2. OBJECTIVES:
At the end of the lesson, the students shall be able
to:
1. Define energy.
2. Differentiate renewable and nonrenewable
energy.
3. Cite the importance of energy coming from
volcanoes
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3. PRE-ACTIVITY
a. Are volcanoes dangerous?
b. Do they pose harm to
humans? Animals?
c. Do you think volcanoes are
important too? Why?
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5. Identify what energy source is shown in
the pictures.
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WIND
5
HYDROELECTR
IC
6. Identify what energy source is shown in
the pictures.
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SOLAR
COAL
GEOTHERM
AL
7. 1. Classify whether these energy
resources are renewable and
nonrenewable.
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RENEWABL
E
NONRENEWAB
LE
SOLAR COAL
WIND
HYDROELECTR
IC
GEOTHERMAL
BIOMAS
S
8. RENEWABLE
ENERGY
naturally replenish
themselves over time.
energy derived from
natural sources that are
replenished at a higher
rate than they are
consumed
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2. What makes these resources
renewable? non-renewable?
NON-RENEWABLE
ENERGY
comes from sources that will
run out or will not be
replenished in our lifetimes.
includes fossil fuels such as
coal and petroleum.
9. GEOTHERMAL ENERGY
Geo means Earth, Thermal means heat
The Earth is believed to be extremely hot from within.
This heat from the Earth’s interior is a source of energy
called geothermal energy. The heat of the Earth warms
up water which is trapped in rock formations beneath its
surface.
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3. Is geothermal a non-renewable source of
energy?
4. Where does geothermal energy come from?
11. Energy from the volcano
Actually, the Philippines ranks second in the world’s
production of geothermal energy. According to the
Department of Energy, 14.4% of the country’s total
power generation is produced from geothermal
energy. The production of electricity from geothermal
energy is cheaper than the electricity production
using natural gas, coal, and hydropower.
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13. 2/18/2024 13
Power plants are built in an area where it is particularly hot just below the surface such
as near a group of geysers, hot springs, or volcanic activity.
14. Quiz:
1. Which of these energy resources is non-renewable?
A. wind B. nuclear C. biomass D. hydroelectric
2. What is the source of geothermal energy?
A. Sun B. heat in the earth’s interior C. wind D. water
3. Which of the following involves steam to turn on turbines?
A. hydroelectric B. tidal C. geothermal D. solar
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15. B. Anagram: Rearrange the letters to form a word.
4.bmsiosa 8.hogaetrlem
5.ochriceteldry 9. eulf
6. nidw 10.loac
7.rsola
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Quiz:
16. C. Rearrange the following steps in generating electricity
___. Wells are drilled deep into the Earth to pump steam or hot water to
the surface.
_____. The cooled water is pumped back into the Earth to begin the
process again.
_____. The steams spins a turbine, which is connected to a generator
that produces electricity
_____. Cooling tower cools the steam which it condenses back to
water.
_____. When the water reaches the surface, the drop in pressure
causes the water to turn into steam.
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Quiz:
Earth would have been desolate without them. Without volcanoes, there wouldn't be life on Earth.
Energy is either transformed or transferred every time work is being done. This means that since it changes forms every time it's used, the amount of energy in the universe will forever remain the same.
Wells are drilled deep into the Earth to pump steam or hot water to the surface.
When the water reaches the surface, the drop in pressure causes the water to turn into steam.
The steams spins a turbine, which is connected to a generator that produces electricity
Cooling tower cools the steam which it condenses back to water.
The cooled water is pumped back into the Earth to begin the process again.
