what is air ? say this with an example?
Answers
Answer:
an air is a nature which we cant see but we can enjoy.
Explanation:
air is a universal and nature solvent if air stoops we cant be alive.
HEYA, BUDDY !!
→ The Air is present all around us. However, we cannot see it and we can only feel its presence.
→ For example, if we flap a hand fan near our face, we will feel the air and if we ride a bicycle, we will feel the air against our face. A mixture of various gases such as nitrogen, oxygen, carbon dioxide, water vapour and a few other gases is called air. Air may contain some dust particles and oxygen present in the air to support burning. Air is necessary for the survival of living organisms including plants, animals and microorganisms. The absence of air can lead to their death.
We know that, Air is made up of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and other gases in meager amounts. Water vapor is also a constituent of air in varying amounts along with dust particles. The molar mass of dry air or air with no/low quantity of water vapor in it is 28.97g/mol.
→ The Nitrogen gas is the main component of air.
Know more,
Let’s understand some of the terms related to or present in the air around us are :-
Water Vapour: It is the gas formed as the result of heating up water. The heat of the sun changes the water into water vapour. The Sun changes the water in the lakes, ponds, rivers and seas into water vapour. Then this water vapour mixes with the air and thus air contains water vapour.
Smoke: It is dark-coloured gas that is given out when something is burnt. Factories and vehicles are the major sources of smoke that mixes with the air and makes it dirty. Another example is burning fire cracked that produces smoke; breathing in smoke is harmful to our body.
Dust: It is a dry, powdery form of dirt present in the air. If we want to see the presence of dust in the air, we can do a small experiment. Close all the doors and windows of a room during the day and pull off the curtains, and allow sunlight to enter through a tiny gap. What do we see? We will see tiny things in the air which are movable in the light. It is called dust present in the air around us.
Germs: These are tiny living things growing in dirty places and have the power of making people ill. So, dirty air makes us sick. When a person sneezes, germs from his or her mouth mixes with the air. This air may enter another person and make them sick too. So, it is always advised to cover our mouth when we sneeze or cough
HOPE IT'S HELPS ^-^