This document discusses geothermal energy and how it can be used as a renewable energy source. It explains that geothermal energy harnesses heat from within the Earth and can be used to generate electricity through geothermal power plants. The document also describes how geothermal power plants work by drilling wells into the Earth to extract hot water that is used to power steam turbines and generators. Additionally, the advantages of geothermal energy being renewable and more environmentally friendly than fossil fuels are balanced with the disadvantages of high initial costs and potential to trigger earthquakes.

1. Geothermal
Energy
3Q-SCIENCE 9-WEEK 3
T. JHANEL

2. LESSON OBJECTIVES:
At end of the lesson, students should be able to;
1. Explain geothermal energy as an abundant source
of energy.
2. Compare geothermal energy to other forms of
energy.
3. Discuss how a geothermal energy power plant
works in terms of energy transformation.
4. Describe the advantages and disadvantages of
geothermal energy.

3. LESSON GUIDE
1
Warm-up
activity
2 3
Review
Lesson
proper
4
Activity

4. Review on
Volcanoes

6. COMPARE THE
FOLLOWING PICTURES.

7. WHAT TYPE OF VOLCANIC
ERUPTION IS THIS?

8. WHAT TYPE OF VOLCANIC
ERUPTION IS THIS?

9. WHAT TYPE OF
VOLCANIC ERUPTION IS
A STEAM-DRIVEN
EXPLOSION THAT
USUALLY LEADS TO
ANOTHER TYPE OF
ERUPTION?

10. GIVE 3 BENEFITS
OF VOLCANIC
ERUPTION.

11. https://phet.colorado.edu/sims/html/energy-forms-and-
changes/latest/energy-forms-and-changes_en.html
Exploring Energy Forms

13. - The energy derived from the
center of the Earth.
- 2 Greek words
“Geo” – Earth
“Thermal” - Heat
Geothermal
Energy

14. Heat flows outward from Earth's interior. The crust insulates us
from Earth's interior heat.

16. CIRCUM-PACIFIC BELT

17. Areas near volcanoes called geothermal
fields usually surrounded by hot springs,
geysers, or boiling mud pools.

18. - Provides an alternative
source of energy, which is
greener and more eco-
friendly than coal and
fossils.
Geothermal
Energy

19. How is Geothermal
Energy generated?

20. CREDITS: This presentation template was created by Slidesgo, including icons by Flaticon, and infographics &
images by Freepik
Geothermal Energy is generated in 2 ways:
1.Geothermal Powerplants
2.Geothermal Heat Pumps

21. Geothermal Power plants
- It is where heat from within the
Earth changes water into steam,
which turns steam turbines that
generates electricity.

22. Geothermal power plant
Hot water Stream Turbine
1 2 3
Injection Cooling
5 4

24. 1
2
3
4
5

25. 1
2
3
4
5
Wells are drilled deep
into the Earth to pump
hot water to the
surface.

26. 1
2
3
4
5
When the water reaches
the surface the drop in
pressure causes the
water to turn into steam

27. 1
2
3
4
5
the steam causes the
turbine to spin which is
connected to a generator
that produces
electricity.

28. 1
2
3
4
5
The cooling tower
cools the stream
which condenses it
back to water.

29. 1
2
3
4
5
The cooled water is
pumped back into the
earth to begin the
process again.

32. Tiwi Geothermal Power Plant (1979), Albay Philippines

33. Mak-Ban Geothermal Power Plant 1979, Laguna Philippines
Makiling-Banahaw,
also known as Bulalo

34. Tongonan Geothermal Power Plant 1983, Leyte

35. Bacon-Manito (Sorsogon/Albay)

36. Other Geothermal Power
Plants in the Philippines
• Palinpinon, Leyte
• Mindanao, North Cotabato
• Valencio, Negros Oriental
• Bago City, Negros Occidental

38. Geothermal Heat Pumps
Removes the heat from the fluid in
the Earth connection, concentrates
it, and then transfer it to the
building.
Other way to generate Geothermal Energy

40. Advantages and
Disadvantages of
Geothermal Energy

41. Pros of Geothermal Energy
Renewable
Rapid
Evolution
Sustainable
Efficient
No fuel
required
More
Environment-
friendly

42. Cons of Geothermal Energy
May trigger
Earthquakes
Environmental
concerns about
greenhouse
emissions
High investment cost for
geothermal systems
Located-
stricted

43. ACTIVITY TIME!
Make a flowchart showing the process
of geothermal energy generation.

44. HOMEWORK
● Answer Page 226, Checkpoint
and Reflect Upon; and Page 228-
229, Let’s Organize and
Reflective Questions.

45. CREDITS: This presentation template was created by Slidesgo, including icons by Flaticon, and infographics &
images by Freepik
teacherjhanel@integratedmontessori.edu.ph
Do you have any questions?
Please keep this slide for attribution
Thank You!

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