LANDFORMS ASSOCIATED WITH VOLCANIC ACTIVITIES
Volcanic activities have a profound influence on the earth’s landforms. Solid, liquid or gaseous materials…
PHYSICAL GEOGRAPHY
THE INFLUENCE OF ROCK TYPES ON LANDSCAPES
The appearance and characterstic features of landforms are greatly influenced by the underlying rock type….
THE CLASSIFICATION OF ROCKS
The earth’s crust is made up of various types of rocks, differing from one another…
THE INTERNATIONAL DATE LINE
A traveller going eastwards gains time from Greenwich until he reaches the meridian 180°E when…
STANDARD TIME AND TIME ZONES
If each town were to keep the time of its own meridian, there would be…
PLANTS AND THE ECOSYSTEM
All living things as well as the physical environment in which they live interact with…
VEGETATION DESCRIPTION
Vegetation is usually described by reference to its flora or floristic (species) composition and its…
SUCCESSION
Vegetation is never static; it is continually changing in composition and structure. This is because…
HABITAT FACTORS
The area of land or site occupied by a given plant or plant community is…
DEFINITION OF VEGETATION
Vegetation refers to the community of different kinds or species of plants growing together in…
CYCLONIC ACTIVITY
Tropical Cyclones, Typhoons, Hurricanes and Tornadoes All these are different kinds of tropical cyclones. They…
FOHN WIND OR CHINOOK WIND
Both the Fohn and Chinook winds are dry winds experienced on the leeward side of…
SEASONAL CHANGES IN PRESSURE ON THE GLOBE
As the greater part of the globe experiences seasonal changes in temperature, it is to…
ATMOSPHERIC AIR PRESSURE AND WINDS
Atmospheric pressure is the most important factor influencing climate, since differences of air pressure cause…
OTHER FORMS OF CONDENSATION
1) Snow: This is formed when water vapour condenses in the atmosphere at temperatures below…
TYPES OF RAINFALL
There are three major types of rainfall. 1) Convectional rainfall: This type of rainfall is…
FEATURES OF CONDENSATION
The cooling of moist air and the condensation and precipitation of water are brought about…
WATER VAPOUR IN THE ATMOSPHERE
As a result of evaporation from oceans and seas, water is absorbed into the air…
REVOLUTION OF THE EARTH
When the earth revolves round the sun, it travels on an elliptical orbit at a…
TEMPERATURE AS AN ELEMENT OF CLIMATE
The Importance of Temperature Temperature influences the actual amount of water vapour present in the…
THE ELEMENTS OF WEATHER AND CLIMATE
To collect various climatic data and to prepare maps and charts of them, the following…
THE ATMOSPHERE
The atmosphere encloses the globe and is made up of gases and vapour, and receives…
THE COOL TEMPERATE GRASSLANDS (STEPPE AND PRAIRIE)
Distribution Bordering the deserts, away from the Mediterranean regions and in the interiors of continents,…
THE COOL TEMPERATE REGIONS (EASTERN MARGINS)
Laurentian Type Distribution The Cool Temperate Eastern Margin (Laurentian) Climate is an intermediate type of…
THE COOL TEMPERATE REGIONS (WESTERN MARGINS)
British Type Distribution The cool temperate western margins are under the permanent influence of the…
THE WARM TEMPERATE REGIONS (EASTERN MARGINS)
China type Distribution This type of climate is found on the eastern margins of continents…
THE WARM TEMPERATE REGIONS (WESTERN MARGINS)
Mediterranean Type Distribution The Warm Temperate Western Margin Climate is found in relatively few areas…
THE COLD TEMPERATE FOREST REGIONS (SIBERIAN TYPE)
Distribution The Cold Temperate Continental (Siberian) Climate is experienced only in the northern hemisphere, where…
THE SAVANNA REGIONS
Distribution The Savanna or Sudan Climate is a transitional type of climate found between the…
THE TROPICAL DESERT AND TEMPERATE DESERT
Distribution Deserts are regions of scanty rainfall which may be hot like the hot deserts…
LAND AND SEA BREEZES AND MONSOONS
Land and sea breezes are, in fact, monsoons on a smaller scale. Both are basically…
THE ORIGIN OF VOLCANOES
The ancient Greeks believed the volcanic eruptions occurred when Vulcan, the God of Fire, stoked…