importance of air and its uses in 500 words in paragraph not in points according to class 9 sense.
Answers
Answer:
Air is a mixture of gases like oxygen, nitrogen and carbon dioxide in higher proportions and much smaller levels of argon, water vapor, and other gases. Living things live and breathe in the clear gas. It has an indefinite shape and volume. It has no color or smell. Air is a matter so it has mass and weight. The weight of air creates atmospheric pressure. The Components of air are 78% nitrogen, 21% oxygen, 0.9% argon, 0.04% carbon dioxide, and very small amounts of other gases and water vapor. In aerobic respiration, animals need to breathe the oxygen in the air. In breathing, we inhale oxygen which reaches the lungs and from lungs blood capillaries absorb oxygen and carbon dioxide is breathed out into the air. Plants need carbon dioxide for photosynthesis.Important Uses of Air
Air is a natural resource and is available abundantly. It is an essential element of nature that support life on earth. Air is equally important for living organisms for their survival just like water. Air is very useful and has many applications. Uses of air are as follows:
Sustain life and growth
Combustion
Maintaining Temperature
Supplier of Energy
Photosynthesis
Sustain Life and Growth
Oxygen present in the air is one of the main life-sustaining gas. All living things breathe in and breathe out the air in the form of oxygen and carbon dioxide. Nitrogen and Carbon dioxide are vital for plants and their growth.
Combustion
Another use of air is that it supports burning or combustion. The oxygen present in air help in the burning of the fuels leads to carry out activities like cooking food, running industries, and vehicles as well as generating heat and electricity.
Temperature Control
Air helps in maintaining the temperature on the earth’s surface by circulating hot and cold air. Air acts as a conductor of heat. The phenomena of the water cycle are also dependent on air.
Supplier of Energy
Air which consists of energy is one of the main suppliers of energy. Living things are made up of cells and these cells extract oxygen within the blood to produce energy in the form of ATP. The generation of ATP which is biochemical in nature is essential to maintain life on the Earth.
Photosynthesis
Carbon dioxide which is also a component of air is used by plants during the process of photosynthesis and oxygen, water vapor is released by plants as a by-product.
Apart from these gases, other gases are also useful such as nitrogen is used in the production of ammonia.
Biological Uses of Air
All organisms present on Earth require air to sustain themselves. Among all the gases oxygen and nitrogen are two gases that are used by organisms to fuel their cells. During respiration oxygen is inhale into the lungs and then release into the bloodstream and oxygen is distributed in all cells of the body.
The cells present in the body by the process of cellular respiration use oxygen to sugar and release energy. Humans have found ways in which to pressurize air, allowing people to combat the elevation sickness experienced when moving into high-elevation areas.
Power Generation and Mechanics
Air plays an important role in the generation of electrical power. Windmills use air to create power directly, air when passed through a large turbine, it generates electricity. Some sensitive mechanical drive systems use controlled pressurized air to move machinery.
Air pollution is the result of uses for air in an improper manner. It plays a crucial role in supporting life on earth, people take air for granted. Air is invisible which surrounds the planet, many companies do not pay attention to the waste material which they are releasing into the air causes air pollution. We should pay some attention to how we pollute our environment and take some serious action to protect our environment.
Answer:
Air is the constant pressure that we feel around us but can never see. The observable effects of air can be seen throughout nature, through the swaying of the plants and the trees. The air when flows with speed and pressure is called as a breeze. Even though we cannot see air with our naked eyes, we can still feel it being around us at all times, we also known for certain that without air, life itself would not exist.In earlier times, the air was thought to be one single substance but now it is known that air is a mixture of many gases. A mixture of 2 vital gases mainly Nitrogen and Oxygen in a certain percentage is what allows us to live in such a sustainable condition on planet earth.
Importance of Air
We all need oxygen for respiration. The animals that live both on land and even the aquatic animals need oxygen to exist otherwise they would all perish. Air is the fundamental building block, apart from which life itself would not exist. Bubbles in water only occur due to the small concentration of air, that gets trapped in the small bubbles.
If we take a lump of dry soil and add water to it, bubbles will be observed which indicates the presence of air molecules. Water displaces the air present in the soil and hence bubbles are formed. The organisms living in the soil respire through oxygen present in this air. Animals living in soil form holes and burrows. These burrows make space for air molecules to move in. When it rains, water fills up the vacant spaces and this is the reason why we see organisms like earthworms coming up the soil for air during the rainy season.
We use oxygen all the time but it is still not exhausted because trees return this oxygen to the atmosphere during the process of photosynthesis. Plants also consume oxygen but their consumption is very less than compared to their production. Hence, the net effect is that they add oxygen to the atmosphere. Animals and plants are interdependent on each other for their survival, plants produce oxygen and animals produce carbon dioxide as a by the process, thus they exist with one other forming an ecosystem of their own. However, due to man-made contributions to the environment and ecosystem such as deforestation and factories that release smog, smoke, and other chemical components into the air, thereby polluting the air. This is called Air Pollution.
Air has a lot of different uses that make it an important and essential necessity in our everyday life, without air Earth would be just like the other lifeless planets in our solar system, without any plants, animals or living beings. Without air; life itself would cease to exist. Without air, plants would be unable to keep up with the process of photosynthesis and without them, animals who are completely dependent on plants for their survival would perish too. Besides this, there would be no sound if air did not exist, and we would be surrounded in a vacuum bubble. Apart from this, the pollination of crops would not happen and thus, there would be no crops or food for us. Thus, air is the biggest essential factor that is necessary for the survival of any living species.