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What is Air?
Air is one of our precious natural resources as it provides oxygen, which is vital to all living creatures. Air is responsible for the change in climate as it plays a role in the heat exchange of winds, thus creating an atmosphere to live in. Hence, it is essential to understand the role of air in climate change. Getting Natural Resources Homework Help is very easy, fill in the form and send it now.
Natural Resources
For the existence of life, we depend on various factors such as the sun, water, air, soil, and land. Resources like land, water, and air are obtained from our planet Earth. The outer crust of the earth is called the lithosphere. Another layer is made up of air and other inert gas which covers our planet globally and is defined as the atmosphere. 75% of our planet's surface is composed of water.
This layer of the earth is defined as the hydrosphere. A combination of lithosphere, atmosphere, and hydrosphere results in the existence of life and living beings. The land where life exists is defined as the biosphere.
Importance of Air:
All living creatures require oxygen for their normal living process such as respiration, metabolic activities, etc. Air on our planet is made up of 21% oxygen and 0.03% carbon dioxide. However, the air present on other planets like Mars and Venus contains about 95-97% carbon dioxide, and hence no life exists on those planets.
What is Climate Change?
Air is a bad conductor of heat. The heat caused by the sun and its radiation during daylight hours results in heating up the water present in water bodies like the sea, ocean, lakes, and ponds. The radiation of the sun heats up the land and the sun’s heat is reflected back to the atmosphere, thus making the air above the land hot. The heated water from the water bodies results in the formation of water vapor, thus making the air above the water bodies cooler.
The formation of hot air and cool air in the atmosphere results in the setting up of convection currents in the air. The convection currents are responsible for exchanging the hot and the cold air. In the evening, the hot air present in the atmosphere is pushed off outside the earth and the cool air above water bodies is pushed towards the land area, thus resulting in cooling off the air present in the earth.
The water vapor present in the air also contributes to the cooling of the air. Water vapor is gradually collected in the form of clouds and further condensation which results in rainfall on the land.
Uneven heating from various regions of the earth changed the direction of winds, and rotation of the earth, and the rise in the level of water causes changes in climate.
The atmosphere in the coastal regions:
Cities that have beaches and the sea follow a pattern of heat exchange in the air. The air above the land is heated and the air in the atmosphere creates low pressure. The air present above the sea moves into the area of low pressure.
Thus during the day, the direction of the air is from sea to land. During the nighttime, the air above the land and water is cool. But as the water cools down slower than land, the air above water would be warmer compared to that of land.
