The document discusses the nature of volcanic eruptions, including the factors that affect eruption styles such as temperature, chemical composition, and gas content. It outlines educational activities, quizzes, and group discussions to explore the processes involved in volcanic eruptions, including the sequence of events during an eruption. Additionally, it provides criteria for evaluating group presentations on volcanic eruptions.

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Good morning!!

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Good morning!!

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Give me a
Label
Reviewing past lesson!

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Venus has a beautiful name
and is the second planet from
the Sun
Label Me!
1.
2.
3.
4.

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Jumbled
Letters
Arrange the letters to
identify the given words
provided by its definition.

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01
Used to determine the hotness or
coldness of a particular place, object
etc.
TEMPERATURE
P E T E M T U R E R A

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02
a substance that is in a gaseous, or
vaporous, state of matter
GASES
S E S A G

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03
a measure of a fluid's resistance to
flow.
VISCOSITY
Y T I S O C S I V

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04
A violent and destructive shattering or
blowing apart of something
EXPLOSION
P L O E X S I O N

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OBJECTIVES:
explain the nature of volcanic
eruption
describe how volcano erupts
perform a short scenario of what
will happen if there is a volcanic
eruption
01
02
03

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Guide Questions
1.Where did the volcanoes compared of?
2.Do they have the same process? How do you
say so?
3.When does magma become lava?
4.What do you think are the reasons why
volcano erupts?

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Guide Questions
1.Where did the volcanoes compared of?
2.Do they have the same process? How do you
say so?
3.When does magma become lava?
4.What do you think are the reasons why
volcano erupts?

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Group Activity
Discuss the three primary factors
affecting the volcanoes eruptive
style.
Group 1 Temperature
Group 2 Chemical Composition
Group 3 Amount of gases

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What is the behavior of magma when
it was affected by :
1. temperature
2. chemical composition
3. amount of gases

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Criteria
Criteria 5
(Very Good)
4
(Good)
3
(Fair)
2
(Needs Improvement)
Accuracy of the content
of the output
All the details in the given
output were correct
Commit 1-2 mistakes in
the accuracy of the
output
Commit 3-4 mistakes in
the accuracy of the
output
Commit 4 mistakes in the
accuracy of the output
Presentation/
Explanation
Explanations detailed
and clear
Explanation are clear but
missed to state 1-2
concept
Explanations difficult to
understand
Explanations were
difficult to understand
and missed all the
important details
Teamwork All members are actively
participating in the group
activity
1-2 members are actively
participating in the group
activity
3-4 members are actively
participating in the group
activity
Only one member of the
group do the entire task
Efficiency Finished on or before the
allotted time
Finished 1-2 minutes late
to the given time
Finished 3-4 minutes late
to the given time
Finished 5 minutes late
to the given time.

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How do volcanoes
erupt?

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How do volcanoes
erupt?

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How do volcanoes
erupt?

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How do volcanoes
erupt?

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How do volcanoes
erupt?

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How do volcanoes
erupt?

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Factors Affecting Volcanic
Eruptions

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Factors Affecting Volcanic Eruptio
VISCOSITY
The property of the materials resistance
to flow. It is describe as the liquid’s
thickness and stickiness.
The more viscous and thicker the
material is, the greater is its
resistance to flow

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Factors Affecting Volcanic Eruptio
VISCOSITY
The property of the materials resistance
to flow. It is describe as the liquid’s
thickness and stickiness.
The more viscous and thicker the
material is, the greater is its
resistance to flow

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Temperatu
re

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Temperatu
re
The viscosity of magma decreases with temperature.
The higher the temperature of magma is, the lower its
viscosity . As lava flows, it cools and begins to harden, its
ability to flow decreases and eventually stops.

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Compositio
n of
Magma

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Composition of
Magma
Magma with high silica
content are more viscous
than those with low silica
content
The magma that contains less
silica is relatively fluid and travels
far before solidifying.

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Amount of Gases

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Amount of Gases
Other factors being equal, gas (mainly water
vapor) dissolved in magma tends to increase its
ability to flow
Therefore, in near-surface environments, the loss
of gases makes magma more viscous, forming a
dome or a columnar.

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Amount of Gases
Other factors being equal, gas (mainly water
vapor) dissolved in magma tends to increase its
ability to flow
Therefore, in near-surface environments, the loss
of gases makes magma more viscous, forming a
dome or a columnar.

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Act Me!
1.You will be group into three groups. (The same group
you have yesterday)
2.Every group will perform a scenario of what will happen
if there is a volcanic eruption happening in your
community.
3.All the members of the group should possess different
roles.
4.You can use the combination of English and Tagalog
language in your presentation.
5.Be creative and resourceful in your presentation.
Instructions:

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Criteria 5
(Very Good)
4
(Good)
3
(Fair)
2
(Needs Improvement)
Accuracy of the content of
the output
All the details in the given
output were correct
Commit 1-2 mistakes in
the accuracy of the output
Commit 3-4 mistakes in
the accuracy of the output
Commit 4 mistakes in the
accuracy of the output
Presentation/ Explanation Explanations detailed and
clear
Explanation are clear but
missed to state 1-2
concept
Explanations difficult to
understand
Explanations were difficult
to understand and missed
all the important details
Teamwork All members are actively
participating in the group
activity
1-2 members are actively
participating in the group
activity
3-4 members are actively
participating in the group
activity
Only one member of the
group do the entire task
Efficiency Finished on or before the
allotted time
Finished 1-2 minutes late
to the given time
Finished 3-4 minutes late
to the given time
Finished 5 minutes late to
the given time.

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Short Quiz: Finding the Sequence!
Analyze the process of volcanic eruption. Arrange the process of volcanic eruption
into correct order using numbers 1-5. Write your answer and copy the statement
on a separate sheet of paper.

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Short Quiz: Finding the Sequence!
A.
• Magma moves upward and accumulates in an area called magma
chamber
B.
• Gas-charged magma reaches the surface and explode. The presence of
dissolved gases enables the molten materials to explode
C.
• More highly gas charged magma reaches the surface and volcano
explodes
D.
• Volcanic activities include the melting of solid rocks in the mantle which
became thick molten materials called magma
E.
• High temperature and pressure push magma through the openings like
vents and fractures. The magma then oozed out to form a lava dome but
do not cause any explosive eruption.

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Assignment
What are the types of volcanic
eruption?