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World Geography Practice Test: Humidity
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Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye.

World Geography Practice Test: Humidity
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25 Questions

1. Condensation is a process which occurs when
2. Which of the following instruments is used to measure humidity?
3. Which of the following statements is/ are correct about convection?
4. Assertion (A): Humidity is a measure of the amount of water vapour dissolved in the air, not including any liquid water or ice falling through the air. Reason (R): For clouds to form, and rain to start, the air doesn’t have to reach 100% relative humidity at the Earth’s surface, but only where the clouds and rain drops form. Codes
5. Which of the following is the temperature at which water vapour saturates from an air mass into liquid or solid usually forming rain, snow frost, or dew?
6. Assertion (A) : Water vapour varies in concentration in the atmosphere both spatially and temporally. Reason (R) : The highest concentrations of water vapour are found near the equator over the oceans and tropical rain forests. Codes
7. Match List-I with List-II and select the correct answer using the codes given below the lists: List-I List-II A.Evaporation 1.Release of moisture
B. Condensation2.Cold air moves into warm air C.Precipitation 3.Transformation of water vapour into water D.Insolation 4.Gain of heat
5. Incoming solar radiation Codes A B C D
8. Relative humidity refers to
9. What is relative humidity?
10. Which of the following is defined as the ratio of the partial pressure of water vapour in a parcel of air to the saturated vapour pressure of water vapour at a prescribed temperature?
11. The quantity of water in a particular volume of air is called
12. Water vapour has several very important functional roles on our planet. These are
13. Assertion (A): For a given dew point and its corresponding absolute humidity, the relative humidity will change inversely, albeit non–linearly, with the temperature. Reason (R): The partial pressure of water increases with temperature. Codes
14. Which of the following statement is true?
15. Assertion (A): Relative humidity is the ratio of the current absolute humidity to the highest possible absolute humidity. Reason (R): Reading of 100% relative humidity means that the air is totally saturated with water vapour and cannot hold any more, creating the possibility of rain. Codes
16. The mass of water vapour divided by the mass of dry air in a volume of air at a given temperature is called
17. Humidity is the result of
18. Assertion (A): Water vapour is a lighter gas than air at the same temperature, so humid air will tend to rise by natural convection. Reason (R): This is a mechanism behind thunderstorms and other weather phenomena. Codes
19. Assertion (A): The term relative humidity is reserved for systems of water vapour in air. Reason (R): The term relative saturation is used to describe the analogous property for systems consisting of a condensable phase other than water in a noncondensable phase other than air. Codes
20. Because of which one of the following factors, clouds do not precipitate in deserts?
21. The relative humidity of a region is low when
22. Which term is used to describe the amount of water vapour that exists in a gaseous mixture of air and water vapour?
23. All of the following statements are true except:
24. Assertion (A): The amount of water vapour in the air at any given time is usually less than that required to saturate the air. Reason (R): The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density. Codes
25. Humidity refers to

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