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Questions and Answers
Temperature is an indicator of the 'degree of wetness or dryness' of the air.
False
The average temperature on earth at sea level is 25°C.
False
Temperature is generally highest in Polar regions.
False
Humidity measures the amount of water vapour in the soil.
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Relative humidity is calculated by dividing the amount of water vapour by the atmosphere's maximum nitrogen holding capacity.
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Clouds are formed due to the heating of air as it rises up.
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Fog refers to clouds that are high up in the sky.
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Precipitation includes only rain and snow.
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Dense fog may reduce visibility to around 100 m.
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Study Notes
Weather Elements
- Temperature is an indicator of the degree of hotness or coldness of the air, averaging 15°C at sea level but varying according to latitude, elevation, season, and time of day.
- The highest recorded temperature is 58°C, while the lowest is -88°C.
- Temperature is generally highest in the Tropics and lowest near the Poles.
- On any given day, it is usually warmest during mid-afternoon and coldest around dawn.
Humidity
- Humidity is a measure of the amount of water vapour in the atmosphere.
- Relative humidity is the most common measure of humidity, equal to the amount of water vapour present in the atmosphere divided by the atmosphere's maximum water vapour holding capacity at that temperature.
Cloudiness
- Most clouds are produced due to the cooling of air as it rises up.
- When air temperature gets reduced, the excess water vapour in the air condenses into liquid droplets or ice crystals, forming clouds or fog.
- Fog refers to clouds that almost touch the ground, with a visibility range of around 50 m or less in dense fog.
Precipitation
- Precipitation is produced when the droplets and crystals in clouds grow, resulting in various forms such as rain, drizzle, snow, hail, ice pellets, or sleet.
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Description
Learn about the different elements that define temperature and its significance in determining climate. Explore how temperature varies based on factors like latitude, elevation, season, and time of day.
