it is a video with ppt of class 8 icse

1. Solar & Hydroelectric Energy

2. Solar Energy
• The energy we get from sun is called as Solar
energy.
• It is type of inexhaustible energy ( Renewable
Energy) i.e it doesn‘t get ever finished.
• It is pollution free energy.
• It is used as heating , generating electricity ,
and for cooking food.

3. Devices used for utilizing Solar Energy
• Solar cooker
• Solar water heater
• Solar furnaces
• Solar Dryer

4. Uses of Solar energy
• For drying purpose.
• For preservation of various eatables.
• To get rid of moisture content from the crops
for harvesting.
• To obtain salt from sea water.
• For producing electricity using solar cells.

5. Worlds largest Solar Plant
• The 392 MW Ivanpah Solar Power Facility,
located in California's Mojave Desert, is the
world's largest solar power plant project
currently in operation.

7. Hydroelectric Energy
1. It is also called as Hydel power Energy.
2.Hydroelectricity is the term referring to
electricity generated by hydropower; the
production of electrical power through the use of
the gravitational force of falling or flowing water.
3.It is also types of inexhaustible energy.
4. Is is generated by utilising kinetic energy of
flowing water.

8. How it produces electricity in
hydroelectric dams.
• Hydel energy is produced by utilizing kinetic energy
of flowing water. When the water stored in the
reservoirs, behind the dam ,is allowed to flow down
from a height , the force drives the blade of turbine
connected to a generator thus produce electricity

9. Major dams which produce energy in
India.
• Bhakra Dam in Punjab
• Hirakund Dam in Orrisa
• Matatila Dam in Uttar Pradesh
• Tehri Dam in Uttrakhand
• Salal Dam in jammu & kashmir
• Sardar Sarovar Dam in Gujrat
• Srisailam Dam in Andra Pradesh
• Tungabhadra Dam in Karnatak

10. Advantages of Hydro power plant
• Clean and cheap
• Do not produce pollutants
• No waste by-products are produced
• They do not require transportation of fuels
• Hydro power is a renewable source of energy

11. Disadvantage of hydro power plant
• Large dams release methane, which is a greenhouse gas that
contributes to global warming
• Limited geographic potential
• Causes a change in the course of rivers
• Sediment accumulates in a dam and eventually reduces its
water storage potential
• Lot of land is submerged under water
• Fish and wildlife are affected drastically