PHYSICAL GEOGRAPHY FULL NOTES (FORM 1 – FORM 6)
INTRODUCTION TO PHYSICAL GEOGRAPHY
Physical Geography is the branch of geography that studies the natural features of the Earth and the processes that shape them. It focuses on landforms, climate, water bodies, soils, vegetation, and natural processes such as erosion, weathering, and plate tectonics.
Major Components:
Lithosphere (rocks and landforms)
Atmosphere (air and weather)
Hydrosphere (water bodies)
Biosphere (living organisms)
FORM 1 PHYSICAL GEOGRAPHY NOTES
1. Meaning of Geography
Geography is the study of the Earth, its physical features, climate, population, and human activities.
Branches:
Physical Geography
Human Geography
2. The Earth and the Solar System
The Solar System consists of:
Sun (center)
Planets (Mercury to Neptune)
Satellites (moons)
Asteroids and comets
The Earth:
Third planet from the sun
Supports life due to oxygen and water
Rotates and revolves
3. The Shape and Size of the Earth
The Earth is an oblate spheroid (slightly flat at poles and bulging at equator).
Evidence:
Satellite images
Circumnavigation
Horizon appearance
4. Rotation and Revolution
Rotation:
Earth spins on its axis
Takes 24 hours
Causes day and night
Revolution:
Earth moves around the sun
Takes 365¼ days
Causes seasons
5. Map Work Basics
Types of Maps:
Physical maps
Political maps
Thematic maps
Map Elements:
Title
Scale
Key/legend
Compass direction
FORM 2 PHYSICAL GEOGRAPHY NOTES
1. Rocks and Minerals
Types of Rocks:
Igneous Rocks
Formed from cooling magma
Examples: basalt, granite
Sedimentary Rocks
Formed by deposition of sediments
Examples: limestone, sandstone
Metamorphic Rocks
Changed by heat and pressure
Examples: marble, gneiss
2. Rock Cycle
Rocks change from one type to another through weathering, melting, and pressure.
3. Weathering
Types:
Physical weathering (temperature changes)
Chemical weathering (reaction with water/oxygen)
Biological weathering (plants and animals)
4. Soil Formation
Soil is formed from:
Weathered rocks
Organic matter
Water and air
Soil Layers:
Topsoil
Subsoil
Parent rock
5. Major Landforms
Mountains
Plateaus
Plains
Valleys
FORM 3 PHYSICAL GEOGRAPHY NOTES
1. Earth Movements and Plate Tectonics
The Earth’s crust is divided into plates that move.
Types of Movements:
Convergent (collision)
Divergent (moving apart)
Transform (sliding)
Results:
Earthquakes
Volcanoes
Fold mountains
2. Volcanoes
Types:
Active
Dormant
Extinct
Features:
Magma chamber
Crater
Lava flow
3. Earthquakes
Caused by sudden movement of tectonic plates.
Measurement:
Richter scale
Seismograph
4. Folding and Faulting
Folding creates mountains (e.g., Himalayas)
Faulting creates rift valleys (e.g., East African Rift Valley)
5. Climate and Weather Basics
Weather:
Short-term atmospheric conditions
Climate:
Long-term weather pattern
FORM 4 PHYSICAL GEOGRAPHY NOTES
1. Atmosphere
The atmosphere is a layer of gases surrounding the Earth.
Layers:
Troposphere (weather)
Stratosphere (ozone layer)
Mesosphere
Thermosphere
2. Weather Elements
Temperature
Rainfall
Wind
Humidity
Pressure
3. Rainfall Formation
Types:
Convectional rainfall
Orographic rainfall
Cyclonic rainfall
4. Winds
Types:
Permanent winds
Seasonal winds
Local winds (e.g., sea breeze)
5. Climate Types
Tropical climate
Desert climate
Temperate climate
FORM 5 PHYSICAL GEOGRAPHY NOTES
1. Hydrosphere
The hydrosphere includes all water bodies.
Water Bodies:
Oceans
Rivers
Lakes
Groundwater
2. Ocean Movements
Types:
Waves
Tides
Ocean currents
3. River Systems
Parts of a river:
Source
Tributary
Mouth
River Processes:
Erosion
Transportation
Deposition
4. Landforms Created by Rivers
Waterfalls
Floodplains
Deltas
Meanders
5. Environmental Issues
Soil erosion
Deforestation
Pollution
Climate change
FORM 6 PHYSICAL GEOGRAPHY NOTES
1. Advanced Climate Studies
Climate Change Causes:
Greenhouse gases
Deforestation
Industrial pollution
Effects:
Global warming
Sea level rise
Droughts and floods
2. Natural Resources
Types:
Renewable (solar, wind)
Non-renewable (minerals, oil)
3. Environmental Conservation
Methods:
Afforestation
Recycling
Sustainable agriculture
4. Population and Environment Interaction
Human activities affect:
Land use
Water quality
Air pollution
5. Map Interpretation and Fieldwork
Skills:
Reading contour lines
Measuring distance
Identifying landforms
EXAM REVISION SUMMARY
Key Topics to Focus:
Rocks and rock cycle
Plate tectonics
Climate and weather
Rivers and erosion
Atmosphere layers
Environmental conservation
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