Geothermal energy is heat stored deep within the Earth, originating from molten rock and radioactive decay, and is a renewable energy source replenished by rainfall. The process of generating electricity from geothermal energy involves drilling wells to bring steam or hot water to the surface, which spins turbines connected to generators. The Philippines is the third largest producer of geothermal energy globally, with various power plants located throughout the country.

1. ENERGY

2. GEOTHERMAL

3. ENERGY FROM VOLCANO

4. GEOTHERMAL ENERGY
heat or thermal energy that is stored deep
within the earth(core) that originates from the
melted molten rock and the decay of radioactive
substances.
considered high renewable energy source
because the water is replaced by rainfall and
the heat is continuously produced by the earth.

5.  occurs in the ring of fire zone of pacific
volcanoes

6.  Philippines is the third largest producer of
geothermal energy in the world.

7.  Active volcano have high geothermal energy
system. Because the hot molten rock material
located under the earth’s surface may heat the
circulating groundwater.

8. HOW DOES ENERGY WORK?

9. Energy is generated by carrying heat
to the surface via fluid circulation
through various types of mechanics.

10. The main energy transformation
that occur in geothermal power
stations are thermal energy found
in geothermal reservoir converted
to mechanical energy from the
steam towards a turbine and then
to electrical energy by the
generator.

11. A geothermal power plant uses steam
through a geothermal reservoir. A
geothermal reservoir is an underground
pool of water of hot water found below
the earth’s surface. The geothermal
power plant undergoes a series of steps
to produce electricity for human
consumption.

13. STEPS TO PRODUCE
ELECTRICITY

14. 1. HEAT FROM THE EARTH’S CRUST
CREATES STEAM
2. STEAM ROTATES TURBINE

15. 3. GENERATOR PRODUCES
ELECTRICITY
4. WATER IS INJECTED BACK INTO THE
GROUND

20. How does geothermal energy works?
1.Wells are drilled deep into the earth to
pump steam or hot water to the surface
2.When the water reaches the surface, the
drop in pressure causes the hot water to
turn into steam.

21. 3.The steam produced spins the turbine. The
mechanical energy caused by the spinning
of the blades of the turbine is used to spin
magnets and generate an electric current in
the generator.
4.The cooling tower cools the steam which
condenses back to the water.

22. 5.The cooled water is pumped back into the
earth to begin the process again.

24. TYPES OF GEOTHERMAL POWERPLANT
1. DRY STEAM - IT REQUIRES THE HIGHEST
AMOUNT OF TEMPERATURE

25. 2. FLASH CYCLE - REQUIRES LESS
TEMPERATURE ABOUT 180 C AND UTILIZES
A FLASK TANK

26. 3. BINARY CYCLE - REQUIRES A LOWER
TEMPERATURE THAN FLASH CYCLE

27. Examples of geothermal power plants in the
country:
 Tiwi geothermal power plant in Tiwi, Albay
 Mak-ban(Makiling banahaw) Geothermal
Power plant in Calawang, Laguna
 Palinpin geothermal power plant in
Valencia, Negros Occidental

28.  Bac-man (bacon manito) geothermal
power plant in Bacon, Sorsogon
 Mt. Apo geothermal power plant in
Kidapawan City, North Cotabato

33. Illustrate how does
geothermal energy work.

34. Write true if the statement is correct and
false if it is not.
1.Geothermal energy is an energy that is
stored deep within the earth(core) that
originates from the melted magma and the
decay of radioactive substances.

35. 2.Inactive volcano have high geothermal
energy system.
3.Most geothermal energy on the world
occurs in the ring of fire zone of pacific
volcanoes.

36. 4.Makiling-banahaw is located at
Tiwi.
5.Mt. Apo geothermal power plant is
located at Leyte.

37. YES
No Write your
reason at least 1
or 2 sentences
1. Is the Philippines rich in
geothermal energy?
2. Is building a geothermal power
plant is much cheaper than solar
power plant.
3. Is geothermal energy safer than
most other energy sources?
4. Can the Philippines sustain its
geothermal energy source?
5. Can we use Geothermal energy in
our daily life?

38. ASSIGNMENT
WHAT IS CLIMATE
CHANGE?