Environmental Management Book Back Questions 10th Science Lesson 22

10th Science Lesson 22

22] Environmental Management

Book Back Questions with Answer and Do You Know Box Content

Do You Know?

Chipko movement: The Chipko movement was a non-violent agitation in 1973 that was aimed at protection and conservation of trees. The name of the movement ‘Chipko’ comes from the word ‘embrace’, as the villagers hugged the trees and encircled them to prevent them from being cut. The movement originated in the Chamoli district of Uttar Pradesh (now Uttarakhand). The protest of Chipko movement achieved a major victory in 1980 with a 15-year ban on cutting trees in the Himalayan forests.

Jim Corbett National Park was the first to be established in 1936 in Uttarakhand, India. There are 15 biosphere reserves in India. The Nilgiris is a biosphere reserve in Tamil Nadu.

RathikaRamasamy, a native of Venkatachalapuram village, Theni District in Tamil Nadu was the first Indian woman to strike an International reputation as wildlife photographer. Her passion is towards bird photography. A photobook on wildlife titled “The best of wildlife moments” was published in November 2014.

Wildlife Conservation Initiatives in India: Project Tiger and Project Elephant has been launched in 1973 and 1992 respectively. Crocodile Conservation Project was launched in 1976. Sea Turtle Conservation Project was launched in 1999. Indian Rhino Vision 2020 is to conserve at least 3000 greater one-horned rhinos in Assam, India by 2020.

India is the third largest consumer of crude oil in the world, after the United States and China.

Case study of Taj Mahal: The Taj Mahal is one of the seven wonders of the world and is located in Agra, Uttarpradesh. It is built with white marble. The Mathura oil refinery owned by Indian Oil Corporation present around this area produce sulphur and nitrogen oxides. The white marble became yellow due to air pollution. The Government of India has set up emission standards around the monuments to protect it from the damage.

A capacity of 100 litres solar heater can save upto 1500 units of electricity per year.

India has identified six basins as areas for shale gas exploration: Cambay (Gujarat), Assam – Arakan (North East), Gondwana (Central India), Krishna Godavari onshore (East Coast), Cauvery onshore and Indo-Gangetic basins.

The world’s largest and tallest wind turbine is situated in Hawaii. One wind turbine can produce electricity for 300 homes.

Kallanai Dam, also known as Grand Anicut, is the fourth oldest dam in the world, constructed by King KarikalaChola of the CholaDynasty in the 2^nd century A.D. (CE). It still serves the people of Tamil Nadu, The dam is located on the River Kaveri, approximately 20 km from the city of Tiruchirapalli.

E-wastes include: Computer components – 66%, Telecommunication components – 12%, Electric components – 5%, Biomedical components – 7%, Other components – 6%

Health effects of E-wastes:

Lead: Damages central and peripheral nervous system; affect brain development in children.

Chromium: Asthmatic bronchitis.

Cadmium: Accumulates in kidney and liver; neural damage

Mercury: Chronic damage to brain and respiratory system.

Plastics including Polyvinyl Chloride (PVC) : Burning produces dioxin which can cause developmental and reproductive problems, damages the immuns system.

Fill in the blanks:

1. Deforestation leads to ______________ in rainfall.

1. Increase
2. Decrease
3. Remains the same
4. None of the above

2. Removal of soil particles from the land is called ______________

1. Soil erosion
2. Soil degradation
3. Soil Preparation
4. None of the above

3. Chipko movement is initiated against ______________

1. Cutting down of trees
2. Planting of trees
3. Transplanting of trees
4. None of the above

4. ________________ is a biosphere reserve in Tamil Nadu.

1. Point calimere
2. Mudumalai
3. Mudanthurai
4. Nilgiris

5. Tidal energy is _________________ type of energy.

1. Renewable
2. Non renewable
3. Water
4. None of the above

6. Coal, petroleum and natural gas are called ________________ fuels.

1. Fossil
2. Nuclear
3. Renewable
4. None of the above

7. _______________ is the most commonly used fuel for the production of electricity.

1. Water
2. Coal
3. Wind
4. None of the above

State true or false. If false, correct the statement:

1. Biogas is a fossil fuel.

2. Planting trees increases the groundwater level.

3. Habitat destruction cause loss of wild life.

4. Nuclear energy is a renewable energy.

5. Overgrazing prevents soil erosion.

6. Poaching of wild animals is a legal act.

7. National park is a protected park.

8. Wild life protection act was established in 1972.

Match the following:

1. Soil erosion – energy saving

2. Bio gas – acid rain

3. Natural gas – removal of vegetation

4. Green house gas – renewable energy

5. CFL bulbs – CO₂

6. Wind – non-renewable energy

7. Solid waste – lead and heavy metals

Choose the best answers:

1. Which of the following is/are a fossil fuel?

i. Tar ii. Coal iii. Petroleum

(a) i only

(b) i and ii

(c) ii and iii

(d) i, ii and iii

2. What are the steps will you adopt for better waste management?

(a) Reduce the amount of waste formed

(b) Reuse the waste

(c) Recycle the waste

(d) All of the above

3. The gas released from vehicles exhaust are

i. Carbon monoxide ii. Sulphur dioxide iii. Oxides of nitrogen

(a) i and ii

(b) i and iii

(c) ii and iii

(d) i, ii and iii

4. Soil erosion can be prevented by

(a) Deforestation

(b) Afforestation

(c) Over growing

(d) Removal of vegetation

5. A renewable source of energy is

(a) Petroleum

(b) Coal

(c) Nuclear fuel

(d) Trees

6. Soil erosion is more where there is

(a) No rainfall

(b) Low rainfall

(c) Rainfall is high

(d) None of these

7. An inexhaustible resource is

(a) Wind power

(b) Soil fertility

(c) Wild life

(d) All of the above

8. Common energy source in village is

(a) Electricity

(b) Coal

(c) Biogas

(d) Wood and animal dung

9. Green house effect refers to

(a) Cooling of earth

(b) Trapping of UV rays

(c) Cultivation of plants

(d) Warming of earth

10. A cheap, conventional, commercial and inexhaustible source of energy is

(a) Hydropower

(b) Solar energy

(c) Wind energy

(d) Thermal energy

11. Global warming will cause

(a) Raise in level of oceans

(b) Melting of glaciers

(c) Sinking of islands

(d) All of these

12. Which of the following statement is wrong with respect to wind energy

(a) Wind energy is a renewable energy

(b) The blades of wind mill are operated with the help of electric motor

(c) Production of wind energy is pollution free

(d) Usage of wind energy can reduce the consumption of fossil fuels

Consider the statements given below and choose the correct option:

In each of the following question a statement of assertion (A) is given and a corresponding statement of a reason (R). Of the four statements given below mark the correct answer:

(a) Both assertion and reason are true and reason is correct explanation of assertion

(b) Both assertion and reason are true but reason is not the correct explanation of assertion

(c) Assertion is true but reason is false

(d) Both assertion and reason are false

1. Assertion: Rainwater harvesting is to collect and store rain water.

Reason: Rainwater can be directed to recharge the underground water source.

2. Assertion: Energy efficient bulbs like CFL must be used to save electric energy.

Reason: CFL bulbs are costlier than ordinary bulbs, hence using ordinary bulbs can save our money.

Answer:

Fill in the blanks:

1. Reduction 2. Soil erosion 3. The cutting down of trees 4. Nilgiris 5. Renewable 6. Fossil 7. Coal

True or false:

1.False – Biogas is the mixture of methane, hydrogen sulphide, carbon-di-oxide and hydrogen.

2.True

3.True

4.False – Nuclear energy is a non-renewable energy source. The material used in nuclear plants is not renewable.

5.False – During overgrazing, most of the plants are eaten up. If the plants or vegetation is retained, the soil is not exposed. Soil erosion occurs due to overgrazing.

6.False – Poaching should be prohibited.

7.True

8.True

Match the following:

1.(c) Removal of vegetation

2.(d) Renewable energy

3.(f) Non-renewable energy

4.(e) CO₂

5.(a) energy saving

6.(b) acid rain

7.(g) Lead and heavy metals

Choose the best answer:

1.ii and iii 2. All the above 3. i, ii and iii 4. Afforestation 5. Trees 6. Rain fall is high 7.all of the above 8. Wood and animal dung

9. Warming of earth 10. Wind energy 11.all of these 12.the blades of wind mill are operated with the help of electric motor

Reason and Assertion:

1. Both assertion and reason are true and reason is correct explanation of assertion

2. Assertion is true but reason is false.