
Renewable Energy Resources
Presentation
•
Science
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11th - 12th Grade
•
Practice Problem
•
Medium
Standards-aligned
Lester Cabaluna
Used 112+ times
FREE Resource
10 Slides • 2 Questions
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Geothermal Energy Resource
Earth Science - STEM
Quezon City Science High School
Mr. Mark Lester M. Cabaluna
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Lesson Outline
Geothermal Energy
● Types of Geothermal Energy
● Tapping of Geothermal Energy
● Availability of Geothermal Energy
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Learning Competencies
At the end of the lesson, you are able to:
● Describe how Earth’s internal heat can be transferred by geothermal water
● Explain how heat from the inside of the Earth (geothermal) is tapped as a source of
energy for human use.
● Demonstrate how geothermal energy can be renewal and non-renewable resource
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Open Ended
What is Geothermal Energy?
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What is Geothermal Energy?
● It is an internal energy beneath the Earth's surface that is accessed or tapped to convert it into electricity to be used by the consumers.
● It is usually tapped in near areas of volcanic origin.
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Geothermal Energy
Types of Geothermal Energy
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There are three (3) types of Geothermal Energy
Low-Temperature – ranges from 20°C to 90°C geothermal water; used only for heating.
Medium-temperature – ranges from 90°C to 160°C geothermal water; geothermal water in liquid form is used to heat another fluid, which vaporizes to drive the turbine of the generator.
High-temperature – geothermal water above 160°C; water is vaporized and used directly to drive the turbine of the plant’s generator.
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Geothermal Energy
Tapping of Geothermal Energy
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Here's what you need to take note of:
Only Medium- to High-Temperature types are possible for tapping.
Geothermal waters (heated water on groundwater or injected water) were used to generate steam.
Very hot steam is used to drive the turbine; this generates mechanical energy to electrical energy.
Used geothermal water is injected back for cycling geothermal energy.
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Multiple Choice
Is Geothermal Energy Renewable or Nonrenewable Resource?
Renewable Resource
Nonrenewable Resource
Either Renewable or Nonrenewable
Neither Renewable nor Nonrenewable
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Geothermal Energy
Availability of Geothermal Energy
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Geothermal as Renewable and Nonrenewable Source
Geothermal energy is basically considered as a renewable resource. However, some geothermal resources deplete fast in some cases. Here are examples of depleting geothermal resources:
1. Source of heat within is due to radioactive materials or residual heat.
2. Recycling geothermal water back to the source is slower than getting it.
Geothermal Energy Resource
Earth Science - STEM
Quezon City Science High School
Mr. Mark Lester M. Cabaluna
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