Admin What is Greenhouse Effect Class 9 Chapter 14?
Notes of Ch 14 Science Class 9: Greenhouse Effect Greenhouse gases like methane, carbon dioxide and nitrogen oxide are present in the atmosphere to stop the heat falling on the Earth and not absorb it. Hence, this keeps it warm and this phenomenon is called the greenhouse effect.
What is green effect?
The Short Answer: The greenhouse effect is a process that occurs when gases in Earth’s atmosphere trap the Sun’s heat. This process makes Earth much warmer than it would be without an atmosphere. The greenhouse effect is one of the things that makes Earth a comfortable place to live.
What is wind and what is its basic cause?
Wind is caused by air flowing from high pressure to low pressure. Since the Earth is rotating, however, the air does not flow directly from high to low pressure, but it is deflected to the right (in the Northern Hemisphere ; to the left in the Southern Hemisphere ), so that the wind flows mostly around the high and low pressure areas.
What are two factors that causes wind?
– (1) Horizontal pressure – gradient, – (2) Rotation of the earth (the Coriolis Force), ADVERTISEMENTS: – (3) Frictional forces, – (4) Centrifugal action of wind.
What is the ultimate cause of wind on Earth?
The ultimate cause of earth’s winds is solar energy. when sunlight strikes Earth’s surface,it heats that surface differently. Newly turned soil, for example,absorbs more heat than does snow. uneven heating of Earth’s surface,in turn, cause difference in air pressure at various locations.
What causes wind to blow naturally?
Wind exists because of differences in air pressure . As sunlight strikes the Earth, it doesn’t heat it equally. It strikes different places at different angles; and some places, such as land, heat more quickly than others, such as oceans.