how volcano erupts.pptx grade 9 students

paulpatulot23 10 views 39 slides Sep 05, 2024
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About This Presentation

ppt


Slide Content

Good morning!! Prayer

Good morning!! Checking of Attendance

Give me a Label Reviewing past lesson!

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

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

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

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

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

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

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

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

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

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

1. What is viscosity? 2.W hat is the behavior of magma when it was affected by : a.temperature b.chemical composition c.amount of gases

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.

How do volcanoes erupt?

How do volcanoes erupt?

How do volcanoes erupt?

How do volcanoes erupt?

How do volcanoes erupt?

How do volcanoes erupt?

Factors Affecting Volcanic Eruptions

Factors Affecting Volcanic Eruptions 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

Factors Affecting Volcanic Eruptions 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

Temperature

Temperature 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.

Composition of Magma

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.

Amount of Gases

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.

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.

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

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.

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.

Short Quiz: Finding the Sequence!

Assignment What are the types of volcanic eruption?
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