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Green house

Notes, Exercises, Videos, Tests and Things to Remember on Green house

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Introduction

The greenhouse effect refers to circumstances where the short wavelengths of visibleLight from the sun pass through a transparent medium ( i.e. envelope of gases CO, CO2, SO2, etc . )and are absorbed , but the longer wavelength of the infrared re - radiation from the heated objects are unable to pass through that medium and are trapped causing more heating and a higher resultant temperature. Greenhouse gas levels have been increasing since the start of the Industrial Revolution. The most contributing greenhouse gases are carbon dioxide, nitrous oxide and methane. But without some greenhouse gases and the greenhouse effect, earth's temperature would be close to -18°C.

Causes

causes
causes

The population of the world is increasing day by day. The population of the world in increasing at the rate of three children per second. The pollution of the world is also increasing. The amount of smoke, dust and greenhouse gases like CO2, N2O, CH4, H2O vapour etc are increasing in the atmosphere as they are produced by industries and vehicles. These gases allow the solar radiation of the short wavelength to escape out from the earth but prevent the solar radiation of the longer wavelength to escape out from the earth. Asa result, this radiation, and various gases are stored in the atmosphere of earth and increase the temperature of the earth.Industries which are involved in cement production,fertilisers, coal mining, etc produce harmful greenhouse gas.Nitrous oxide is one of the greenhouse gas that is used in fertiliser and contributes to the greenhouse effect.

Effects of Green House

The effects of greenhouse on environment are as follows,

  • Greenhouse effects increase the temperature of the earth causing global warming. Global warming effects the environment in various ways like desertification, increases snow melting, increases in sea level and stronger storms and extreme events.
  • Snow melting in the mountains causes flooding during monsoon.
  • An increase in the temperature of the earth causes hurricanes and cyclones in the ocean and seas.
  • As the temperature of the earth increases, it increases the evaporation of water from the farms, sea, lakes and ponds that result in the decrease of crop yield, and causes drought.
  • Greenhouse also affects the climatic balance. Monsoon may even stop altogether or rainfall may be altered.
  • As nitrous oxide is a greenhouse gas, It damages the ozone layer and cause ozone layer depletion.
  • It imbalances the ecosystem.
  • As northern countries get warm due to the greenhouse effect, disease carrying insects migrate north, bringing plague and disease with them.

Artificial Green House

Artificial Green House
Artificial Green House

An artificial greenhouse is a man-made greenhouse. It is a house made of glass or plastic on a metallic frame. It is mainly used to grow offseason plants. In the artificial greenhouse, the glass and plastic allow the only short wave to pass but do not allow longer waves to pass. Here, the glass changes short wave into infrared radiation. The infrared radiation so formed do not escape out through the greenhouse and the temperature inside it increases. In the artificial greenhouse, the artificial temperature is provided to grow the plants. Here, the favourable condition necessary for the growth of plants is provided like climate, light, soil, moisture and other essential conditions. The roof of the artificial greenhouse is made slanted so that maximum solar energy enter through it.

Importance of artificial greenhouse

  • Offseason plants can be grown in all twelve months.
  • Plants can be grown in cold countries where there is less temperature by using the artificial greenhouse.
  • Various types of flower,crops, vegetables and fruits can be grown by this methods.
  • Plants grown by using this method can reduce environment pollution.

Control measures for greenhouse effect

  • The use of materials should be minimized that produce greenhouse gases.
  • The burning of fossil fuel and home residue should be stopped.
  • Afforestation should be done.
  • Alternative sources of energy should be used.
  • We should use eco- friendly material
  • Incineration plant should be established.
  • Pollution should be controlled.



  • Greenhouse effects increase the temperature of the earth causing global warming.
  • The most contributing greenhouse gases are carbon dioxide, nitrous oxide and methane.
  • The population of the world in increasing at the rate of three children per second.
  • Nitrous oxide is one of the greenhouse gas that is used in fertilizer and contributes to the greenhouse effect.
  • Greenhouse also affects the climatic balance. Monsoon may even stop altogether or rainfall may be altered.
  • Greenhouse is made of glass or plastic on a metallic frame. 
  • The roof of artificial green house is made slanted so that maximum solar energy enter through it.
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Questions and Answers

Click on the questions below to reveal the answers

The effects of greenhouse gases are as follows,

  • Greenhouse also affects the climatic balance. Monsoon may even stop altogether or rainfall may be altered.
  • As nitrous oxide is a greenhouse gas, It damages the ozone layer and cause ozone layer depletion.
  • It imbalances the ecosystem.
  • An increase in the temperature of the earth causes hurricanes and cyclones in the ocean and seas.

  • Offseason plants can be grown in all twelve months.
  • Plants can be grown in cold countries where there is less temperature by using the artificial greenhouse.
  • Various types of flower,crops, vegetables and fruits can be grown by this methods.
  • Plants grown by using this method can reduce environment pollution.

Some control measures for greenhouse effect are as follows,

  • Afforestation should be done.
  • Pollution should be controlled.
  • Alternative sources of energy should be used.
  • Burning of fossil fuel should be stopped.

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  • What is green house gas?

    Gas that does not trap heat
    Oxygen that helps plants grow
    Gas that trap heat in atmosphere.
    Gas needed by our body for proper function
  • What is an example of greenhouse effect?

    Inside of a car becoming hot on a warm day.
    Steam rising from boiling water
    Stepping on hot pavement and it burning your feet.
    Baking brownies on a metal pan.
  • Which is not a greenhouse gas?

    Methane
    Gasoline
    Water vapour
    Carbon dioxide
  • What is the layer of the atmosphere that contains greenhouse gases?

    Stratosphere
    Exosphere
    Mesosphere
    Troposphere
  • Greenhouse gases which is present in very high quantity is

    propane
    methane
    carbon dioxide
    ethane
  • Which one of the following is not the control measures for greenhouse effect?

    Deforestation should be done
    The burning of fossil fuel and home residue should be stopped.
    Pollution should be controlled.
    Alternative sources of energy should be used.
  • Which one of the following is not the cause of greenhouse effect?

    Afforestation
    Burning of fossil fuel
    Over pollution
    Harmful gases produced by industries
  • What is the main purpose of establishing artificial greenhouse?

    To pollute the environment
    To grow plants in offseason.
    To boil water using heat
    To burn fossil fuel
  • Artificial greenhouse is made up of

    Iron or aluminium
    Woods
    Glass or plastic
    Bicks
  • Which one of the following is not the effect of greenhouse effect?

    It causes hurricane and cyclones in oceans and seas
    It increases the temperature of earth.
    It helps to grow plants in offseasons
    It causes global warming
  • Which one of the following is greenhouse gas?

    Iron
    Carbon dioxide
    Oxygen
    Nitrogen
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ASK ANY QUESTION ON Green house


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Santosh magar

Advantages and dis advantages of green house


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How it pollite the environment

Nothing


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ddtfg

is nepal a natural greenhouse


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