Environment

Environment - Long Answer Questions

Q1. What is 'Environment'?

Everything that we see in our surroundings is called environment. It is our basic life support system. It provides the air we breathe, the water we drink, the food we eat and the land where we live.

Q2. What are the components of the Environment?

Three types: 1. Natural (Land, Air, Water, Living things). 2. Human-made (Buildings, Parks, Bridges, Roads, Industries). 3. Human (Individual, Family, Community, Religion, Education).

Q3. What is the 'Lithosphere'?

The solid crust or the hard top layer of the earth. It is made up of rocks and minerals and covered by a thin layer of soil.

Q4. What is the 'Hydrosphere'?

The domain of water. It comprises various sources of water and different types of water bodies like rivers, lakes, seas, oceans, etc.

Q5. What is the 'Atmosphere'?

The thin layer of air that surrounds the earth. The gravitational force of the earth holds the atmosphere around it. It protects us from harmful rays and scorching heat of the sun.

Q6. What is the 'Biosphere'?

Plant and animal kingdom together make the biosphere or the living world. It is a narrow zone of the earth where land, water, and air interact with each other to support life.

Q7. What is an 'Ecosystem'?

It is a system formed by the interaction of all living organisms with each other and with the physical and chemical factors of the environment in which they live, all linked by transfer of energy and material.

Q8. How do human beings modify the environment?

They cut forests to grow crops, build cities, establish factories, and manufacture cars that pollute the air.

Q9. What is the difference between Biotic and Abiotic?

Biotic: The world of living organisms (e.g., plants and animals). Abiotic: The world of non-living elements (e.g., land).

Q10. Why is our environment changing?

It is all because of our needs. Our needs are increasing day by day; we are therefore modifying and at times even destroying our natural surroundings.

Q11. What is the Barter System?

A trade in which goods are exchanged without the use of money.

Q12. When is World Environment Day celebrated?

On 5th June every year.

Q13. What is the origin of the word 'Environment'?

From the French word 'Environer' meaning 'neighbourhood'.

Q14. Give examples of Lithosphere.

Mountains, plateaus, plains, valleys.

Q15. Why is the Atmosphere important?

It interacts with solar radiation and modulates the climate. Weather changes such as rain and snow are due to the atmosphere.

Q16. What defines a Desert Ecosystem?

Scarcity of water, extreme temperatures, camels, cactus, and minimal vegetation.

Q17. How did early humans interact with the environment?

They led a simple life and fulfilled their requirements from the nature around them. They did not modify it much.

Q18. What caused the Industrial Revolution?

The need for large-scale production, faster transportation, and information communication drastically altered the environment.

Q19. What is a balanced relationship?

A perfect balance is necessary between the natural and human environment. Humans must learn to live and use their environment in a harmonious way.

Q20. Why does a watermelon taste best in summer?

Because nature provides seasonal fruits that suit the body's needs for that season (hydration).

Environment - Important Facts

Fact 1

Environment is our basic life support system.

Fact 2

French word Environer means neighbourhood.

Fact 3

World Environment Day is on 5 June.

Fact 4

Lithosphere is the hard top layer of earth.

Fact 5

Hydrosphere is the domain of water.

Fact 6

Atmosphere is the thin layer of air.

Fact 7

Biosphere is the zone of life.

Fact 8

Gravitational force holds the atmosphere.

Fact 9

Ecosystem involves energy transfer.

Fact 10

Rainforests are a type of ecosystem.

Fact 11

Grasslands are a type of ecosystem.

Fact 12

Deserts are a type of ecosystem.

Fact 13

Aquarium is an artificial ecosystem.

Fact 14

Barter system uses no money.

Fact 15

Industrial revolution started large scale production.

Fact 16

Information revolution made communication easy.

Fact 17

Early humans were hunter-gatherers.

Fact 18

Wheel invention changed transportation.

Fact 19

Surplus food production led to trade.

Fact 20

Humans modify environment for agriculture.

Fact 21

Humans modify environment for settlement.

Fact 22

Pollution is a human creation.

Fact 23

Global warming is due to atmosphere changes.

Fact 24

Plastic is non-biodegradable.

Fact 25

Ravi in the story was sad about the playground.

Fact 26

Environment includes people and things.

Fact 27

Biotic means living.

Fact 28

Abiotic means non-living.

Fact 29

Ocean water is salty.

Fact 30

Fresh water is necessary for survival.

Fact 31

Soil covers the lithosphere.

Fact 32

Minerals are found in lithosphere.

Fact 33

Valleys are landforms.

Fact 34

Plateaus are landforms.

Fact 35

Animals are part of the biosphere.

Fact 36

Solar system is not an ecosystem (too big/vague).

Fact 37

Pond is a small ecosystem.

Fact 38

Camel is called ship of the desert.

Fact 39

Lotus grows in water (hydrophyte).

Fact 40

Cactus grows in deserts (xerophyte).

Fact 41

Humans rely on environment for raw materials.

Fact 42

Deforestation harms the ecosystem.

Fact 43

Conservation is protecting the environment.

Fact 44

Reduce, Reuse, Recycle is the mantra.

Fact 45

Urbanization destroys natural habitats.

Fact 46

Sustainable development is the key.

Fact 47

Nature has a regenerative capacity.

Fact 48

Over-exploitation exceeds regeneration.

Fact 49

Ozone layer is in the atmosphere.

Environment - Important Dates/Terms

1. 5 June

World Environment Day

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