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06. Air And Atmosphere

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Last edited 25 days ago by Learn LoopHQ.

Chapter: 06. Air And Atmosphere

⁠

Moving air is called _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The thin layer of air all around the earth is called the _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The force that binds the layer of air to the surface of the earth is called _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Air has _ _ _ _ _ _ _ _ _ _ _ _ _ _ and occupies space.

Air is _ _ _ _ _ _ _ _ _ _ _ _ _ _, odourless, tasteless, and transparent.

The atmosphere extends to many _ _ _ _ _ _ _ _ _ _ _ _ _ _ above the earth’s surface.

Air can be compressed _ _ _ _ _ _ _ _ _ _ _ _ _ _ and exerts pressure equally in all directions.

In 1774, _ _ _ _ _ _ _ _ _ _ _ _ _ _ proved that air is a mixture of many gases.

Nitrogen makes up approximately _ _ _ _ _ _ _ _ _ _ _ _ _ _ % of the air by volume.

Oxygen is very _ _ _ _ _ _ _ _ _ _ _ _ _ _ in nature and supports burning.

Plants use _ _ _ _ _ _ _ _ _ _ _ _ _ _ to make their food by the process of photosynthesis.

Air contains traces of noble gases like helium and _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The amount of water vapour present in air is called _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The major part of air that does not support burning is _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Limewater is an aqueous solution of _ _ _ _ _ _ _ _ _ _ _ _ _ _.

When a beam of sunlight enters a dark room, dust particles in the air are observed to move in a _ _ _ _ _ _ _ _ _ _ _ _ _ _ way.

Respiration is a _ _ _ _ _ _ _ _ _ _ _ _ _ _ process that takes place in all living organisms.

The taking in of air rich in oxygen is called _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The giving out of air rich in carbon dioxide is called _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Patients in hospitals are often given extra oxygen through _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Soil contains air trapped between its _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Tiny bubbles appear when water is heated slowly, indicating _ _ _ _ _ _ _ _ _ _ _ _ _ _ air in it.

All living organisms (plants and animals) breathe in _ _ _ _ _ _ _ _ _ _ _ _ _ _ and breathe out carbon dioxide.

Soda lime is used to absorb _ _ _ _ _ _ _ _ _ _ _ _ _ _ from the air in experiments.

Burning or combustion is a _ _ _ _ _ _ _ _ _ _ _ _ _ _ change.

Substances that are burned to produce large amount of energy in the form of heat and light are called _ _ _ _ _ _ _ _ _ _ _ _ _ _.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ has been used as a fuel from ancient times, especially in villages.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ is formed when wood is heated in the absence of air.

Both LPG and CNG are considered clean fuels because they do not leave any _ _ _ _ _ _ _ _ _ _ _ _ _ _ on burning.

LPG does not have any smell of its own, so a chemical called _ _ _ _ _ _ _ _ _ _ _ _ _ _ is added to it.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ is a slow process, while burning is a fast process.

Dry ice is the solid form of _ _ _ _ _ _ _ _ _ _ _ _ _ _.

During natural lightning, atmospheric nitrogen combines with atmospheric oxygen to form _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The root nodules of leguminous plants have _ _ _ _ _ _ _ _ _ _ _ _ _ _ bacteria.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ present in the atmosphere protects us from the harmful ultra-violet rays of the Sun.

Air helps _ _ _ _ _ _ _ _ _ _ _ _ _ _ and insects to fly.

Air is a medium for the _ _ _ _ _ _ _ _ _ _ _ _ _ _ of sound.

Windmills move with the help of air and are used to generate _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The reddish-brown flaky substance formed on iron objects due to rusting is called _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The process of rusting continues and makes the object _ _ _ _ _ _ _ _ _ _ _ _ _ _ and useless.

The contamination of air with unwanted substances is called _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Sulphur dioxide, oxides of nitrogen, and carbon monoxide are some common _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The cutting of forests is also known as _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Air pollution can cause respiratory problems and _ _ _ _ _ _ _ _ _ _ _ _ _ _ like headache and eye irritation.

Air pollution affects the rate of _ _ _ _ _ _ _ _ _ _ _ _ _ _ in plants.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ is formed when harmful gases react with water vapour and oxygen to form acids that fall with rain.

The increase in average temperature of the earth’s atmosphere is called _ _ _ _ _ _ _ _ _ _ _ _ _ _.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ react with ozone present in the atmosphere and cause a depletion of the ozone layer.

We should use _ _ _ _ _ _ _ _ _ _ _ _ _ _ petrol in vehicles to reduce pollution.

We should get _ _ _ _ _ _ _ _ _ _ _ _ _ _ check of vehicles for pollution control.

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