3. The English word jungle comes from an Indian word for the tangled undergrowth in the tropical forests that once covered most of southern India…
Plate tectonic theory is a widely excepted theory that the Earth’s lithosphere is made up of plates, both oceanic and continental, which slowly move due to convection currents in the mantle and the asthenosphere. However, it is very hard to be certain as we can’t see the structure of the Earth, so some people do not agree with it. This theory saw the introduction of what we know today to be tectonic plates. Tectonic plates occur where there is radioactive decay in the core and temperatures are extremely high. This decay can occur anywhere in the earth’s core. This results in a plume of magma rising through the mantle creating a thermal current. When this current reaches the surface it spreads through the asthenosphere, before cooling and sinking. These are the convection currents which move tectonic plates. Convection currents will only occur in liquid form and in warm conditions. Tectonic plate theory has evidence to prove that these currents do take place. We know that the mantle is liquid and has high temperatures as magma that originates in the mantle is molten. This means that convection currents can occur. This part of plate tectonic theory is supported by global seismic activity because if convection current did not exist and plates were not able to move, earthquakes would not occur at any plate boundaries, but particularly at collision plate boundaries as there would be no plate movement.…
The theory of plate tectonics states that the Earth’s lithosphere (top layer of the Earth’s crust) is split up into rigid sections called plates that are moving relative to one another as they move on top of the underlying semi-molten mantle. These plates are either continental, The North American Plate, or oceanic, The Nazca Plate.…
The lithosphere is basically the strong outer shell of earth. It is roughly 100km thick depending on its age, and is broken into plates, known as the tectonic plates. Within the lithosphere is the crust as a portion of the upper mantle.…
As a result, the mantle becomes less dense and will gradually rise closer to the lithosphere. The cooler, denser mantle then begins to subduct back down closer to the mantle thus replacing the rising, less dense mantle. This process of events creates a convection cycle throughout the mantle. This rotating movement causes the lithospheric plates to move.…
PLATE TECHTONIC THEORY:The lithosphere that is broken into plates move on earth’s surface relative to one another. Zones of volcanic, E.quake mark most plate boundaries.…
9. What was the primary agent by which European language and culture was transmitted to Brazil and Spanish America? P.435…
The Geosphere is made up of mostly rock. Beneath the surface of Earth, forces inside are a crucial source for the basic materials that nurture life. Volcanoes and earthquakes are examples of reactions to disturbances that initially took place under the Earth’s surface. Although destructive, the natural forces behind these events also provide the materials we and other living organisms need to survive. Through satellites we can see that the Earth’s crust is constantly moving.…
In A Short Account of the Destruction of the Indies, Bartolome De Las Casas writes to the King of Spain about the treatment of indigenous peoples by the Spanish conquistadors. Being a Spanish Dominican priest, he was appalled by how Christians were treating these people. He writes, “The Christians seized all the maize the locals had grown for themselves and their own families and, as a consequence, some twenty or thirty thousand natives died of hunger, some mothers even killing their own children and eating them” (Las Casas, 1992, p. 39). Las Casas has great compassion for the indigenous people, but still refers to them as sheep throughout the book. There is a sense of innocence about them.…
Tectonic processes have been responsible for the major landforms across the Earth’s surface. These processes are controlled by the convection currents rising from the Earth’s mantle.…
Most naturally occurring earthquakes are related to the tectonic nature of the Earth. Such earthquakes are called tectonic earthquakes. The Earth's lithosphere is a patchwork of plates in slow but constant motion caused by the release to space of the heat in the Earth's mantle and core. The heat causes the rock in the Earth to flow on geological timescales, so that the plates move slowly but surely. Plate boundaries lock as the plates move past each other, creating frictional stress. When the frictional stress…
Earthquakes develop in the crust of the earth. The inner parts contains a lot of energy. Some of this energy can escape through cracks which can cause volcanic activity, but most of it is stored within the earth’s inner part, contained in the crust.The earth’s outer crust has rough edges and lines making it look a bit like a jigsaw puzzle.The energy stored here causes the pieces to slide, glide, knock and move around each piece. These pieces are also known as tectonic plates.…
* As water evaporates, water from the bottom comes up. Nutrients and calcium gets drawn to the surface. That process creates a poisonous layer…
If you look at a map of the world, you may notice that some of the…
Our home is our natural connection to the Earth. However, our modern lifestyle often disconnects us from Earth’s natural elements. Many of us live in a world made of concrete—buildings, paved roads, parking lots and sidewalks—with minimal exposure to simple plants, flowers and trees. We rarely get to experience nature on a large scale- Earth’s beautiful, cascading mountains, vast forests or powerful waterways. Adding to our dilemma is the high level of pollution and chemicals we are exposed to on a daily basis. We cannot escape the magnetic pull that the Earth’s energy has on us- but we are living in a world that is sadly out of balance with nature! And these imbalances can contribute to both physical and emotional illness. Fortunately, it is possible to reestablish our connection with Earth by creating an environment that brings in all the elements of nature—plants, natural fibers, materials and lighting—as well as crystals and gemstones. Combined with feng shui design, blessings, space clearings and other modalities, we can recreate that harmonious balance in our work and living spaces.…