RRB NTPC Exam 2016 will test you on Green House Effect – the leading cause for Global Warming. Learn about Green House Effect and Take the Quiz that follows.
RRB NTPC Exam 2016 #Daily Infographic on General Science (Environment)
Green House Effect Explained
Green House Effect is defined as , “the trapping of the sun’s warmth in a planet’s lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet’s surface.”
Green House Gases
It is caused by gases in the atmosphere that trap energy from the sun. These heat-trapping gases are called greenhouse gases. The most common greenhouse gases are water vapor, carbon dioxide, and methane. Without the greenhouse effect, Earth would be too cold for life to exist.
Land, oceans, and plants absorb, or soak up, energy from sunlight. They release some of this energy as heat. Greenhouse gases absorb the heat and then send it back toward Earth. Without greenhouse gases, this heat would escape back into space. However with the increased amount of these gases in the atmosphere, the global temperature of the Earth is rising causing Global Warming.
Scientists believe that human activities are increasing the greenhouse effect. When people drive a car or operate a factory they burn coal, oil, and other fossil fuels. This adds extra greenhouse gases to the air, and the extra gases trap more heat. Many scientists think that this has led to Global Warming, or a steady rise in the average temperature of Earth’s surface.
TAKE THE QUIZ ON GREEN HOUSE EFFECT