✅ Lesson Objectives

At the end of the lesson, students are expected to:

Cognitive
Explain how geological maps indicate areas susceptible to landslides and sinkholes.

Affective
Appreciate the importance of hazard mapping in ensuring community safety.

Psychomotor
Identify and mark landslide- and sinkhole-prone zones on a geological or hazard map.

✅ Lesson Objectives

At the end of the lesson, students are expected to:

Cognitive
Explain how geological maps indicate areas susceptible to landslides and sinkholes.

Affective
Appreciate the importance of hazard mapping in ensuring community safety.

Psychomotor
Identify and mark landslide- and sinkhole-prone zones on a geological or hazard map.

🎨 Understanding MGB Hazard Colors

MGB maps use a simple color system to show risk levels.

Common map features include:

• 🌧️ Landslide Hazard Colors

• 🔴 Red – High Susceptibility
  Area is very prone to landslides. Avoid construction and evacuation may be needed.

• 🟠 Orange – Moderate Susceptibility
  Landslides may occur during heavy rainfall.

• 🟡 Yellow – Low Susceptibility
  Less likely but still requires monitoring.

• 🟢 Green – No Identified Hazard
  Generally safe but still observe environmental changes.

• 👉 Red zones require immediate attention during storms

• 📍 Symbols → Specific hazard types

• 📖 Legend → Explains colors and symbols
  
  

🗺️ Map Symbols and Features

Every MGB map includes a legend. This is the key to reading the map.

Important features:

📖 Legend – explains hazard colors
📍 Barangay boundaries – shows community areas
🌊 Rivers and drainage – possible erosion zones
⛰️ Slope areas – landslide-prone terrain
🧭 Compass and scale – map orientation and distance

👉 Always read the legend before interpreting the map.

🗺️ Map Symbols and Features

Every MGB map includes a legend. This is the key to reading the map.

Important features:

📖 Legend – explains hazard colors
📍 Barangay boundaries – shows community areas
🌊 Rivers and drainage – possible erosion zones
⛰️ Slope areas – landslide-prone terrain
🧭 Compass and scale – map orientation and distance

👉 Always read the legend before interpreting the map.

⛰️ Reading Contour Lines and Slopes

Contour lines show elevation and slope steepness.

• Closely spaced lines = steep slope ⚠️

• Widely spaced lines = gentle slope ✅

• Steep slopes = higher landslide risk

• Flat areas = lower landslide risk
  
  

Slope angle is one of the strongest indicators of landslide susceptibility.

🕳️ Sinkhole-Prone Zones in MGB Maps

Sinkholes are common in limestone or karst regions.

Signs on maps include:

• Underground erosion zones

• Groundwater extraction areas

• Mining or excavation sites

• Soft soil regions
  
  

These areas may collapse without warning.

🧠 How to Interpret a Map

When reading an MGB map:

1. Read the legend first

2. Identify hazard colors

3. Locate your barangay

4. Check nearby slopes or rivers

5. Determine risk level

6. Plan safe routes
   
   

👉 Map reading is a survival skill.

🌍 Why This Lesson Matters

Understanding hazard maps helps students:

✅ Protect their families
✅ Recognize danger zones
✅ Support community preparedness
✅ Make safer decisions
✅ Build disaster awareness

Knowledge of maps saves lives.