alleryWhy are clear nights colder than cloudy ones?
AClouds block moonlight
BClouds re-emit infrared heat
CClear air carries more wind
DClouds make air denser
Answer & Solution
Correct answer: B. Clouds re-emit infrared heat
1. At night the ground loses heat as infrared radiation.
2. Clouds are strong absorbers and emitters of infrared, so they return heat.
3. With clear skies this heat escapes to space, so the ground cools faster.
_Source: Wikipedia, Atmosphere of Earth, Emission_
Keep practising Atmosphere of Earth
Browse all Atmosphere of Earth questions for CTET, or explore more Social Studies topics.
Related questions
Which layer of air holds nearly all atmospheric water vapour?At sea level, sound travels through air at roughly how many metres each second?Which atmospheric region is ionised by solar radiation and affects radio waves?The atmosphere reduces the temperature gap between which two?Ozone depletion is caused chiefly by which pollutants?During the Carboniferous period, oxygen reached a peak of about what share?Which organisms caused the Great Oxygenation Event through photosynthesis?About when did free oxygen begin to appear in Earth's atmosphere?