Question

1. Briefly describe the ways in which we use soil. 2. What is hydroelectricity? 3. Name some non-conventional sources of energy 4. Why solar car and fuel cell are preferred over conventional as 5. Where can you find geothermal energy? B. Fill in the blanks 1. The topsoil rich in humus containing is used to crop 2. We also use soil to prepare and works. We require at least of water per day 4. An average human being needs kilograms of air daily 5 is a constituent of the haemoglobin of our blood 6. Fuel Cell cars use to run C. Mark the following true or false. as ins: 1. Human body contains more than 80% water 2. Hydroelectricity is generated by force of wind, 3. Fossil fuels will last as long as the earth exists. 4. India has an ample storage of petroleum 5. Geothermal energy is a conventional source of energy 6. Solar cars emit ample amount of pollutants. not be Projects/Activities: 1. Visit your locality and record different sources of energy used by the topleth maten alternative source of energy used there. Record your observations in the sono 2. List different minerals used by your family. arbine 11. kn 47​

Answer 1

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Explanation:

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Answer 2

Explanation:

Answer 1 ji

The soil is a mixture that contains m jiinerals, organic matter, and living organisms. Bu oft broadly speaking, soil can refer to any loose sediment. Soil is an important element essential for the survival of living organisms.The soil is composed of different components: 5% organic matter, 45% minerals, 20-30% different gases and 20-30% water. Therefore, the soil is known as a heterogeneous body.

Uses of soil

1. Soil is made up of many minerals (the inorganic particles in soils that weather from rocks).
2. The plants that are grown in soil can be used for food, clothing, recreation, aesthetics, building materials, medicines etc.
3. Soil has vital nutrients for plants.
4. Soil is an important part of the building process.
5. Clay soil is used in making ceramics, or pottery.

Answer 2

hydroelectric power, also called hydropower, electricity produced from generators driven by turbines that convert the potential energy of falling or fast-flowing water into mechanical energy. ... The turbines in turn drive generators, which convert the turbines' mechanical energy into electricity.

Answer 3

Energy generated by using wind, solar, small hydro, tides, geothermal heat and biomass is known a non-conventional energy. All these sources are renewable process of energy generation and do not cause environmental pollution.

Answer 4

Solar cars. Solar cars depend on PV cells to convert sunlight into electricity to drive electric motors. Unlike solar thermal energy which converts solar energy to heat, PV cells directly convert the sun into electricity. ... Solar cars lack the safety and convenience features of conventional vehicles.

B. Fill in the blanks.

sorry i don't know the answer

C. Mark the following true or false.

as ins: 1. Human body contains more than 80% water. false

2. Hydroelectricity is generated by force of wind,

false

3.Fossil fuels will last as long as the earth exists.

true

4. India has an ample storage of petroleum . false

5. Geothermal energy is a conventional source of energy. true

6. Solar cars emit ample amount of pollutants.

true