INTERNAL LAND-FORMING PROCESSES

Earth movements.
Causes of earth movements.

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

Differentiate between internal and external land forming processes.
Differentiate between crustal compressional and tensional forces.
Explain effects of horizontal earth movements.

Probing questions.
Brief discussion on compression, tension, upwarping, downwarping, and shearing of crustal rocks.
Drawing illustrative diagrams.

KLB
GEOGRAPHY
BOOK II.

PAGES
1-2

INTERNAL LAND-FORMING PROCESSES

Results of earth movements.
Theory of Continental Drift.

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

Identify landforms resulting from earth movements.

Discussion & drawing of illustrative diagrams.

Illustrative diagrams.

KLB
GEOGRAPHY
BOOK PAGES
2-3

INTERNAL LAND-FORMING PROCESSES

The Plates Tectonic Theory.
Folding.

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

Explain the Plates Tectonic Theory.

Exposition of the theory & discussion on evidence of the theory.
Drawing diagrams showing meeting of tectonic plates.

Illustrative diagrams.

KLB
GEOGRAPHY
BOOK PAGES
5-6

INTERNAL LAND-FORMING PROCESSES

Types of folds.

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

Identify types of folds.
Describe various folding processes.

Exposition of types of folds and resulting landforms.

Illustrative diagrams.

KLB
GEOGRAPHY
BOOK PAGES
9-11

INTERNAL LAND-FORMING PROCESSES

Features resulting from folding.
Significance of folding.

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

Describe landforms resulting from folding.

Discussion & drawing labelled diagrams of landforms.

Illustrative diagrams.
Map: World distribution of fold mountains.

KLB
GEOGRAPHY
BOOK

INTERNAL LAND-FORMING PROCESSES

Faulting.
Types of faults.

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

Define faulting.
Identify parts associated with a fault.

Q/A: review horizontal and vertical earth movements.
Discussion on parts associated with a fault.

Illustrative diagrams.

KLB
GEOGRAPHY
BOOK PAGES
13-14

INTERNAL LAND-FORMING PROCESSES

Features resulting from faulting.

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

Describe landforms resulting from faulting.

Discussion &
Drawing illustrative diagrams.

Illustrative diagrams.

KLB
GEOGRAPHY
BOOK PAGES
14-19

INTERNAL LAND-FORMING PROCESSES

The Great Rift Valley.

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

Trace the Great Rift Valley on a map.
Describe parts of the Great Rift Valley.

Case study.
The Afro-Arabian rift system.

Map: The Afro-Arabian rift system.

KLB
GEOGRAPHY
BOOK PAGE 21

INTERNAL LAND-FORMING PROCESSES

The Gregory Rift Valley.
Significance of faulting.

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

Trace the Gregory Rift Valley on a map.
Describe the parts of the Gregory Rift Valley.

Case study.
The Gregory rift system.

Map / chart: Kenyan?s rift system and the associated highlands.

KLB
GEOGRAPHY
BOOK PAGES 21-22

INTERNAL LAND-FORMING PROCESSES

Vulcanicity and Earthquakes. Definitions associated with vulcanicity and volcanicity.

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

Differentiate between vulcanicity and volcanicity.
Differentiate between intrusive and extrusive features.

Exposition of new concepts & brief discussion.

KLB
GEOGRAPHY
BOOK PAGES 24-25

INTERNAL LAND-FORMING PROCESSES

Intrusive features.

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

Identify various intrusive features.
Explain formation of various intrusive features.
Illustrate intrusive features with labelled diagrams.

Exposition of new concepts.
Probing questions.
Drawing illustrative diagrams.

Illustrative diagrams.

KLB
GEOGRAPHY
BOOK PAGES 32-34

INTERNAL LAND-FORMING PROCESSES

Extrusive features.
Types of volcanoes.

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

Identify various extrusive volcanic features.
Illustrate extrusive volcanic features with labelled diagrams.

Give examples of extrusive features in Africa. Discussion.
Assignment.

Pictures in various textbooks.

KLB
GEOGRAPHY
BOOK PAGES 25-27

INTERNAL LAND-FORMING PROCESSES

Distribution of volcanoes and volcanic features.

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

Identify volcanic regions in Kenya and in Africa.

Drawing map of Kenya & Africa and showing the distribution of volcanoes and volcanic features.

Maps: Volcanic regions in Kenya, Africa and in the World.

KLB
GEOGRAPHY
BOOK PAGES 30-35

INTERNAL LAND-FORMING PROCESSES

Positive influences of vulcanicity.
Negative influences of vulcanicity.

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

Explain ways in which vulcanicity is beneficial to man.

Q/A and detailed discussion.

KLB
GEOGRAPHY
BOOK PAGES
35-36

INTERNAL LAND-FORMING PROCESSES

Earthquakes. Definitions associated with earthquakes.
Causes of earthquakes.

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


Give definitions associated with earthquakes.

Q/A definition of earthquake, shockwaves.
Exposition of new terms:
Seismology, epicentre, focus, tsunamis, tremors.
Drawing relevant diagrams.

Illustrative diagrams.

KLB
GEOGRAPHY
BOOK PAGE 37

INTERNAL LAND-FORMING PROCESSES

Types of earthquakes and waves. Measurement of earthquakes.

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

Describe primary and secondary seismic waves.
Identify scales used to determine the intensity and magnitude of an earthquake.

Brief discussion: primary and secondary waves.
Exposition of basic terms:
Mercalli scale and Richter scale.
Open discussion.

Newspaper extracts on intensity and magnitude of earthquakes.

KLB
GEOGRAPHY
BOOK PAGES 38-39

INTERNAL LAND-FORMING PROCESSES

Effects of earthquakes.

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

Outline effects of earthquakes & tremors.

Q/A and brief discussion.

Newspaper cuttings outlining effects of earthquakes.

KLB
GEOGRAPHY
BOOK PAGES
40-41