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.
State one method by which :
- Oxygen is added to air
- Carbon dioxide is added to air
- Oxygen is removed from the air
- Carbon dioxide is removed from the air
Give reasons to support the fact that air is a mixture.
Write down the composition of air.
Define the Weather.
Describe the causes and effects of air pollution.
State the utility of carbon dioxide for manufacture of food by plants.
Give the environment effect of three polluting gases with a reason why nitrogen is not considered a polluting gas.
What is moving air called?
How do we get cool water from a clay water pot on hot sunny days?