Faulting and Folding (Diastrophism)

Grade 11 · Geography

Semester 1 | Period 1 | Week 1

Download the Lessonotes Mobile Liberia app for faster lesson access on Android and iPhone.

Get it on Google Play Get it on the Apple App Store

Subject: Geography

Semester: 1

Period: 1

Week: 1

School Name: _____________________________________
Teacher’s Name: __________________________________
Subject: Geography
Grade Level: Grade 11
Date: Week 1
Lesson Duration: 45 minutes
Week & Period: Week 1, Period 1
Topic: Faulting and Folding (Diastrophism)
Sub-topic: Plate Tectonics, Continental Drift, Types of Folding and Faulting

 

Learning Objectives

By the end of the lesson, students should be able to:

  1. Discuss faulting and folding as forces producing landforms.
  2. Differentiate between faulting and folding.
  3. Identify major landforms resulting from faulting and folding.
  4. Explain plate tectonics and the theory of continental drift.
  5. Analyze proofs of continental drift.

 

Previous Knowledge

Students already know:

  • Basic landforms: mountains, valleys, plateaus
  • Earth’s crust and surface features

 

Instructional Materials

  • Textbook: Geography for Senior Secondary Schools
  • Teaching aids: Globe, maps of tectonic plates, charts showing folds and faults
  • Students' notebooks and writing materials

 

Lesson Development – ABC Model

A – Anticipation (Warm-up / Starter)

Time: 5–10 minutes

Activity:

  • The teacher asks the class:
    • “Can anyone explain why some areas have mountains while others have valleys?”
    • “Have you heard of earthquakes or volcanic eruptions? What do you think causes them?”

Teacher’s Role:

  • Guide a short brainstorming session.
  • Record responses on the board.
  • Correct misconceptions about landform formation.

Learner’s Role:

  • Share existing ideas about earthquakes, mountains, and valleys.
  • Respond verbally and participate in discussion.

 

B – Building Knowledge (Main Lesson Body)

Time: 25–30 minutes

Teacher’s Role:

  • Explain plate tectonics: Definition, types of plates (oceanic and continental), and plate boundaries.
  • Show diagrams of convergent, divergent, and transform boundaries.
  • Explain effects of plate tectonics: earthquakes, mountain formation, volcanic activity.
  • Introduce continental drift theory, with proofs: matching coastlines, fossil records, rock and mineral similarities.
  • Explain types of folding: simple, asymmetrical, recumbent folds.
  • Explain types of faulting: normal, reverse, tear faults.
  • Use maps and real-world examples to reinforce learning.

Learners’ Activities (Expanded):

  • Take notes and label diagrams in notebooks.
  • Discuss in pairs the effects of plate movement.
  • Observe globe and maps to locate plate boundaries.

Assessment Checks:

  • Ask students to identify plate boundaries on a map.
  • Quick oral quiz: “Name two types of folds and two types of faults.”

Notes (Expanded & Detailed):

  • Plate tectonics: Movement of large plates of Earth’s crust, interaction at boundaries causes earthquakes and mountains.
  • Continental drift: Proposed by Alfred Wegener; continents slowly drifted from a single landmass (Pangaea). Proofs include: fossil correlation, rock formations, glacial deposits.
  • Folding: Compression of rock layers creates anticlines and synclines.
  • Faulting: Breaks in rocks due to stress; normal, reverse, and tear faults lead to valleys, escarpments, or ridges.

 

C – Consolidation (Conclusion & Assessment)

Time: 5–10 minutes

Summary:

  • Ask students to recall:
    • What is plate tectonics?
    • Give one proof of continental drift.
    • Name one type of fold and one type of fault.

Evaluation Method (Expanded):

  • Exit slip: Students write short answers to:
  1. Define plate tectonics.
  2. Give one example of a fold and a fault.
  3. State one evidence of continental drift.

Assignment (Expanded):

  • Draw diagrams of fold types and fault types.
  • Identify and label plate boundaries on a world map.
  • Research a recent earthquake or volcanic eruption and write a short paragraph on its causes.

Follow-up Activity:

  • Prepare a mini presentation on mountain landforms caused by folding and faulting.

 

Differentiation / Inclusive Strategies

  • Struggling Learners: Provide labeled diagrams and simplified notes.
  • Advanced Learners: Assign research on real-world plate boundary interactions.
  • Students with Disabilities: Use tactile maps or 3D models to demonstrate folds and faults.

 

Teacher’s Reflection (After Class)

  • What worked well? ______________________________________________________
  • What needs improvement? _________________________________________________
  • Students’ engagement level: □ High □ Medium □ Low
  • Next steps: Reinforce concepts with case studies of mountains and earthquake zones next week.