Geography
Presentation on Lava Flow
Lava flows although generally slower moving and less catastrophic than pyroclastic flows still remain dangerous. It have temperatures in excess of 200 degrees Celsius. Therefore…
Lecture
Geography
How do Pyroclastic Flows cause devastation?
The aim of this lecture is to present on How do Pyroclastic Flows cause devastation? The direct force of a pyroclastic flow traveling at 10’s of metres…
Geography
Lecture on Pyroclastic Flow
Prime purpose of this lecture is to present on Pyroclastic Flow. Pyroclastic Flow is a dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively…
Geography
Volcanic Eruptions
Basic purpose of this lecture is to present on Volcanic Eruptions. A volcano is a vent or ‘chimney’ that connects molten rock (magma) from within the Earth’s…
Geography
Lecture on Volcanoes
General purpose of this lecture is to present on Volcanoes. A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows…
Geography
Parts of Volcano
A volcano is a mountain that forms when magma reaches the surface of the Earth. Magma rises because it is less dense than the solid rock…
Geography
Streams and Floods
Primary objective of this lecture is to present on Streams and Floods. Stream is a body of running water that is confined in a channel and moves…
Geography
Lecture on Weather Forecasting
Prime purpose of this lecture is to present on Weather Forecasting. Weather predictions are based on information about air masses, fronts, and associated pressure systems in an…
Geography
Avalanches and Transportation
This lecture focus to describe on Avalanches and Transportation. Avalanches and transportation includes: highways and railways; control and reduction; high cost of link closure and potential for disaster. There are several…
Geography
Lecture on Snow Avalanches
Avalanches are falling mass of snow and/or ice; a mass-wasting process and analogous to debris flows or mudslides. It is a natural hazard – threat to life and…
Geography
Presentation on Earthquake Safety
For earthquake safety your emergency supplies should include enough non perishable food for the whole family to last several days. Stay away from windows, bookcases, file…
Geography
Lecture on Earthquakes
Earthquakes means shaking or trembling caused by the sudden release of energy. Usually associated with faulting or breaking of rocks. Continuing adjustment of position results in aftershocks. Here…
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