MEDIUM
5th CBSE
IMPORTANT
Earn 100

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

EASY
5th CBSE
IMPORTANT
How are 'pauses' different from the 'layers' of the atmosphere?.
MEDIUM
5th CBSE
IMPORTANT
Think and write an experiment to show that air has mass.
EASY
5th CBSE
IMPORTANT
If you were to send a bottle rocket 15 kilometres up into the air, which layer of the atmosphere would it be in?
MEDIUM
5th CBSE
IMPORTANT

Read the following paragraph and answer the questions.

Just above the troposphere is the stratosphere. It extends to about 50 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?

EASY
5th CBSE
IMPORTANT

Read the following paragraph and answer the question.

Just above the troposphere is the stratosphere. It extends to about 50 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?

EASY
5th CBSE
IMPORTANT

Read the following paragraph and answer the question.

Just above the troposphere is the stratosphere. It extends to about 50 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?

EASY
5th CBSE
IMPORTANT

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?

MEDIUM
5th CBSE
IMPORTANT

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?