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The Greenhouse Effect

Greenhouse Effect

The greenhouse effect is a phenomenon without which life wouldn't be possible. This process consists of a warming effect of the so called greenhouse gases, compounds present in the air in relatively low concentrations (carbonium dioxide, methane vapour, etc.). The Greenhouse gases allow radiation to pass through the radiated atmosphere while avoiding part of infrared radiation from the Earth's surface and lower atmosphere to go into space, effectively acting like glasses of a greenhouse and help to regulate and maintain the temperature of the earth warm.

This process is always done naturally: thanks to it the temperature of the earth is approximately 33 ° C warmer than it would be without the presence of these gases. Now, however, the climate of the Earth is destined to change because of human activities, which are altering the chemical composition of the atmosphere.

The enormous anthropogenic emissions of greenhouse gases are causing an increase in global temperature by determining, as a result, the deep climate changes both at global and local levels. Before the Industrial Revolution, the man released very few gases into the atmosphere, but now the population growth, the use of fossil fuels and deforestation highly contribute to change the composition of the atmosphere.


Experiment on greenhouse effect

Multiple choice questions


The greenhouse effect is...


a natural phenomenon

a natural phenomenon, but increased by human activity

only due to human activities

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In absence of the greenhouse effect, the earth would be...


zero degrees

much colder, below zero degrees

much hotter, more than 50 degrees

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