
What is the boundary between each layer of atmosphere called? How many such boundaries our atmosphere has? Name them.
Important Questions on Air and Atmosphere



Read the following paragraph and answer the questions.
Just above the troposphere is the stratosphere. It extends to about kilometres above Earth's surface. Most of our planet's ozone layer is in this colder, drier layer. The ozone protects life on Earth from the harmful effects of the Sun's ultraviolet rays. It helps provide some of the sun's dangerous radiations from reaching Earth's surface.
Why is it important to protect the stratosphere?

Read the following paragraph and answer the question.
Just above the troposphere is the stratosphere. It extends to about kilometers above Earth's surface. Most of our planet's ozone layer is in this colder, drier layer. The ozone protects life on Earth from the harmful effects of the Sun's ultraviolet rays. It helps provide some of the sun's dangerous radiations from reaching Earth's surface.
What is the importance of the ozone layer?

Read the following paragraph and answer the question.
Just above the troposphere is the stratosphere. It extends to about kilometers above Earth's surface. Most of our planet's ozone layer is in this colder, drier layer. The ozone protects life on Earth from the harmful effects of the Sun's ultraviolet rays. It helps provide some of the sun's dangerous radiations from reaching Earth's surface.
The ozone layer is present between which of the two layers?

Nitrogen, oxygen, and argon are among the primary gases found in the air. Each of these gases is used extensively in industries and the medical field, and in some products used in homes. Oxygen is valued for its support in biological processes and combustion in many industries. Nitrogen is used in food storage to keep packaged or bulk foods fresh, in the manufacturing of electronic parts, and for industrial purposes. Argon is used in industrial processes such as producing high-quality stainless steels and forming impurity-free silicon crystals for semi-conductor manufacture.
Shouldn't we be concerned about protecting the air around us which contains such important gases?

Nitrogen, oxygen and argon are among the primary gases found in the air. Each of these gases is used extensively in industries and medical field, and in some products used in homes. Oxygen is valued for its support in biological processes and combustion in many industries. Nitrogen is used in food storage to keep packaged or bulk foods fresh, in the manufacturing of electronic parts and for industrial purposes. Argon is used in industrial processes such as producing high quality stainless steels and forming impurity-free silicon crystals for semi-conductor manufacture.
How can we reduce air pollution?
