygrometer
b) Barometer
c) Rain gauge
d) Wind vane
Answer: c) Rain gauge
8. The unit used to measure atmospheric pressure is:
a) Celsius
b) Millibar
c) Liter
d) Meter
Answer: b) Millibar
9. Which element measures air pressure?
a) Rain gauge
b) Barometer
c) Thermometer
d) Anemometer
Answer: b) Barometer
10. What is used to measure temperature?
a) Wind vane
b) Thermometer
c) Rain gauge
d) Hygrometer
Answer: b) Thermometer
11. The temperature scale mostly used in India is:
a) Kelvin
b) Rankine
c) Celsius
d) Fahrenheit
Answer: c) Celsius
12. What is used to measure humidity?
a) Anemometer
b) Barometer
c) Hygrometer
d) Thermometer
Answer: c) Hygrometer
13. What does a wind vane measure?
a) Speed of wind
b) Humidity
c) Direction of wind
d) Temperature
Answer: c) Direction of wind
14. A fast-moving wind turns which instrument to measure speed?
a) Wind sock
b) Barometer
c) Hygrometer
d) Anemometer
Answer: d) Anemometer
15. Wind flows from:
a) Low to high pressure
b) High to low pressure
c) North to south
d) East to west
Answer: b) High to low pressure
16. Which of these is an example of precipitation?
a) Fog
b) Dew
c) Hail
d) Humidity
Answer: c) Hail
17. What is the term for the scientific study of weather?
a) Geography
b) Meteorology
c) Geology
d) Astronomy
Answer: b) Meteorology
18. What does AWS stand for in weather studies?
a) Automated Weather Station
b) Accurate Weather System
c) Automatic Wind Sensor
d) All Weather Scanner
Answer: a) Automated Weather Station
19. Relative humidity of 100% means:
a) Dry air
b) Moist air
c) Fully saturated air
d) No air
Answer: c) Fully saturated air
20. Which city is likely to have higher humidity?
a) Jaipur
b) Delhi
c) Kochi
d) Bhopal
Answer: c) Kochi
21. A day with 40°C temperature and 80% humidity is:
a) Cool and dry
b) Hot and humid
c) Cold and wet
d) Pleasant
Answer: b) Hot and humid
22. What is the function of a rain gauge?
a) Measures wind direction
b) Measures wind speed
c) Measures rainfall
d) Measures temperature
Answer: c) Measures rainfall
23. A depression in weather means:
a) Low temperature
b) Low pressure
c) High humidity
d) Heavy fog
Answer: b) Low pressure
24. One reason for measuring weather is:
a) Entertainment
b) Fashion
c) Forecasting disasters
d) Education only
Answer: c) Forecasting disasters
25. Which element of weather affects how quickly water evaporates?
a) Rain
b) Humidity
c) Pressure
d) Snow
Answer: b) Humidity
26. Which of these instruments uses rotating metal cups?
a) Barometer
b) Rain gauge
c) Anemometer
d) Wind vane
Answer: c) Anemometer
27. Traditional weather indicators include:
a) Frogs croaking
b) Birds flying low
c) Ants carrying eggs
d) All of these
Answer: d) All of these
28. Which organization forecasts weather in India?
a) WHO
b) ISRO
c) IMD
d) NASA
Answer: c) IMD
29. Which element defines the ‘feel’ of hot or cold?
a) Pressure
b) Wind
c) Temperature
d) Rainfall
Answer: c) Temperature
30. What is the ideal place to set up a rain gauge?
a) Under a tree
b) In a closed room
c) On an open flat surface
d) Near a wall
Answer: c) On an open flat surface
31. What causes coconut oil to solidify in winters?
a) Humidity
b) Pressure
c) Low temperature
d) High wind speed
Answer: c) Low temperature
32. What does a wind sock show?
a) Humidity
b) Rainfall
c) Wind direction
d) Air pressure
Answer: c) Wind direction
33. 1013 millibars is:
a) Humid weather
b) Normal air pressure
c) Heavy rain level
d) Low pressure
Answer: b) Normal air pressure
34. What happens to air pressure at higher altitudes?
a) It increases
b) It remains the same
c) It decreases
d) It becomes zero
Answer: c) It decreases
35. Which month would generally have more rainfall in India?
a) May
b) July
c) November
d) January
Answer: b) July
36. What is the scientific benefit of using digital thermometers?
a) Colourful display
b) Accurate data
c) Looks modern
d) Warmer readings
Answer: b) Accurate data
37. Loo winds are:
a) Cold winter winds
b) Rainy winds
c) Hot and dry winds
d) Stormy coastal winds
Answer: c) Hot and dry winds
38. Snowfall is an example of:
a) Evaporation
b) Wind flow
c) Precipitation
d) Radiation
Answer: c) Precipitation
39. The IMD was established in:
a) 1947
b) 1965
c) 1875
d) 2000
Answer: c) 1875
40. The motto of the India Meteorological Department is:
a) Rain from Ocean
b) From the sun arises rain
c) Storms from space
d) Measure the sky
Answer: b) From the sun arises rain
41. Which of these is a sign of high humidity?
a) Clothes dry fast
b) Air feels heavy
c) Lots of wind
d) Snowfall
Answer: b) Air feels heavy
42. What is the effect of low atmospheric pressure?
a) Bright sun
b) Drought
c) Storm or cyclone
d) Clear skies
Answer: c) Storm or cyclone
43. Who uses wind data frequently?
a) Teachers
b) Painters
c) Pilots and sailors
d) Shopkeepers
Answer: c) Pilots and sailors
44. Why is weather prediction important?
a) To plan school picnics
b) To prevent surprise holidays
c) To stay prepared for disasters
d) To make temperature maps only
Answer: c) To stay prepared for disasters
45. Which type of weather is dominant in May in India?
a) Wind
b) Rainfall
c) Temperature
d) Snowfall
Answer: c) Temperature
46. What is a trace (TR) amount of rainfall?
a) Less than 1 mm
b) More than 50 mm
c) Only snow
d) No rain
Answer: a) Less than 1 mm
47. What do farmers observe to predict rainfall traditionally?
a) Mobile apps
b) TV reports
c) Nature’s signs like ants and frogs
d) City traffic
Answer: c) Nature’s signs like ants and frogs
48. A forest fire may spread rapidly due to:
a) Calm weather
b) High humidity
c) Strong wind
d) Heavy snow
Answer: c) Strong wind
49. Why is weather forecasting more important now?
a) More people watch TV
b) Climate change increases extremes
c) Technology is available
d) It is taught in school
Answer: b) Climate change increases extremes
50. When is atmospheric pressure highest?
a) On mountain tops
b) In forests
c) At sea level
d) In desert
Answer: c) At sea level
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