Plate Tectonics

The weakness of Wegner’s theory
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Introduction While the ancient fossils on different continents were often similar or identical, the exploring naturalists were finding out that living plants and animals on the different continents were often very different. The naturalists were discovering whole new groups of animals and plants on nearly every island and continent they visited. Most biological species seemed to be unique to the region or continent in which they were found. How could these seemingly contradictory observations be reconciled? Plate tectonics provided the…...
Explain How Folding Impacts on Landscape Development
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Plate tectonics help us to explain the process of folding. According to the theory of plate tectonics, the earth’s crust is broken up into sections called plates. These plates float on the semi-molten mantle. Thermal convection currents in the mantle drag these plates in different directions resulting in tectonic activity. Folding occurs when rock layers that were originally horizontal are bent into a series of wave-like folds. As a result of this collision of the earth’s tectonic plates, the rocks…...
Convection Currents and Earthquakes
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There are many different reasons why the earth's crust is moving. Some for example are the friction between two plates causing major earthquakes. Sometimes when this plates are pushed together they form fold mountains or ridges. Today we know that the continents are gradually moving apart. Therefore the there is new rocks created in between those areas. New volcanoes are created and new rocks are formed. Plate tectonics allow scientists to know about the earth's centre. The oceanic plate slides…...
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Earth Is Precious
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The seven continents are the seven main land areas on the Earth. Some are joined to each other, and some are completely surrounded by water. Some continents have a lot of countries, but others have only a few. Erin Ate Nine Sticky Apricots At Aprils. If you can remember this mnemonic device called an acrostic then it is easy remember all Continents names as the first letter of each word corresponds with the first letter of a continent. These continents…...
The Origin of the Solar System
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1. What produced the iron in the Earths core and the heavier elements like gold and silver in the Earths crust? The production of iron in the earth’s mantle is like the production of iron in extremely massive stars. Shells of nuclear fusion happen in the core of the earth which produces iron, the end product of the fusion. The abundance of iron in the earth’s core is due to the fact that iron has the most stable atomic nucleus…...
Oceanography – An Overview
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This usual refers to marine science or oceanology which usually reveals the study of Earth’s Oceans and Seas. It’s a dynamic topic since it usually corers a wide range of topics such as ecosystem, organisms in marine life, currents, waves and other geophysical fluids dynamics. It also called geology, plate tectonics and fluxes which are as a result of various chemicals which are emitted from oceans. Therefore, oceanography encompasses on a wide knowledge of ocean and its processes. There are…...
Topographical Features at Divergent and Convergent Plate Margins
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Divergent and convergent plate margins are both studied in plate tectonics; which is the study of the plates that makeup the lithosphere, their movements and how these movements has influenced changes in the surface’s topography (Strahler, 2011, 389). The driving force that causes these plate movements is the gradual movement of the semi-molten rock that makes up the asthenosphere (Kious, 1996, 28). Features observed at these margins share some similarities but, also vary quite largely. These differences are caused by…...
Certain Chemicals
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If the process of plate tectonics were to completely stop then the ability of the Earth to create mountains through the collisions of two different plates would stop as well. This would mean that erosion would eventually abrade these mountains and the amount of sediment created by this activity would eventually reach the numerous oceans and seas. The end result would be a rise in sea level that would eventually swallow up the entire land mass of the Earth and…...
A World Without Friction
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Although friction may seem like a minor issue, its absence would chance life as we know it. There would be many negative effects of this like not being able to gain traction on any surface and your ipods earplugs always falling out. Also, there would be many positive effects, such as eliminating the need for coolant in engines and lubricant in machines. Moreover, the absence of friction would be both bad and good. Without friction, many obvious things which we…...
The Ring of Fire
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Most volcanoes are located on the continents edges, along island chains or beneath the sea forming long mountain ranges. More than half of the world's active volcanoes above sea level encircle the Pacific Ocean to form the circum-Pacific "Ring of Fire." The ring of fire makes up seventy five percent of the worlds dormant and active volcanoes. More than half of the world's active volcanoes above sea level are part of the ring. The Ring of Fire is an arc…...
Plate Tectonics
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Ever given that the beginning on time, Human beings believed the ground is solid and immobile. However this is not real whatsoever. The Earth is every-changing and continually in movement. The stability of the Earth is not what we believe it is. Believing about the rotational axis of the Earth, and possibly of what the Earth may end up being at a specific point in time, has a great impact on comprehending all aspects of living things, either in the…...
Plate Tectonics Theory
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‘Evaluate how plate tectonics theory helps our understanding of the distribution of seismic and volcanic events’ In 1912, Alfred Wegener published his theory that a single super continent named Pangaea once existed about 300 million years ago. He proposed that Pangaea then later split into two continents of Laurasia in the north and Gondwanaland in the south and that today’s continents were the result of further splitting of these two land masses. Where the plates split are known as plate…...
How the earth was made
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1. According to the church, the age of the earth was 6,000 years old. 2. James Hutton discovered that the earth was much older from the slanted rocks since he understood these rocks was as soon as laid down horizontally on the sea floor and were buried under fantastic depth to be crystalized. Then they were slanted on end by fantastic earth forces and then deteriorated away. The rocks were then deposited on top. He understood it had to take…...
Dynamic Earth
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Has the Earth been static since the beginning of time? Well, Earth hasn't been moving vigorously but it is changing at a steady rate. New geological features, rock formations, and locations of plates all rise and demolish some in a lifetime and others over a span of millions of years. Earth is dynamic; it constantly progresses and doesn't rest. Through the churns and molds, the twists and turns, Earth is active because of plate tectonics and the rock cycle. The…...
Chapter 4 Plate tectonics
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Chapter 4 plate tectonics Need a Hint? 1.What evidence proved that South America, Africa, India, and Australia were once covered by glaciers? glacial deposits and rock surfaces scarred by glaciers 2. What happens when an oceanic plate converges with a continental plate? The denser oceanic plate slides under the less dense continental plate. 3. A divergent boundary is a boundary between two plates that __________. Move away from each other. 4.Do two colliding continental plates always cause volcanoes? Two colliding…...
Fractional Distillation
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Abstract An equimolar mixture of cyclohexane and toluene was separated by simple and fractional distillation, using an empty column and a copper sponge column respectively. Using helium as the mobile phase, the distillate was analyzed through gas chromatography. The calculated HETP for the simple distillation was 8.274 cm/plate and the 3.332 cm/plate for the fractional distillation. Experimental Procedure A copper packed fractional-distillation column was obtained and an apparatus was assembled for fractional distillation. Four clean, dry fraction collectors were obtained…...
Volcanic and Seismic Events as Proof of Plate Tectonic Theory
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Volcanic and Seismic events are major pieces of evidence towards proving that plate tectonics theory is valid. A seismic event is the transient motion and release of kinetic energy caused by sudden failure of the earth's crust, usually felt as shaking or tremors in the rock mass. Seismic events range in size from barely perceptible tremors to major earthquakes. Volcanic events occur when there is a release of magma, gas and ash from the Earth’s crust. The entire outer surface…...
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The Dynamic Crust, Earthquakes and the Earth’s Interior Why is the Earth’s crust described as being dynamic? Crust- solid rock outer zone of Earth The crust is part of the lithosphere. The Earth’s crust is dynamic which means constantly changing. Earthquakes Volcanoes Crustal movements along fault zones Other evidence indicates that parts of the Earth’s crust have been moving to different locations for billions of years. Describe pieces of evidence that suggest minor changes in the Earth’s crust. Displaced &…...
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FAQ about Plate Tectonics

Explain How Folding Impacts on Landscape Development

...Plate movement is also responsible for the formation of the Himalayan mountains in Asia, the Alps in Europe, the Andes in South America and the Rocky mountains in North America. These fold mountains were formed as the African plate collided with the ...

How the earth was made

...26. The finding of iridium indicates that dinosaurs became extinct from a tremendous hit from a meteor on Earth. 27. The asteroid that hit the planet and caused the mass extinction of the dinosaurs was 100 miles across. 28. Evidence the gives validit...