Earth’s Spheres
The aim of this lecture is to present on Earth’s Spheres. A system is a group of related objects or parts that work together to form a…
Geography
Presentation on Geosphere
Prime purpose of this lecture is to present on Geosphere. The geosphere is the solid Earth that includes the continental and ocean crust as well the various…
Lecture on the Biosphere
The biosphere is the “life zone” of the Earth, and includes all living organisms (including humans), and all organic matter that has not yet decomposed. The…
Lecture on the Atmosphere
The Earth is surrounded by a blanket of air, which we call the atmosphere. The atmosphere consists of four unique layers (the troposphere, the stratosphere, the…
Earth Systems Overview
The Earth is a system consisting of four major interacting components: the atmosphere, the biosphere, the hydrosphere and the geosphere. Earth Systems Overview is the study of how the four spheres…
What is El Nino?
El Nino means warming of sea surface waters in the eastern Pacific Ocean caused by slowing of Pacific gyre. “Warm phase”, occurs every 3-7 years. The shift…
Lecture on Cloud Formation
General purpose of this lecture is to present on Cloud Formation. Formation of Clouds. Clouds are formed when air containing water vapor is cooled below a critical…
How Lightning Works?
Lightning transfers electrons from the atmosphere to Earth. Electrons build up in clouds because wind causes them to rub together (Charging by friction). The negative charges in…
Presentation on Hurricanes
Hurricanes are severe tropical storms that form in the southern Atlantic Ocean, Caribbean Sea, Gulf of Mexico, and in the eastern Pacific Ocean. Hurricanes gather heat…
Snowflake Symmetry: Rotations and Translations in Nature
This lecture introduce on Snowflake Symmetry: Rotations and Translations in Nature. Snowflakes are all six sided because of their chemistry. They are made of water molecules. Water molecules are…
Lecture on Lightning
Principle objective of this lecture is to present on Lightning. The action of rising and descending air within a thunderstorm separates positive and negative charges. Water and ice…
Earth’s Weather: Oceans and Air Temperature
This lecture introduce on Earth’s Weather: Oceans and Air Temperature. Here briefly focus on how do oceans affect temperature on land. The ocean plays a fundamental role…
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