Physical Geography

Key Exam Oriented Topics — Geography
1

Geomorphology

1.1 Universe and Earth's Origin

Origin theories: Big Bang, nebular hypothesis; formation of the solar system; geological history of Earth and major evolutionary stages.

1.2 Earth's Interior

Structure and composition of crust, mantle, core; seismic waves (P & S waves), shadow zones; evidence for internal structure.

1.3 Rocks and Minerals

Types of rocks: igneous, sedimentary, metamorphic; rock cycle; major minerals forming the crust and their characteristics.

1.4 Earth Movements

Endogenic & exogenic forces; isostasy; continental drift; seafloor spreading; plate tectonics; earthquakes; volcanoes; tsunamis; orogenesis.

1.5 Landforms and Evolution

Landforms formed by rivers, wind, glaciers, waves; erosional and depositional features; landscape evolution over geological time.

2

Climatology

2.1 Atmosphere

Composition of atmospheric gases; structure of layers — troposphere, stratosphere, mesosphere, thermosphere, exosphere.

2.2 Insolation and Temperature

Solar radiation, Earth’s heat budget; factors influencing temperature distribution; temperature inversion and its impacts.

2.3 Pressure and Winds

Pressure belts of the world; planetary & local winds; monsoons, jet streams, land/sea breezes; global atmospheric circulation.

2.4 Weather Systems

Air masses; fronts; tropical cyclones, temperate cyclones; thunderstorms; tornadoes; associated weather patterns.

2.5 Water in the Atmosphere

Humidity, condensation, cloud formation; forms of precipitation — rain, snow, hail; global rainfall distribution.

2.6 Climatic Zones

Major climatic types (equatorial, monsoon, desert, tundra, polar); global climate change and human impacts.

3

Oceanography

3.1 Ocean Relief

Major features: continental shelf, slope, abyssal plains, mid-ocean ridges, trenches; mapping and classification.

3.2 Temperature and Salinity

Distribution of temperature and salinity in oceans; thermocline; factors affecting variations.

3.3 Ocean Movements

Waves, tides, and currents (warm & cold); their effects on climate, navigation, and fishing.

3.4 Marine Resources

Biotic resources (fish), mineral resources (manganese nodules), and energy resources (tidal, wave, OTEC).

3.5 Oceanic Phenomena

Coral reefs, coral bleaching; El Niño & La Niña and their global climatic impacts.

4

Biogeography

4.1 Soil

Soil formation, types, soil profile; erosion, degradation processes; conservation techniques.

4.2 Vegetation

Factors controlling distribution of plants & animals; major biomes; deforestation & conservation strategies.

4.3 Environmental Geography

Ecology basics; ecosystems and biodiversity; environmental degradation; conservation; natural hazards (floods, droughts, landslides); climate change.