Advertisements
Advertisements
प्रश्न
Discuss two useful applications of greenhouse effect.
उत्तर
Two useful applications of greenhouse effect are:
1. Growing vegetables and flowers in snow-bound regions:
Sheds using glass walls are built which allow smaller wavelength of solar heat radiations to pass into the shed but does not allow the longer wavelength of heat radiations to pass out during night. This keeps the shed reasonably warm for flowers and vegetables to grow.
2. Use of glass in keeping homes warm:
In cold countries, the glass windows and doors allow the smaller wavelength of heat radiations of solar energy to pass into the rooms but does not allow longer wavelength of heat radiations to pass out. Thus, greenhouse effect takes place and rooms keep reasonably warm.
APPEARS IN
संबंधित प्रश्न
List any three human activities that you think would lead to air pollution.
Give one use for the following inert gase :
neon
Name the products formed when a candle burns in air.
Write down the composition of air.
State the utility of –
(a) Water vapour
(b) Rare or inert gases present in the air.
Tick the object which gives out water vapour.
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
How do we get cool water from a clay water pot on hot sunny days?
CO2 turns calcium hydroxide solution to a milky white solution.
Marked temperature changes in the aquatic environment can affect
During summer, if you go near the lake, you feel relief from the heat, why?