Management of Natural Resources

Why is the process of ‘reuse’ better than that of ‘recycling’ ?Why is the process of ‘reuse’ better than that of ‘recycling’ ?

(a) Locate and name the water reservoirs in figures (a) and (b).
(b) Which has an advantage over the other and why?

The pH of a river water sample as measured by pH paper is found to be 6. What does it tell us about water ?

What measures would you take to conserve electricity in your house ?

(a) What is meant by rainwater harvesting ? Name some of the ancient structures used for rainwater harvesting by the rural people.
(b) What are the various advantages of water stored in ground ?

In a village in Karnataka, people started cultivating crops all around a lake which was always filled with water. They added fertilisers to their field in order to enhance the yield. Soon they discovered that the water body was completely covered with green floating plants and fishes started dying in large numbers.  Analyse the situation and give reasons for excessive growth of plants and death of fish in the lake.

State two changes you can make in your habits to reduce the consumption of electricity or water. [All IndiaiC)]

Give two examples each of the following:

1. Renewable sources of energy
2. Non-renewable sources of energy. [All India]

How would these advantages differ from the advantages of using a long-term perspective in managing our resources?

List any two traditional systems of water harvesting. [Foreign]

What is water harvesting? Mention any two water harvesting structures. [Delhi]

What are non-renewable resources of energy? Give two examples of such resources. [Delhi]

Name the rivers with which the following dams are associated :
Name the rivers with which the following dams are associated :
(a) Tehri Dam
(b) Sardar Sarovar Dam
(c) Bhakra Dam

Name two factors which can be used to find whether river water has been contaminated.

What is the name of the process in which rainwater falling on the earth is stopped from flowing and made to percolate into the ground ?

Name the most common practice of recharging ground water.

Write the full names of (a) CFL, and (b) CFC.

Name a clean gaseous fuel other than LPG and natural gas.

What is silviculture ? What are its advantages ?

Describe briefly the ‘khadin’ system of rainwater harvesting practised in Rajasthan.

Is water conservation necessary ? Give reasons.

State any five steps to reduce the consumption of coal and petroleum products.

(a) Name any five sources of water (other than rivers)
(b) Describe how, the water of river Ganga has been highly polluted.

Suggest a few measures for controlling carbon dioxide levels in the atmosphere.

What would be the advantages of exploiting resources with short-term aims?

Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?

Suggest any four changes that you would like to incorporate in the life style of students of your age to move towards a sustainable use of available resources. [All India Delhi 2008(C)]

An environmentalist on visit to your school suggested the use of three R’s to save the environment. Explain what he meant by three R’s and how you would follow his advice at home. [All India]

State any four personal choices you would like to make to reduce energy consumption without affecting the quality of life or work explaining how each one of them would help you to do so. [Foreign]

List any four characteristics of a good fuel. [Delhi]

List any four disadvantages of using fossil fuels for the production of energy. [All India]

List the products of combustion of fossil fuels. What are their adverse effects on the environment? [All India]

Name two fossil fuels.

Name the bacteria whose presence in water indicates the contamination with disease-causing micro-organisms.

With which process are the following ancient structures associated ?
Kulhs, Eris, Surangams, Kattas, Pynes

State whether the following statement is true or false :
Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.

Fill in the following blanks with suitable words :Fill in the following blanks with suitable words :
(a) LPG is a ……………fuel but biogas is not a…………. fuel.
(b) Glaciers are a source of…………………..
(c) One of the main aim of management of forests and wildlife is to conserve the……………….which we haveinherited.
(d) Khadin is a traditional………………………..harvesting system in Rajasthan.
(e) When a fuel burns in an insufficient supply of air, then some poisonous gas called ……………………….. is also produced.

Why should we conserve forests and wildlife ?

Although coal and petroleum are produced by the degradation of biomass, even then we need to conserve them. Why ?

Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment ?

Why should fossil fuels like coal and petroleum be used judiciously ?

What are the main uses of coal and petroleum products ?

Give one example to show how the participation of local people can lead to the efficient management of forests.

(a) What is a natural resource ? Name three important natural resources.
(b) Why do we need to manage our natural resources ?

What measures would you take to conserve electricity in your house?

What changes can you make in your habits to become more environment-friendly?

Why should we conserve forests and wildlife?

Suggest some approaches towards the conservation of forests.

State two reasons each of conserving (a) forest and (b) wildlife. [All India(Q)]

State an instance where human intervention saved the forests from destruction. [Delhi(Q)]