Question

Fill up the blanks –

A. Clouds and gases reflect about I of the incoming solar radiation, and absorb some of it but almost half of incoming solar radiation falls on Earth’s surface heating it, while a small proportion is reflected back. Earth’s surface re-emits heat in the form of II radiation but part of this does not escape into space as atmospheric gases (e.g., carbon dioxide, II etc.) absorb a major fraction of it.

B. During the past century, the temperature, of Earth has increased by I most of it during the last three decades. Scientists believe that this rise in temperature is leading to deleterious changes in the environment and resulting in odd climatic changes (e.g. II), thus leading to increased melting of polar ice caps as well as of other places like the Himalayan snow caps.

C. In human eye, cornea absorbs UV-B radiation, and a high dose of UV-B causes inflammation of cornea, called I, cataract, etc. Such exposure may permanently damage the cornea.

• A. A – I – one-fourth, II – infrared, III – methane; B – I – 0.6⁰C, II – EI Nino effect; C – I – snow-blindness
• B. A – I – three-fourth, II – red, III – methane; B – I – 0.6⁰C, II – EI Nino effect; C – I – snow-blindness
• C. A – I – one-fourth, II – infrared, III – methane; B – I – 0.6⁰C, II – Emersion effect; C – I – snow-blindness
• D. A – I – one-fourth, II – red, III – methane; B – I – 0.6°C, II – EI Nino effect; C – I – colour-blindness

Answer 1

Answer: (A)

A – I – one-fourth, II – infrared, III – methane;

B – I – 0.6⁰C, II – EI Nino effect; C – I – snow-blindness