Heating and cooling of the atmosphere

Q: Why does temperature remain relatively higher on a cloudy night?

Because clouds trap terrestrial radiation Clouds trap longwave radiation and reduce heat loss. Exam tip: remember the night effect of clouds.

Q: Why does a surface cool during evaporation?

Because heat is used to convert water into vapour Evaporation takes latent heat and cools the surface. Exam tip: understand it through cooling by sweat.

Q: What happens when water vapour changes into water droplets?

Latent heat is released The direct answer is D, latent heat is released. When water vapour changes into liquid droplets, the process is condensation. During evaporation, water absorbs energy; during condensation, that stored latent energy is given back to the surrounding air. Step by step: moist air cools; vapour changes into droplets; molecular energy is released; clouds may form and the nearby air is warmed. Option A is wrong because solar energy does not simply end during condensation. Option B is unrelated: Earth does not stop. Option C is impossible and unrelated: air does not become zero. Option D is correct because condensation releases latent heat. This released energy can support cloud development and atmospheric motion. Memory cue: evaporation absorbs latent heat; condensation releases it.

Q: Why does land surface heat faster than water?

Land has lower heat capacity Land changes temperature quickly with less heat. Exam tip: explain land-water temperature difference by heat capacity.

Q: Why does sea temperature change slowly?

Because water has high heat capacity Water stores more heat, so it heats and cools slowly. Exam tip: connect marine influence with this property.

Q: Which temperature pattern is most characteristic of a coastal location compared with an inland location at the same latitude?

Smaller annual range of temperature Correct answer: A. A coastal place usually has a smaller annual range of temperature than an inland place at the same latitude. The reason is that water has a greater heat capacity than land: it needs more energy to warm and loses heat more slowly when cooling. The sea therefore moderates nearby temperatures, reducing the contrast between summer and winter. B is wrong because coastal places are not necessarily hot throughout the year; a cold current or local winds may make them cool. C is wrong because coastal temperature still changes daily and seasonally, only less strongly on average. D is wrong because coastal places receive sunlight. Memory cue: land heats and cools quickly; water changes slowly, so coasts have milder extremes.

Q: Why can temperature range be greater in continental interiors?

Because land heats and cools quickly Away from sea, land areas can change temperature rapidly. Exam tip: connect continentality with higher temperature range.

Q: Generally, what happens to temperature as altitude increases?

Temperature decreases The atmosphere is mainly heated from below, so temperature decreases upward. Exam tip: link it with normal lapse rate.

Q: What does normal lapse rate show?

Rate of temperature decrease with height Lapse rate shows temperature change with height. Exam tip: connect it with vertical temperature distribution.

Q: What is the feature of temperature inversion?

Temperature may increase with height In inversion, the normal lapse rate is reversed. Exam tip: remember cold air below and warm air above.

01Why does temperature remain relatively higher on a cloudy night?

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Answer and explanation

Correct answer: B. Because clouds trap terrestrial radiation

Clouds trap longwave radiation and reduce heat loss. Exam tip: remember the night effect of clouds.

Practice questions

01Why does temperature remain relatively higher on a cloudy night?रात में बादल वाली स्थिति में तापमान अपेक्षाकृत अधिक क्यों रहता है?

02Why does a surface cool during evaporation?वाष्पीकरण के समय सतह ठंडी क्यों होती है?

03What happens when water vapour changes into water droplets?जलवाष्प के जल बूंद में बदलने पर क्या होता है?

04Why does land surface heat faster than water?स्थल सतह जल की तुलना में जल्दी गर्म क्यों होती है?

05Why does sea temperature change slowly?समुद्र का तापमान धीरे क्यों बदलता है?

07Why can temperature range be greater in continental interiors?महाद्वीपीय आंतरिक भागों में तापांतर अधिक क्यों हो सकता है?

08Generally, what happens to temperature as altitude increases?सामान्यतः ऊंचाई बढ़ने पर तापमान में क्या परिवर्तन होता है?

09What does normal lapse rate show?सामान्य ताप ह्रास दर किस बात को बताती है?

10What is the feature of temperature inversion?तापमान प्रतिलोमन में क्या विशेषता होती है?

11Why does the chance of frost increase on a clear calm night?साफ शांत रात में पाला बनने की संभावना क्यों बढ़ती है?

12Why does the day's maximum temperature often occur after noon?दिन का अधिकतम तापमान अक्सर दोपहर के बाद क्यों आता है?

13When is the daily minimum temperature usually found?दिन का न्यूनतम तापमान प्रायः कब मिलता है?

14Which energy is more important in the greenhouse effect?हरितगृह प्रभाव में कौन सी ऊर्जा अधिक महत्वपूर्ण है?

15Which gas contributes to the greenhouse effect?कौन सी गैस हरितगृह प्रभाव में योगदान देती है?

16How does water vapour help keep the atmosphere warm?जलवाष्प वायुमंडल को गर्म रखने में कैसे मदद करता है?

17Why are desert nights often cold?मरुस्थल की रातें अक्सर ठंडी क्यों होती हैं?

18Why does a black road feel hotter during the day?काली सड़क दिन में अधिक गर्म क्यों महसूस होती है?

19Why does a white or snowy surface heat less?सफेद या बर्फीली सतह कम गर्म क्यों होती है?

20Why can cities be warmer in the urban heat island effect?शहरी ऊष्मा द्वीप प्रभाव में शहर अधिक गर्म क्यों हो सकते हैं?

21How can vegetation help reduce local temperature?पेड़ पौधे स्थानीय तापमान घटाने में कैसे मदद कर सकते हैं?

22Heat balance shows balance between what?ऊष्मा संतुलन किसके बीच संतुलन को दर्शाता है?

23Outgoing heat from Earth is mainly in which form?पृथ्वी से बाहर जाने वाली ऊष्मा मुख्यतः किस रूप में होती है?

24Shortwave radiation is related to what?अल्पतरंग विकिरण किससे जुड़ा है?

25Longwave radiation is related to what?दीर्घतरंग विकिरण किससे जुड़ा है?

Analytics choices

01Why does temperature remain relatively higher on a cloudy night?

02Why does a surface cool during evaporation?

03What happens when water vapour changes into water droplets?

04Why does land surface heat faster than water?

05Why does sea temperature change slowly?

07Why can temperature range be greater in continental interiors?

08Generally, what happens to temperature as altitude increases?

09What does normal lapse rate show?

10What is the feature of temperature inversion?

11Why does the chance of frost increase on a clear calm night?

12Why does the day's maximum temperature often occur after noon?

13When is the daily minimum temperature usually found?

14Which energy is more important in the greenhouse effect?

15Which gas contributes to the greenhouse effect?

16How does water vapour help keep the atmosphere warm?

17Why are desert nights often cold?

18Why does a black road feel hotter during the day?

19Why does a white or snowy surface heat less?

20Why can cities be warmer in the urban heat island effect?

21How can vegetation help reduce local temperature?

22Heat balance shows balance between what?

23Outgoing heat from Earth is mainly in which form?

24Shortwave radiation is related to what?

25Longwave radiation is related to what?