What is ozone and how does it affect any ecosystem? - Science


What is ozone and how does it affect any ecosystem?


Solution 1

Ozone (O3) is a molecule, made up of three atoms of oxygen.
Ozone (O3) forms a layer in the upper atmosphere. It is very essential for the life on this planet. It shields the surface of the earth from ultra-violet radiation (UV) coming from sun as these radiations are very harmful causing skin cancer and cataract in humans. It also does harm to the crops.

Solution 2

Ozone (O3) is a molecule formed by three atoms of oxygen. Ozone, is a deadly poison. However, at the higher levels of the atmosphere, ozone performs an essential function. It shields the surface of the earth from ultraviolet (UV) radiation from the Sun. This radiation is highly damaging to organisms, for example, it is known to cause skin cancer, cataract and damage the immune system in human beings. It also destroys plants and reduces photosynthesis process.

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Chapter 15: Our Environment - Intext Questions [Page 264]


NCERT Science Class 10
Chapter 15 Our Environment
Intext Questions | Q 1 | Page 264

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What is the function of ozone in the upper atmosphere?

Ozone depletion is occurring widely in the stratosphere; it leads to an ozone hole caused mainly due to ______.

The harmful radiations absorbed by the ozone layer are ______.

What are the causes of depletion of ozone layer? Which diseases are likely to be caused if the ozone layer will become thinner?

What is ozone? 

Which class of carbon compounds is responsible for the depletion of ozone layer at the higher level of the atmosphere?

Which compounds are responsible for the depletion of ozone layer?

Give scientific reasons:

Ozone present in the stratosphere is called as “good ozone”.

What would be the effects on widening of ozone hole?

Why is ozone layer called ozone umbrella/shield?

How are CFCs harmful?

Briefly explain depletion of ozone layer and its effects.

Explain what is smog. Give its effects.

Explain ozone layer, its depletion and effects of ozone depletion.

Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?

The following picture depicts a certain phenomenon.

Name the phenomenon and explain it.

Describe the methods of saving the ozone layer.

‘There is a hole in the ozone layer’. What do you understand by this?

The depletion of the ozone layer is due to ______.

Discuss in detail the process of ozone depletion.

Is ozone depletion related to global warming?

Which Gas is present in large amount in the upper part of stratosphere.

Number of Oxygen atom in Ozone.

The chemicals leading to the formation of ozone holes.

Fill in the Blanks:

The ______ is the layer of the atmosphere that contains the protective ozone layer

Fill in the Blanks:

______ is manmade compounds that have been widely used as refrigerants and in spray propellants and foam blowing.

True or False:

Ozone in the Troposphere is a harmful pollutant.

Ozone is abundant in this layer. Ozone heats this layer as it absorbs from incoming ultraviolet radiation from the sun:

What is an ozone layer. State the distribution of the ozone layer in the stratosphere.

How is the ‘ozone oxygen cycle’ maintained in the stratosphere and state what disturbs the balance, resulting in ozone depletion or destruction, Give balanced equation for the same.

Enumerate the damage to humans, animals and plants caused due to ozone depletion.

Enumerate methods of protecting the ozone layer and preventing its depletion.

State how CFCs break ozone in the stratosphere.

Give reason for the following:

The formation of ozone involves a chemical reaction called photolysis.

Give reason for the following:

Destruction of ozone layer is harmful for both humans and plants.

Name or state the following:

An atmospheric pollutant responsible for both global warming and ozone depletion.

Name or state the following:

The atom which reacts with oxygen to form ozone.

Long answer type question

Montreal protocol is an essential step. Why is it so?

Which spectrum of the light harmful to organism: ____________.

Bad ozone is present in ______

The substance which is chiefly responsible for the depletion of ozone layer is ______.

Global warming is a phenomenon related to ______.

A motor car, with its glass totally closed, is parked directly under the sun. The inside temperature of the car rises very high. Explain why?

______ was signed in 1987 to control emission of ozone depleting substances.

State the essential function performed by ozone at the higher levels of the atmosphere.

World Ozone day is celebrated on ______.

What is exactly measured in Dobson units or DU?


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