Air in water: Air is also present in water. Aquatic animals breathe the air which remains dissolved in water. When water is boiled, air bubbles can be seen coming up from the bottom of the pan. This simple activity shows that air is present in water.

Air is mostly gas The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

Air is present in water and soil. Air is a mixture of nitrogen, oxygen, carbon dioxide, water vapour and a few other gases. Some dust particles may also be present in it. Oxygen supports burning and is necessary for living organisms.

The air present in the empty glass bottle prevents the water from entering it. We conclude that air occupies space. If we tilt the bottle held in water, we will find that the air present in the bottle goes out in the form of air bubbles. As the air from the bottle escapes, water starts entering the glass bottle.

Since air is invisible we easily forget that it is all around us. When we blow air in a balloon, we can feel the air pushing on the balloon. It’s the same with a tire or basketball. When we sit in front of a fan, we can actually feel the air molecules moving in the same direction.

Answer: Five activities which are possible due to the presence of air are as follows:

1. Burning something.
2. Winnowing.
3. Flying kite.
4. Movement of firkin (toy windmill)
5. A ship moving because of sail.

The two primary reasons plants need is air to photosynthesize (make food) and to breathe. Plants need to breathe for the same reason people and animals must breathe – they need oxygen to convert food into energy.

• Paragliding (320)
• Helicopter tours (170)
• Skydiving (96)
• Hot Air Ballooning (82)
• Bungee Jumping (80)
• Scenic Flights (53)
• Microlight flying (42)
• Parasailing (37)

Important Uses of Air

• Sustain life and growth.
• Combustion.
• Maintaining Temperature.
• Supplier of Energy.
• Photosynthesis.

What is air? Air is nothing but a mixture of a variety of gasses. The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.).

There are four categories for air masses: arctic, tropical, polar and equatorial. Arctic air masses form in the Arctic region and are very cold. Tropical air masses form in low-latitude areas and are moderately warm. Polar air masses take shape in high-latitude regions and are cold.

The properties of air are:

• Air takes up space.
• Air has mass.
• Air is affected by heat.
• Air exerts pressure.
• Air can be compressed.
• Air is affected by altitude. Related questions. Mountaineers carry oxygen cylinders with them because: View solution.

Lesson Summary

• Air takes up space. It’s made up of atoms and molecules.
• Air is made of gases, including nitrogen, oxygen, water vapor, and other materials. These substances are what give air mass.
• Air exerts pressure.
• Air has weight.
• Air can be compressed.
• Air is affected by temperature.

Right Answer is: D ∙ Air occupies space. ∙ Air is colourless i.e. it is transparent. ∙ Air has mass. But, air does not have any odour and taste.

It is a compound is not a property of AIR.

Air is all around us, and air is a gas. As the air enters the balloon from your lungs, the air (which is a gas) takes up space in the balloon. The balloon expands because the air inside needs to take up more space. So that is how you can see that air takes up space.

Air is constantly moving around the earth. This moving air is called wind. Winds are created when there are differences in air pressure from one area to another.

Air in the atmosphere moves around the world in a pattern called global atmospheric circulation. This pattern, called atmospheric circulation, is caused because the Sun heats the Earth more at the equator than at the poles. It’s also affected by the spin of the Earth. In the tropics, near the equator, warm air rises.

Wind:Moving air is called wind. Breeze: Slow and gentle moving wind is called breeze. Storm : Fast and strong moving wind is called storm.