I. CHOOSETHE BEST ANSWER:
1. Which one of the following is not afactor of soil formation-inorganic matter
2. Biotic resources are those obtainedfrom the –biosphere
3. Time determines thickness of soilprofile
4. Medicinal herbs are commonly foundon –palani hills
5. Which one of the following is aleading producer of lignite-Neyveli
6. Which one of the following is not aproducer of iron ore-Thiruchirappali
II. MATCHTHE 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. Defineresources?
- The term resources refers to the natural wealth available on the earth surface for the welfare of mankind.
- The resources have the three characteristicscalled utility, quantity, and consumption.
2. Definesoil?
- Soil is the loosematerial.
- It forms the uppermost layer of the earth.
- It consist mainly ofvery small particles.
3. Whichare the factors that determines formation of soil?
The factorsthat determine the formation of soil are
- Parent rock.
- Climate.
- Relief.
- Time factor.
- Flora.
- Fauna and
- Micro-organism.
4. Definerain water harvesting?
- Rain waterharvesting is the process of collecting rain water from roof tops
- It directed to anappropriate location
- There it is storedfor ground water recharge
5. What isnational park?
An naturalarea designated to protect the ecological balance of one or more ecosystems forthe present and future generation this refered to as national park
6. Namethe Hydel power plants of Tamil Nadu
| S. No | Hydel Power Plant | Rivers | MW |
| 1. | Kundah(I to V) | Bhavani | 500 |
| 2. | Mettur tunnel | Kaveri | 840 |
| 3. | Aliyar | Aliyar | 60 |
| 4. | Kodayar(1,2) | Kodayar | 100 |
| 5. | Solaiyar(1,2) | Sholayar | 95 |
| 6. | Kadamparai | Kadampari | 400 |
| 7. | Lower mettur | Kaveri | 120 |
| 8. | Papanasam hydro electric power | Papnasam | 32 |
| 9. | Pykara | Pykara | 150 |
| Total | 2297 |
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. whatare advantages and disadvantages of wind energy
Advantagesof wind energy
It is a non polluting source
It involves low cost of production
Disadvantagesof wind energy
It causes noise pollution
Wind mills are very costly to set up.
Disturbs radio and TV reception.
9. soil isnin renewable resources explain:
Soil is the non renewable resourceswhich are formed over very long geological periods and are certain to beexhausted in the course of time.
Soil forming processes are controlledby the factors such as parent rock, climate,relief,time factor, flora fauna andmicroorganism present in a soil.
IV. ANSWERIN A PARAGRAPH :
1. Explainthe different types of soil found in Tamil Nadu?
| S. No | Soil | Districts |
| 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. Whatare the uses of forest:
- Among the3000 and more plant species are found in Tamil Nadu, majority of them are foundin the mixed deciduous forest.
- The mostnote worthly flower of kodaikannal is kurinji flower.
- It bloomsonce in 12 years
- Chincona,the forest product gives the medicine quineine to treat malaria
- Palmyrahtrees are grown abundantly in Thirunelveli district as subsidiary activity toagriculture.
- Itsproducts are used as raw material for cottagev industries.
- Eucalyptustrees grown in Nilagiris are used as medicine for curring cold and as painreliver.
- Exoticvarieties of sandal wood are grown in javadhi hills.
- Theseforest contribute a lot to the economy of the stats.
3. Give anaccount to the mineral resources in the Tamil Nadu.
Mineralsare classified in to three categories.
| Minerals | District |
| Iron ore | Salem, Namakkal, And Thiruvannamalai |
| Copper | Salem,Nilgiris, Coimbatore, Madurai |
| Bauxite | Salem,Nilgiris, Coimbatore, Vellore Dharmapurai |
| Chromite | Salem, Namakkal, Thiruchirappalli and Erode |
| Pyrite | Villupuram |
NonMetallic Minerals Of Tamil Nadu
| Minerals | Districts |
| 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 | |
| Minerals | Districts |
| Petroleum and lignite | Thiruvarur(panamgdi) narimanam(kaveri delta region) neyveli |
4. Give anaccount of thermal power resources of Tamil Nadu
Thermalpower resources:
Power generated from non renewableenergy 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 theturban 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 |