I. CHOOSE THE BEST ANSWER:
1. Which one of the following is not a factor of soil formation-inorganic matter
2. Biotic resources are those obtained from the –biosphere
3. Time determines thickness of soil profile
4. Medicinal herbs are commonly found on –palani hills
5. Which one of the following is a leading producer of lignite-Neyveli
6. Which one of the following is not a producer of iron ore-Thiruchirappali
II. MATCH THE FOLLOWING:
1. Mettur thermal power station –Perambalur
2. Wind energy -5500 MW2
3. Saline soil -Vedaranyam
4. Cinchona -Medicine
5. Solar power -Dharmapuri
III. ANSWER IN BRIEF :
1. Define resources?
- The term resources refers to the natural wealth available on the earth surface for the welfare of mankind.
- The resources have the three characteristics called utility, quantity, and consumption.
2. Define soil?
- Soil is the loose material.
- It forms the upper most layer of the earth.
- It consist mainly of very small particles.
3. Which are the factors that determines formation of soil?
The factors that determine the formation of soil are
- Parent rock.
- Time factor.
- Fauna and
4. Define rain water harvesting?
- Rain water harvesting is the process of collecting rain water from roof tops
- It directed to an appropriate location
- There it is stored for ground water recharge
5. What is national park?
An natural area designated to protect the ecological balance of one or more ecosystems for the present and future generation this refered to as national park
6. Name the Hydel power plants of Tamil Nadu
|S. No||Hydel Power Plant||Rivers||MW|
|1.||Kundah(I to V)||Bhavani||500|
|8.||Papanasam hydro electric power||Papnasam||32|
7. Difference between conventional sources and non conventional.
|Conventional sources||Non conventional source|
|Conventional sources of energy have been traditionally used by mankind for a long time||Non conventional power resources are known as renewable resources|
|It includes fossil fuels like coal and natural gas, oil and nuclear power||Sun is the biggest source of non conventional energy sources|
8. what are advantages and disadvantages of wind energy
Advantages of wind energy
It is a non polluting source
It involves low cost of production
Disadvantages of wind energy
It causes noise pollution
Wind mills are very costly to set up.
Disturbs radio and TV reception.
9. soil is nin renewable resources explain:
Soil is the non renewable resources which are formed over very long geological periods and are certain to be exhausted in the course of time.
Soil forming processes are controlled by the factors such as parent rock, climate,relief,time factor, flora fauna and microorganism present in a soil.
IV. ANSWER IN A PARAGRAPH :
1. Explain the different types of soil found in Tamil Nadu?
|1.||Alluvial soil||Thanjavur, Thiruvarur, Nagapattinam, Villupuram,Kuddalore|
|2.||Regur or the Black soil||Coimbatore, Madurai,Virudhunagar Thuthukudai, Thirunelveli|
|3.||Red loam||Sivagangai, Ramanadhapuram|
|4.||Laterite soil||Kancheepuram, Thiruvallur,Thanjavur hill tops of western and eastern ghats|
|5.||Saline soil||Predominately in Vedaranyam, Coromandle coast and for about 10 km in all the coastal districts of Tamil Nadu|
2. What are the uses of forest:
- Among the 3000 and more plant species are found in Tamil Nadu, majority of them are found in the mixed deciduous forest.
- The most note worthly flower of kodaikannal is kurinji flower.
- It blooms once in 12 years
- Chincona, the forest product gives the medicine quineine to treat malaria
- Palmyrah trees are grown abundantly in Thirunelveli district as subsidiary activity to agriculture.
- Its products are used as raw material for cottagev industries.
- Eucalyptus trees grown in Nilagiris are used as medicine for curring cold and as pain reliver.
- Exotic varieties of sandal wood are grown in javadhi hills.
- These forest contribute a lot to the economy of the stats.
3. Give an account to the mineral resources in the Tamil Nadu.
Minerals are classified in to three categories.
|Iron ore||Salem, Namakkal, And Thiruvannamalai|
|Copper||Salem,Nilgiris, Coimbatore, Madurai|
|Bauxite||Salem,Nilgiris, Coimbatore, Vellore Dharmapurai|
|Chromite||Salem, Namakkal, Thiruchirappalli and Erode|
Non Metallic Minerals Of Tamil Nadu
|Lime stone||Virudhunagar, Thuthukudi, Thirunelveli, Thiruchirappali, Salem|
|Mica T||Hiruchirappali, Coimbatore and Ramanadhapuram,|
|Magnesite||Salem, Namakkal, Erode and Coimbatore|
|Steatite||Vellore, Cuddalore, Coimbatore, Salem, Thiruchirapalli|
|Salt||Chennai, Thuthukudi, Cuddalore, Nagapattinam|
|Mineral fuels of Tamil Nadu|
|Petroleum and lignite||Thiruvarur(panamgdi) narimanam(kaveri delta region) neyveli|
4. Give an account of thermal power resources of Tamil Nadu
Thermal power resources:
Power generated from non renewable energy resources such as coal, oil and natural gas is known as thermal power. Thermal power is produced by heating the water. The steam thus formed spins the turban to produce electricity.
|Name of the plant||District||Types of fuel||MW|
|Neyveli lignite corporation||Cuddalore||coal||2490|
|North Chennai thermal power unit 1||Thiruvallur||coal||1200|
|Thuthukudi thermal power plant||Thuthukudi||coal||1000|
|Mettur thermal power station||Salem||coal||600|