What is Barometer?
Barometer is an instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude. It is widely used weather instrument that measures atmospheric pressure (also…
Geography
What is Air Pressure?
General purpose of this lecture is to present on What is Air Pressure. Air pressure is the weight of the atmosphere pressing down on the earth. It…
Presentation on Pesticides
The aim of this lecture is to present on Pesticides. Pesticides kill insects that will damage crops. They also kill harmless insects or can get washed into rivers…
What is Condensed Water Vapor?
This lecture introduce on Condensed Water Vapor. Condensation is the change of water from its gaseous form (water vapor) into liquid water. Condensation generally occurs in the…
What is Relative Humidity?
Principle objective of this lecture is to present on What is Relative Humidity. Relative Humidity is the amount of water vapour present in air expressed as a percentage…
Lecture on Jeopardy – Weather Patterns
Major objective of this lecture is to present on Jeopardy – Weather Patterns. By Jeopardy – Weather Patterns we can evaluate the condition of the Earth’s surface…
Presentation on Organic Farming
Organic Farming produces less food and is more expensive but it does not produce the pollution problems of intensive farming. Organic Agriculture is a production system that…
Lecture on Deforestation
Prime objective of this lecture is to present on Deforestation. Deforestation is the permanent destruction of forests in order to make the land available for other uses. Some…
Influence of Human Activity on the Environment
Basic objective of this lecture is to present on Influence of Human Activity on the Environment. Improvements in agriculture health and medicine have produced a dramatic rise…
Lecture on Carbonate-Silicate Cycle
General objective of this lecture is to present on Carbonate-Silicate Cycle. Earth has almost as much carbon dioxide as Venus. Volcanoes add carbon dioxide to the atmosphere. Carbon dioxide…
Lecture on Ice Ages
This lecture introduce on Ice Ages. Ice Ages are glacial episode during a past geological period. An ice age is a period of colder global temperatures and recurring…
Public Awareness on Hurricane
Major objective of this lecture is to present on Public Awareness on Hurricane. In the early part of this century, coastal residents may have had less than…
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