DepEd RXII Science Today

Bakit may LIQUEFACTION?

Ang Liquefaction o pagkalusaw ng lupa ay isang pangyayaring nagaganap kapag ang maluwag at basang lupa (karaniwang buhangin na maraming tubig sa ilalim) ay nawawalan ng lakas dahil sa malakas na pagyanig ng lindol at kumikilos na parang likido.

Paano ito nangyayari?

1. May malakas na lindol.
2. Umaalog nang matindi ang lupa.
3. Tumataas ang pressure ng tubig sa pagitan ng mga butil ng lupa.
4. Nawawalan ng tibay ang lupa at nagiging parang putik o likido.
5. Lumulubog, tumatagilid, o gumuguho ang mga istruktura sa ibabaw nito.

Mga Palatandaan ng Liquefaction

✅ Paglabas ng buhangin at tubig mula sa lupa (sand boils)
✅ Pagkakaroon ng bitak sa lupa
✅ Paglubog o pagkatagilid ng bahay at gusali
✅ Pagkasira ng mga kalsada at tulay
✅ Pagkiling ng mga poste at puno

Saan Madalas Mangyari?

* Mga baybaying lugar
* Reclaimed areas
* Pampang ng ilog
* Mga lugar na may maluwag at basang buhangin

Mahalaga Ito Dahil?

Kahit hindi masira ng mismong pagyanig ang isang gusali, maaari pa rin itong lumubog o tumagilid kapag nagkaroon ng liquefaction.

Tandaan: Ang liquefaction ay iba sa landslide. Ang liquefaction ay pagkalusaw ng lupa dahil sa pagyanig, samantalang ang landslide ay pagguho ng lupa o bato pababa ng dalisdis.

PAALALA:

Ang impormasyong ito ay para sa edukasyon at kamalayan lamang. Para sa opisyal na impormasyon, makinig at sumunod sa babala ng DOST-PHIVOLCS.

Ano nga ba ang COASTAL UPLIFT?

Ang Coastal Uplift o pag-angat ng baybayin ay isang pangyayaring geolohikal kung saan ang bahagi ng lupa sa tabing-dagat ay biglang umaangat dahil sa malakas na lindol o paggalaw ng fault sa ilalim ng lupa.

Paano Ito Nangyayari?

1. Nagkakaroon ng malakas na lindol sa ilalim ng dagat o malapit sa baybayin.
2. Gumagalaw ang mga tectonic plate at fault.
3. Ang bahagi ng lupa ay biglang umaangat ng ilang sentimetro hanggang ilang metro.
4. Ang dating nakalubog na coral reefs, bato, at seabed ay nalalantad sa hangin.
5. Umatras ang dating linya ng baybayin (shoreline).

Mga Palatandaan ng Coastal Uplift

✅ Nalalantad ang mga coral reef at bahura
✅ Lumalawak ang dalampasigan
✅ Umatras ang shoreline
✅ Nagbabago ang lalim ng tubig malapit sa pampang
✅ Maaaring maapektuhan ang mga pantalan at daungan

Halimbawa: Sarangani Earthquake 2026
Kasunod ng M7.8 Offshore Sarangani Earthquake noong 8 Hunyo 2026, naobserbahan sa Glan, Sarangani at Jose Abad Santos, Davao Occidental ang: Tinatayang ~2 metrong pag-angat ng lupa ~200 metrong pag-atras ng shoreline at pagkalantad ng mga coral reef na dating nasa ilalim ng dagat

Bakit Mahalaga Ito?

1.Nakaaapekto sa pangingisda at coral reef ecosystems
2. Maaaring magbago ang ruta ng mga bangka
3. Mahalaga sa pag-aaral ng lindol at tectonic movement
4. Nagbibigay ng ebidensya kung paano gumalaw ang fault sa panahon ng lindol.

PAALALA:

Ang impormasyong ito ay para sa edukasyon at kamalayan lamang. Para sa opisyal na impormasyon, makinig at sumunod sa babala ng DOST-PHIVOLCS.

As we resume classes next week for the remaining SDOs, please keep the following in mind to ensure a smooth, and safe transition back to school:

1. Well-being First (Kumustahan & PFA)
Our absolute priority during the first few days is the socio-emotional well-being of our learners and teachers.
a. Begin with Kumustahan and Psychological
First Aid (PFA).
b. Conduct necessary orientations before
officially starting the instructional block.

2. Flexible Assessment Timeline
Do not rush or force the completion of
assessments such as the CRLA, RMA, and
Phil-IRI.
a. Per DO 9, the end of term window for
conducting these assessments extends until
July 10, 2026.
b. Take your time to ensure an accurate and
stress-free assessment process.

3. Safety and Preparedness
In light of recent events, we must remain vigilant. Please ensure that earthquake drills and safety protocols are strengthened and strictly practiced in your respective schools.

4. Contextualized Learning Plans
Because each Division faces unique circumstances, please coordinate closely with your respective SDOs for the specific details of your Learning and Service Continuity Plan.

Stay safe, everyone.


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As we resume classes next week for the remaining SDOs, please keep the following in mind to ensure a smooth, and safe transition back to school:

1. Well-being First (Kumustahan & PFA)
Our absolute priority during the first few days is the socio-emotional well-being of our learners and teachers.
a. Begin with Kumustahan and Psychological
First Aid (PFA).
b. Conduct necessary orientations before
officially starting the instructional block.

2. Flexible Assessment Timeline
Do not rush or force the completion of
assessments such as the CRLA, RMA, and
Phil-IRI.
a. Per DO 9, the end of term window for
conducting these assessments extends until
July 10, 2026.
b. Take your time to ensure an accurate and
stress-free assessment process.

3. Safety and Preparedness
In light of recent events, we must remain vigilant. Please ensure that earthquake drills and safety protocols are strengthened and strictly practiced in your respective schools.

4. Contextualized Learning Plans
Because each Division faces unique circumstances, please coordinate closely with your respective SDOs for the specific details of your Learning and Service Continuity Plan.

Stay safe, everyone.

Maligayang Araw ng Kalayaan! 🇵🇭

Sa pagdiriwang ng ika-128 anibersaryo ng Proklamasyon ng Kalayaan ng Pilipinas, kaisa ang Kagawaran ng Edukasyon sa pagpupugay sa katapangan at sakripisyo ng ating mga bayani na nagbukas ng landas tungo sa ating kasarinlan.

Nawa’y magsilbing inspirasyon ang kanilang pamana upang patuloy nating mahalin ang bayan, pahalagahan ang kalayaan, at magkaisa para sa mas maunlad na kinabukasan ng bansa.

Magnitude at Intensity, ano ang kaibahan nila?

DISCLAIMER: This infographic contains AI-generated visual elements. Geographic representations, measurements, and scientific details should be cross-checked with official references from DOST-PHIVOLCS, NAMRIA, and other authoritative agencies. This material is intended for information and awareness purposes only.

ANO ANG AFTERSHOCK?

Ang aftershock ay mga kasunod na pagyanig na nagaganap matapos ang isang malakas na lindol o *mainshock*. Kadalasan, ang mga ito ay mas mahina kaysa sa naunang malakas at mapaminsalang lindol.

Ang ilan sa mga aftershock ay maaaring may sapat na lakas upang maramdaman at maaari pang magdulot ng karagdagang pinsala sa mga estrukturang humina o nasira na ng mainshock. Maaaring maranasan ang mga ito sa loob ng ilang araw, linggo, o maging buwan matapos ang pangunahing lindol.

Sa pangkalahatan, habang mas malakas ang mainshock, mas marami ang inaasahang aftershocks at mas matagal ang panahong maaaring maranasan ang mga ito.

Kasunod ng M7.8 na lindol sa offshore Sarangani, inaasahan ang mga aftershock. Pinapayuhan ang publiko na umiwas muna sa mga gusali at iba pang estrukturang maaaring napinsala ng lindol dahil maaari itong lalong humina o gumuho kapag niyanig ng mga susunod na aftershock.

Patuloy na makinig sa mga opisyal na abiso mula sa DOST-PHIVOLCS at sa inyong lokal na pamahalaan para sa mga update at paalala sa kaligtasan.


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ANO ANG AFTERSHOCK?

Ang aftershock ay mga kasunod na pagyanig na nagaganap matapos ang isang malakas na lindol o *mainshock*. Kadalasan, ang mga ito ay mas mahina kaysa sa naunang malakas at mapaminsalang lindol.

Ang ilan sa mga aftershock ay maaaring may sapat na lakas upang maramdaman at maaari pang magdulot ng karagdagang pinsala sa mga estrukturang humina o nasira na ng mainshock. Maaaring maranasan ang mga ito sa loob ng ilang araw, linggo, o maging buwan matapos ang pangunahing lindol.

Sa pangkalahatan, habang mas malakas ang mainshock, mas marami ang inaasahang aftershocks at mas matagal ang panahong maaaring maranasan ang mga ito.

Kasunod ng M7.8 na lindol sa offshore Sarangani, inaasahan ang mga aftershock. Pinapayuhan ang publiko na umiwas muna sa mga gusali at iba pang estrukturang maaaring napinsala ng lindol dahil maaari itong lalong humina o gumuho kapag niyanig ng mga susunod na aftershock.

Patuloy na makinig sa mga opisyal na abiso mula sa DOST-PHIVOLCS at sa inyong lokal na pamahalaan para sa mga update at paalala sa kaligtasan.

🎯GO BAG FOR EARTHQUAKES

BE PREPARED. STAY SAFE. SAVE LIVES.

A Go Bag can help you and your family survive for at least 72 hours after a disaster.

⸻

WHAT SHOULD BE INSIDE YOUR GO BAG?

1. WATER

Enough drinking water for 3 days

2. FOOD

Ready-to-eat and non-perishable food

3. EMERGENCY TOOLS

* Flashlight
* Extra batteries
* Whistle
* Battery-operated radio

4. COMMUNICATION

* Mobile phone charger
* Power bank
* Emergency contact list

5. HEALTH & SAFETY

* First Aid Kit
* Prescription medicines
* Face masks
* Alcohol or sanitizer

6. CLOTHING

* Extra clothes
* Raincoat
* Blanket or towel

7. IMPORTANT DOCUMENTS

* IDs
* Birth certificates (copies)
* Insurance papers
* Emergency contact information

8. CASH & KEYS

* Emergency cash
* Spare keys

9. SPECIAL NEEDS

* Baby supplies
* Elderly care items
* Pet food and supplies

✅ GO BAG REMINDERS

✔ Keep it near your exit door.

✔ Check contents every 6 months.

✔ Replace expired food, water, and medicines.

✔ Make sure every family member knows where it is.

🚨 OPLAN BANGON SARANGANI 🚨

Sarangani needs your help. Now more than ever, we call on your generosity, compassion, and solidarity.

In the wake of the recent disaster, many of our schools, learners, families, and communities are facing challenges and urgently need assistance. Together, let us rise, rebuild, and bring hope to those affected.

📢 To all schools and communities in Sarangani:

We kindly ask you to help us gather accurate information on the current situation in your area. Please access the link below and share the needs, concerns, and status of your school or community.

🤝 To our partners, sponsors, donors, organizations, and individuals who wish to extend assistance:

Your support can make a significant difference in the lives of those affected. You may also access the same link for details on how you can help and support our recovery efforts.

📊 For consolidated reports and real-time updates, please visit our Data Dashboard.

Every response matters. Every donation counts. Every act of kindness brings hope.

Together, let us help Sarangani rise stronger than before.

💙 Bangon Sarangani. Bangon Tayo.

🚨 OPLAN BANGON SARANGANI 🚨

Sarangani needs your help. Now more than ever, we call on your generosity, compassion, and solidarity.

In the wake of the recent disaster, many of our schools, learners, families, and communities are facing challenges and urgently need assistance. Together, let us rise, rebuild, and bring hope to those affected.

📢 To all schools and communities in Sarangani:

We kindly ask you to help us gather accurate information on the current situation in your area. Please access the link below and share the needs, concerns, and status of your school or community.

🤝 To our partners, sponsors, donors, organizations, and individuals who wish to extend assistance:

Your support can make a significant difference in the lives of those affected. You may also access the same link for details on how you can help and support our recovery efforts.

📊 For consolidated reports and real-time updates, please visit our Data Dashboard.

Every response matters. Every donation counts. Every act of kindness brings hope.

Together, let us help Sarangani rise stronger than before.

💙 Bangon Sarangani. Bangon Tayo.

The Cotabato Trench is a deep ocean trench located off the southwestern coast of Mindanao, in the southern Philippines. It is a major tectonic boundary where part of the Sunda Plate is being forced beneath the Philippine Mobile Belt through a process called subduction.

🎯Key fact:

Location: Offshore southwest Mindanao, near the Moro Gulf and Celebes Sea.
Type: Oceanic subduction trench.
Tectonic activity: One of the Philippines' most active earthquake-generating zones.
Hazard: Capable of producing large earthquakes and tsunamis that can affect Mindanao and nearby regions.

🎯Notable earthquakes

The trench has generated several major earthquakes:
1918 Celebes Sea earthquake (magnitude ~8.3)
1976 Moro Gulf earthquake (magnitude ~8.0), which triggered a devastating tsunami and caused about 4,000 deaths
2002 Mindanao earthquake (magnitude ~7.5)

🎯Recent relevance

On June 8, 2026, a powerful magnitude 7.8 earthquake occurred near General Santos and was attributed to movement along the Cotabato Trench. The quake generated tsunami waves and prompted warnings in the Philippines, Indonesia, and Malaysia.

🎯Why it matters

The Cotabato Trench is considered one of the Philippines' most significant tsunami sources. Scientists monitor it closely because future large earthquakes could produce tsunami run-ups of several meters along parts of Mindanao's coast.

In simple terms, the Cotabato Trench is an underwater fault zone south of Mindanao where tectonic plates collide, making it a major source of earthquakes and tsunami hazards in the southern Philippines.

DISCLAIMER: This infographic contains AI-generated visual elements. Geographic representations, measurements, and scientific details should be cross-checked with official references from DOST-PHIVOLCS, NAMRIA, and other authoritative agencies. This material is intended for information and awareness purposes only.