Class 10 Sources of Energy PPT Will help you in your Homework It is based on Physics Chapter

1. SOURCES OF
ENERGY
~Anshul
Singal

2. TYPES :
Non-Renewable Energy
Sources
 The Sources which once used are LOST
FOREVER and cannot be REPLENISHED or
take a lot of time, generally Millions of
Years to get Replenished.
 Causes POLLUTION i.e., Not Environment
Friendly.
 CONVENTIONAL Sources of Energy.
 EXHAUSTIBLE Sources.
 Eg.- Firewood, Diesel, Charcoal.
Renewable Energy
Sources
 These are those Energy Sources that are
constantly being Replenished.
 Do NOT cause POLLUTION i.e., More
Environmental Friendly.
 NON-CONVENTIONAL Sources of Energy.
 INEXHAUSTIBLE Sources.
 Eg.- Wind Energy, Solar Energy, . . . .etc.

3. CHARACTERISTICS OF A
GOOD SOURCE OF ENERGY
Should be easily Available.
Should do a Large Amount of
Work {or produce large amount of
Heat} per unit volume/mass.
Should be easy to Store and
Transport.
Should be Economical.
Should Not cause Environmental
Pollution.
CHARACTERISTICS OF A
GOOD FUEL
 Should be readily Available.
 Should be Economical / Less
Expensive.
 Should release more Heat on
Burning.
 Should have High Calorific Value and
Low Ignition Point.
 Should Not cause Environmental
Pollution.

4. FUELS
Fuel
 Wood
 Coal
 Alcohol
Calorific Value
17 kJ/g
25 kJ/g
30 kJ/g
The materials which are burnt to produce Heat Energy are known as
Fuels.
Eg.- Wood, Coal, LPG, Kerosene, Diesel, and Petrol.
The Amount of Heat produced by burning a unit mass of the fuel completely if known as Calorific Value.
The Amount of Heat produced by burning 1gm of a fuel completely is called its Calorific Value.
The common unit of measuring Calorific Value is kilojoules per gram (kJ/g).
Some Examples :
Fuel
 Petrol
 Biogas
 Hydrogen Gas
Calorific Value
50 kJ/g
37 kJ/g

6. “
”
FOSSIL FUELS (CONVENTIONAL SOURCE OF
ENERGY) A Natural Fuel formed deep under the Earth from the pre-historic remains of Living
Organisms(like Plants and Animals) is called a Fossil Fuel.
 Fossil Fuels are one of the major sources of energy for generating Electricity in Power Plants.
 Three Types of Fossil Fuels are : Coal, Petroleum and Natural Gas.
FORMATION OF FOSSIL FUELS
The plants and animals which died millions of years ago, were gradually buried deep in the earth
and got covered with sediment like mud and sand, away from the reach of oxygen of air. In the
absence of oxygen, the chemical effects of pressure, heat and bacteria , converted the buried
remains of plants and animals into fossil fuels like coal, petroleum and natural gas. It should be
noted that the buried remains of large plants were converted into coal whereas those of small
plants and animals work converted into petroleum and natural gas.
SUN : The Ultimate Source of Fossil Fuels
It was Sunlight of long ago that made Plants grow, which were then converted into
Fossil Fuels.
Fossil Fuels are energy-rich compounds of Carbon which were originally made by the
Plants with the help of Sun’s Energy (Solar Energy).
Today, when we burn Coal, Petroleum or Natural Gas, we are actually making use of
the Sunlight Energy that was stored by the plants millions of years ago.

7. “
”
POLLUTION CAUSED BY FOSSIL FUELS
The burning of Fossil Fuels produces Acidic Gases such as Sulphur dioxide and Nitrogen
Oxides, which further causes Acid Rains which is harmful for Living Organisms and affects
the Soil and Water, causes damage to Buildings and Corrosion of Metals, etc.
The burning of Fossil Fuels produces large amount of Carbon dioxide which goes into air.
The burning of Fossil Fuels (especially Coal) produces Smoke which pollutes the air.
The burning of Coal leaves behind a lot of Ash. It also puts tiny particles of Ash(called Fly-
Ash) into the air causing Air Pollution.
CONTROLLING POLLUTION CAUSED BY FOSSIL FUELS
The Pollution of Air caused by burning Petroleum Fuels(like- Petrol and Diesel) in Vehicles
can be controlled by fitting the Vehicles with Catalytic Converters.
The Pollution of air caused by burning Coal in Thermal Power Plants and Factories can be
controlled by washing down the Smoke and Acidic Gases by Water in a Scrubber.
The pollution of air caused by burning coal in thermal power plants and factories can also
be controlled by installing electrostatic precipitation in their chimneys.

8. SOLAR ENERGY
SOLAR ENERGY

9. WHAT IS SOLARWHAT IS SOLAR
ENERGY ?ENERGY ?
 Originates with the Thermonuclear FusionOriginates with the Thermonuclear Fusion
Reactions occurring in the Sun.Reactions occurring in the Sun.
 Represents the entire ElectromagneticRepresents the entire Electromagnetic
Radiations(Visible light, Infrared, Ultraviolet,Radiations(Visible light, Infrared, Ultraviolet,
X-Rays, and Radio Waves).X-Rays, and Radio Waves).
 Radiant Energy from the Sun has poweredRadiant Energy from the Sun has powered
Life on Earth for many Millions of Years.Life on Earth for many Millions of Years.

10. ADVANTAGES AND DRAWBACKSADVANTAGES AND DRAWBACKS
 ADVANTAGES –ADVANTAGES –
 Saves us Money. After the initial Investment has been Recovered, the EnergySaves us Money. After the initial Investment has been Recovered, the Energy
from the Sun is practically FREE.from the Sun is practically FREE.
 Environment Friendly. It is Clean, Renewable, Sustainable and Pollution Free.Environment Friendly. It is Clean, Renewable, Sustainable and Pollution Free.
 Does NOT contribute to GLOBAL WARMING, ACID RAIN or SMOG.Does NOT contribute to GLOBAL WARMING, ACID RAIN or SMOG.
 Actively contributes to the decrease of Harmful Green House Gas Emissions.Actively contributes to the decrease of Harmful Green House Gas Emissions.
 DRAWBACKS –DRAWBACKS –
 The initial cost is the main drawback of installing a Solar Energy System, largelyThe initial cost is the main drawback of installing a Solar Energy System, largely
because of the High Cost of the Semi-Conducting Materials .because of the High Cost of the Semi-Conducting Materials .
 Solar Panels require quite a large area for installation to achieve a good level ofSolar Panels require quite a large area for installation to achieve a good level of
Efficiency.Efficiency.
 The production of Solar Energy is influenced by the presence of Clouds and pollutionThe production of Solar Energy is influenced by the presence of Clouds and pollution
in Air, and it also relies on the precise location of the Sun.in Air, and it also relies on the precise location of the Sun.
 As far as Solar powered Cars go – their Slower Speed might NOT appeal to Everyone.As far as Solar powered Cars go – their Slower Speed might NOT appeal to Everyone.

11. PRODUCTION OF SOLAR ENERGY –PRODUCTION OF SOLAR ENERGY –
HH HH
HH HH
HeHe + Energy (Heat &Light)
~ Nuclear Fusion Reaction
TOP 5 LARGEST SOLAR POWER PLANTS IN INDIA –TOP 5 LARGEST SOLAR POWER PLANTS IN INDIA –
 Kurnool Ultra Mega Solar Park, Andhra PradeshKurnool Ultra Mega Solar Park, Andhra Pradesh
 Kamuthi Solar Power Plant, Tamil NaduKamuthi Solar Power Plant, Tamil Nadu
 Bhadla Solar Park, RajasthanBhadla Solar Park, Rajasthan
 Charanka Solar Park, GujaratCharanka Solar Park, Gujarat
 Sakri Solar Plant, MaharashtraSakri Solar Plant, Maharashtra

13. LATEST ONGOING SOLAR
ENERGY DEVELOPMENT
PROJECTS

14. SOLAR CHARKHA MISSOLAR CHARKHA MISSIONSION

15. UTTARAKHANDUTTARAKHAND : ACTIVELY: ACTIVELY
TAKING UP RENEWABLETAKING UP RENEWABLE
SOURCES OF ENERGYSOURCES OF ENERGY

16. PRACTICAL APPLICATIONS OF SOLARPRACTICAL APPLICATIONS OF SOLAR
ENERGYENERGY
NASA designed SolarNASA designed Solar
Powered Vehicle – “HELIOS”Powered Vehicle – “HELIOS”
Solar Powered Car –Solar Powered Car –
“Quant”“Quant”
………………etc.etc.