Important Questions for CBSE Class 7 Science Our Environment Chapter 8 - Human Environment Interactions

Very Short Answer Questions:                                                                             1 Mark

1. Fill in the blanks: 

i. The Amazon Basin is located in the continent of South___.

Ans: The Amazon Basin is located in the continent of South America.

ii. In the Amazon basin crops like _____, _____, _____ are produced.

Ans: In the Amazon basin crops like coffee, cocoa, maize are produced.

iii. Varanasi is located on the bank of river ____.

Ans: Varanasi is located on the bank of river Ganga. 

iv. The one-horned rhinoceros is found in ___.

Ans: The one-horned rhinoceros is found in Assam. 

2. State true and false:

i. Assam plain is also called Brahmaputra Plain.

Ans: True

ii. Kolkata and Lucknow are prominent Indian cities situated on the River Ganga.

Ans: True

iii. Birds of Paradise, toucans, and hummingbirds are found in the rainforests of the Amazon.

Ans: True

iv. Crops that are grown by people of the Amazon Basin are tapioca, sweet potato, and pineapple.

Ans: True

3. Match the following: 

Ans:

4. Choose the correct option:

i. Toucans are ____.

a. Birds

b. Animals

c. Reptiles

d. None of the above

Ans: a. Birds

ii. Bengal Tiger is found in______.

a. Delta area

b. Amazon

c. Mountains

d. None of the above

Ans: a. Delta area

5. Define the following:

i. Sericulture

Ans: The rearing of silkworms to produce silk is called Sericulture.

ii. Collage 

Ans: A collage is a piece of art made by pasting various materials such as photographs and pieces of paper on a chart or fabric.

Short Answer Questions:                                                                                     2 Marks

6. What types of trees are Deodars and firs?

Ans: Deodars and firs are the types of coniferous trees. These are cone-bearing seed plants.

7. Where is Kolkata situated?

Ans: Kolkata is an Indian metropolitan city of the Ganga-Brahmaputra plain. It is located on the banks of the River Hooghly which is a subsidiary of River Ganga.

8. Where are Toucans found? 

Ans: Toucans are a type of bird found in the rainforests of the Amazon.

9. Where is Piranha found?

Ans: Piranha is a freshwater fish that is found in South American rivers, lakes, and floodplains.

10. What is sericulture? 

Ans: The rearing of silkworms to produce silk is called sericulture. 

Short Answer Questions:                                                                                     3 Marks

11. What is Kaziranga? Where is it situated?

Ans: Kaziranga can be defined as follows:

i. It is a national park in India.

ii. It is world-famous for one-horned rhinoceros. 

iii. It is also one of the UNESCO world heritage sites.

This national park is situated in the Indian state of Assam.

12. Discuss briefly about the Amazon Basin.

Ans: The Amazon Basin can be briefed as follows:

i. The Amazon Basin is a region in the continent of South America 

ii. It is formed by the drainage of the Amazon River and its tributaries.

iii. It is characterized by thick forests and sunlight is rarely able to penetrate the ground. 

iv. The Amazon basin experiences hot and wet weather throughout the year. Both day and night experience a hot and humid atmosphere. Rainfall can take place anytime in the Amazon basin. In the daytime, the temperature rises, and at night the temperature falls rapidly.

v. This region is also highly enriched with wildlife.  Birds like macaws, toucans, hummingbirds, animals like monkeys, sloths, snakes, and reptiles like anacondas, pythons, crocodiles, and fish species like the Piranha are common here. 

13. How do the basins of Ganga and Brahmaputra affect the distribution of the population?

Ans: It is the varied topography of the Ganga-Brahmaputra basin area which affects the distribution of population. The following points briefs how the population distribution is affected uneven in the concerned area:

i. The mountain areas of the Ganga-Brahmaputra basin have less population in comparison to the plain areas. The mountain areas are less habitable due to steep slopes which make the terrain inhospitable. 

ii. On the other hand, the topography of the plain areas of the basin provides most suitable conditions for the human to survive. The plains are hospitable for human habitation and are also agriculturally productive. Hence, these have a high human population.

14. What do the people of the Ganga-Brahmaputra basin mainly do?

Ans: The people of the Ganga-Brahmaputra basin are mainly engaged in the following things:

i. People in the Ganga and Brahmaputra basin mainly do agriculture. The crops produced in this basin are paddy, wheat, gram, millets, and maize. Cash crops like jute, sugarcane are also produced. In hilly areas, crops are grown on terraces.

ii. Sericulture (rearing of silkworms) and production of silk is also done by many people in this basin.

iii. The towns and cities have industries where people are engaged in different works.

iv. The tourism sector is also very active here and has employed a lot of people.

15. Why do people grow paddy on the basin of Ganga and Brahmaputra plains?

Ans: Paddy is immensely grown by people on the basin of Ganga and Brahmaputra plains because of the following:

i. High rainfall

ii. Ample amount of water supply 

iii. Fertile alluvial soils

Long Answer Questions:                                                                                       5 Marks

16. What is a collage? Explain.

Ans: A collage can be defined as follows:

i. A collage is a piece of art which is by pasting various materials such as photographs and pieces of paper on a chart or a similar backing.

ii. In other words, it is a form of art that involves beautifully gathering pictures and words.

iii. For example, by collecting different images of the mountain landscape, a collage can be created beautifully. The photographs or images can be placed in geometric shapes or even in a random way.

(Students can attempt this question by finding pictures of different landscapes like beaches, mountains, historical places, wildlife sanctuaries, etc., and pasting them to create a collage). 

17. How will you observe that the destruction of trees affects the soil?

Ans: The effects of the destruction of trees on soil can be observed by the following method:

i. Firstly the required materials need to be collected: three small food cans, one big can with holes made in the bottom, twelve coins, and soil. These things can easily be arranged at home or school with the help of a parent or teacher. 

ii. In the next step, the three small cans need to be filled with soil to the top.

iii. Then four coins need to be kept on the soil of every can. 

iv. After filling the cans with holes with water, water is to be sprinkled on the three cans. 

v. The sprinkling of water is to be done at different rates for different cans – slow for the first can, moderate for the second can, and heavy for the third can. 

These are all the steps that we need to carry out to conclude this experiment, the water sprinkled represents rainfall while the coins represent tree covers. As a result of sprinkling water, the unprotected soil splashes out and this occurrence is maximum in the can experiencing heavy water sprinkling or the ‘regions experiencing high rainfall’. It is also observed that the tree covers or the ‘coins’ in this case try to prevent the splashing out of the soil.  Lands that are devoid of vegetation or tree covers will have their soil disappear quickly. Hence, by this simple experiment, anyone can observe how the destruction of trees affects the soil. This activity will help the students in learning that deforestation or the destruction of forests is not good as it will result in the depletion of the soil.

18. Why are the rainforests depleting?

Ans: The rainforests are depleting because of the underlying issues:

i. In the rainforests, developmental activities are going at a fast speed, and the indigenous population is being pushed out, therefore resulting in its depletion.

ii. The deforestation or destruction of the rainforests has adverse impacts on a very large scale. Two of such impacts are the washing away of the topsoil turning the landscape barren. 

19. How is tourism an important activity in the Ganga Brahmaputra plain?

Ans: Tourism is an important activity in the Ganga Brahmaputra plain due to the 

The Ganga-Brahmaputra plain is rich in natural resources. This region has seen the evolution of humans and from past to present major cities have developed in these basins. Due to the development of major cities, there are many such sites which have become famous for some reasons and are now famous tourist attractions. Some of such places include —

i. Historical and ancient sites like the Taj Mahal of Agra, Buddhists stupas in Uttar Pradesh and Bihar, the Imambara in Lucknow, etc.

ii. There are hilly areas of the Ganga Brahmaputra basin rich with scenic places. Mountains and waterfalls are the most scenic places to visit in these areas. For example, many tourists visit the hilly tracts of Arunachal Pradesh to witness its rich tribal culture. 

iii. There are many forested areas rich in wildlife. For example, the Manas and Kaziranga wildlife sanctuaries of Assam. 

iv. There are many holy and cultural sites here where people visit. Example – Varanasi. 

These famous tourist destinations have made tourism an important activity in the Ganga Brahmaputra plain.

20. Discuss about the people living in the rainforests.

Ans: The life of people living in rainforests can be elaborated as follows:

i. The people living in the rainforest live a very miserable life as compared to the people living in other places. 

ii. People grow their crops in very small areas by clearing the trees of the rainforest.

iii. The women practice ‘slash and burn agriculture’ agriculture to grow crops like pineapple, sweet potato, tapioca, and cash crops such as maize, coffee, cocoa. 

iv. The men are mainly engaged in hunting.

v. The staple food of these people is manioc which is a potato-like crop that grows inside the earth.

vi. Queen ants and their eggs are also eaten by them. 

vii. Some people live in thatched houses while some people reside in large houses called ‘maloca’.

viii. With the increasing accessibility of the rainforests by outside people, the lives of these indigenous people have become more difficult. They are pushed out from their native areas and have migrated to new surrounding areas. 

Benefits of Utilizing Vedantu’s Important Questions for CBSE Class 7 Science Our Environment Chapter 8 - Human Environment Interactions 

Vedantu's curated set of important questions for CBSE Class 7 Science Chapter 8 - Human Environment Interactions offers focused insights into crucial environmental dynamics. These inquiries aid students in comprehending human interactions with the environment, fostering a deeper grasp of ecological interplays, crucial for comprehensive learning and exam preparation. Here are few Benefits of Utilizing Vedantu’s Important Questions for CBSE Class 7 Science Our Environment Chapter 8 - Human Environment Interactions : 

• Focus on key topics for efficient studying.

• Prepares students for exams and reduces anxiety.

• Reinforces understanding of fundamental concepts.

• Teaches effective time management.

• Enables self-assessment and progress tracking.

• Strategic approach for higher scores.

• Covers a wide range of topics for comprehensive understanding.

• Supports exam preparation and boosts confidence.

Conclusion

Human-Environment Interactions is an integral part of Class 7 Social Science and plays a crucial role from an examination perspective. The important questions for Class 7 Social, as discussed by NCERT, cover a wide range of topics within the subject. They also provide a concise guide to critical points and details related to the topic.

A solid understanding of each section of class 7 Social is fundamental as it forms the basis for higher-level studies. However, this section primarily focuses on important questions within the context of Class 7 Social Sciences.

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