Lecture on Igneous Rocks
Igneous rocks are formed by the cooling and hardening of molten rocks. There are two types of Igneous Rocks. Extrusive/Volcanic Rocks. When magma reaches the surface it…
Geography
Presentation on Rocks
Principle objective of this lecture is to present on Rocks. A rock is a naturally occurring solid mixture of one or more minerals. Rocks are classified by how…
Presentation on Pangea
This lecture introduce on Pangea. Pangaea was a super continent at one time. Scientists use the similarity of rock types and fossil types that date to the same…
Presentation on Mid-Plate Hotspots
The aim of this lecture is to present on Mid-Plate Hotspots. Whilst most tectonic activity is focused on plate margins, it is possible for earthquakes and volcanoes…
Lecture on Transform Plates
Transform Plate Boundaries are locations where two plates slide past one another. The fracture zone that forms a transform plate boundary is known as a…
Presentation on Divergent Plates
Basic objective of this lecture is to present on Divergent Plates. Divergent boundaries in the middle of the ocean contribute to seafloor spreading. As plates made of…
Presentation on Convergent Plates
General objective of this lecture is to present on Convergent Plates. In plate tectonics, a convergent boundary, also known as a destructive plate boundary (because of subduction),…
Tectonic Plate Types
There are three kinds of plate tectonic boundaries: divergent, convergent and transform plate boundaries. Convergent – plates move toward one another. Divergent – plates move away from each other. Transform…
Flood Basalts
Principle purpose of this lecture is to present on Flood Basalts. Basalt is a type of rock that is produced from the mantle. Flood basalts are yet another…
Lecture on Ocean Forces
This lecture introduce on Ocean Forces. Ocean Currents are influenced by two types of forces; 1. Primary Forces–start the water moving. The primary forces are: Solar Heating, Winds, Gravity and Coriolis effect. 2. Secondary…
Presentation on Tectonic Plates
This lecture introduce on Tectonic Plates. Today plate boundaries are determined by examining the location of volcanoes and earthquakes. Volcanoes result from the friction (heat) of the plates motion. Earthquakes occur…
Presentation on Earthquakes
Main objective of this lecture is to present on Earthquakes. Earthquakes are a result of motion within the earth. This only occurs where the earth is solid and…
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