DepEd MELC reviewer for Grade 8 Science, Quarter 2. Master the concepts, tables, and common-mistake warnings below.
1
Earthquakes and Faults
Earthquakes occur when stress along a fault releases energy. The focus is underground; the epicenter is directly above on the surface.
| Term | Measures |
|---|---|
| Magnitude | Energy released (Richter) |
| Intensity | Effects felt (PHIVOLCS PEIS) |
⚠️ Common Mistake
Magnitude (one value, energy) ≠ Intensity (varies by location, damage felt).
2
Typhoons and PAGASA
The Philippines lies in the typhoon belt. PAGASA issues wind signals; PHIVOLCS monitors quakes and volcanoes.
3
Disaster Preparedness
💡 Exam Hack
During an earthquake: Duck, Cover, and Hold. Prepare a go-bag and know your evacuation route.
4
Staying Safe
Know the difference and respond correctly:
| Hazard | Agency | Key action |
|---|---|---|
| Earthquake | PHIVOLCS | Duck, cover, hold |
| Typhoon | PAGASA | Monitor signal, evacuate early |
📌 Quick Recap — Master These
Before your test, make sure you can confidently do each of the following:
- Explain and apply Earthquakes and Faults.
- Explain and apply Typhoons and PAGASA.
- Explain and apply Disaster Preparedness.
- Explain and apply Staying Safe.
Re-read any section above where you hesitate, then try the worked example again without looking.