What is air for 2nd grade?
Air is a tasteless, odorless and invisible mix of gases that is primarily made up of oxygen and nitrogen. There are layers of air that cover the earth, which is known as the atmosphere.
What is air made of Class 2?
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.
How do you explain air to a child?
Air is a mixture of many gases and dust particles. It is the clear gas in which living things live and breathe. It has an indefinite shape and volume. It has mass and weight, because it is matter.
Who needs air class 2?
Humans, animals, plants need air to breathe. Wind moves the fan of windmill. It helps to dry wet clothes. Air helps to feel cool under the fan.
How is air useful to us Class 2?
The air gives energy for the function of living things. Plants get their food from the event of Photosynthesis. Photosynthesis happens with the help of oxygen. Nitrogen is very useful for the growth of plants as well as trees.
What are the 5 uses of air?
Important Uses of Air
- Sustain life and growth.
- Maintaining Temperature.
- Supplier of Energy.
What are 5 facts about air?
Air is mostly gas. Air is all around us, but we can’t see it.
What is called air?
Air is a mixture of many gases and tiny dust particles. It is the clear gas in which living things live and breathe. It has an indefinite shape and volume. It has mass and weight, because it is matter. The weight of air creates atmospheric pressure.
Why do we need fresh air for Class 2?
Lungs need fresh air to be healthy. Dust, smoke, germs make air impure.
What are 10 uses of air?