Investigating Planet Earth
The Structure of the Earth-
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The Crust:
This region is thin compared to the other layers in the Earth. It
varies in thickness from 10km deep to 65km deep. The crust is made up
of lighter rocks that "float" on top of the mantle. This layer
includes the continents as well as the rock under the oceans. The
thickness of the crust might be a little deceiving... to put it into
perspective, we have built many deep mines but NONE have yet reached
the mantle!
The Mantle:
This region lies under the crust and is approximately 2900km thick.
The mantle is much denser than the crust (which is why the crust
floats on top) and has a texture much like tar. The rock in this
region is rich in compounds made from iron, magnesium, and silicon,
which accounts for why it is denser than the crust.
The Core:
This region is divided into two parts. The outer part is called the
Outer Core. It is about 2100km thick and made of liquid nickel and
iron. The inner part is called the Inner Core and it is the real
centre of the Earth. This part is about 2800km in diameter and is made
of solid iron and nickel.
Plate tectonics
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Plate tectonics are a reasonably new theory that has revolutionized
the way geologists thinks about the Earth. According to the theory,
the surface of the Earth is broken into large plates. The size and
position of these plates change over time. The edges of these plates,
where they move against each other, this causes earthquakes,
volcanoes, and mountain building. Plate tectonics is a combination of
two earlier ideas, continental drift and sea-floor spreading.
The Earth is made up of several of these different layers. The outer
layer is called the Crust. It is made of the lighter, less dense,
rocks that floated to the surface when the Earth was formed. The
deepest mine in the world is only 3.
The Mantle makes up 70% of the Earth’s mass and is mostly solid but capable of flow, causing changes in the Earth’s surface.
Earthquakes are a natural part of the Earth’s evolution. Scientific evidence leads many geologists to believe that all of the land on Earth was at one point in time connected. Because of plate tectonic movements or earthquakes, continental drift occurred separating the one massive piece of land in to the seven major continents today. Further evidence supports this theory, starting with the Mid-Atlantic ridge, a large mass of plate tectonics, which are increasing the size of the Atlantic Ocean while shrinking the Pacific. Some scientists believe that the major plate moveme...
This story is basic about what the different between Earth and Eyeth. This story basic how deaf had this own world.You earth has red, yellow green and blue. Explain how the earth looks like have everything one included the stars, the sun, and aminals bird flying around the earth. There this building is the while and long hallway. Communicate center and the people preparation to go there.There we many people work there, different people with responsible. They knew about the thirteen planets knew was top secret. They want to know what was going on that thirteen planets, was make lot noise there. They want to know if the live person on that plant so they agree to have met and get permission first before they could send someone there. They were
in circumference. The outer few miles of lithosphere is made up of rock called crust.
The expedition, named after its supply ship, was a private venture, financed by public contributions augmented by a government grant. It had further backing from the Admiralty, which released experienced seamen to the expedition, and from the Royal Geographical Society. The expedition's team of scientists carried out a comprehensive scientific programme, while other parties explored Victoria Land and the Western Mountains. An attempted landing and exploration of King Edward VII Land was unsuccessful. A journey to Cape Crozier in June and July 1911 was the first extended sledging journey in the depths of the Antarctic winter. The Terra Nova Expedition, officially the British Antarctic Expedition, was an expedition to Antarctica which took place
“Earth First! is a verb, not a noun.” (Earth First! Journal.org/Direct Action). Founded in 1979, the Earth First! movement began in response to the increasingly corporate environmental community. The founders believed environmental activists were selling out rather than working to protect the environment. Frustrated by the direction of the environmental movement, they decided it was time to take aggressive action to defend Mother Earth. Their slogan became “No Compromise in the Defense of Mother Earth!” Supporters are composed of small groups that take it upon themselves to become familiar with the ecology of the area and the most immediate and serious threats to it by using litigation, education and civil disobedience (Earth First! Journal.org/About Earth First!). There is a broad diversity of groups ranging from forest defenders, fracking, wetlands activism, animal rights and agricultural activism but all agree on the need to take action. With views tied to deep ecology, supporters believe that all living organisms are valuable and that all forms of life are vitally connected. The life of the earth comes first and these beliefs are put into action by drawing public attention to the crises facing the natural world and succeeding in cases where other environmental groups have given up. Earth Firsters also believe the current technological system is unethical because it permits humans to prosper while other species become extinct. To save all species, humans must give up their technological luxuries ("If a Tree Falls in the Forest, They Hear It". New York Times News Archives, 04 November 1990. http://www.nytimes.com/1990/11/04/magazine/if-a-tree-falls-in-the-forest-they-hear-it.html?pagewanted=all&src=pm). New ideas, strategies an...
Homework is a quintessential part of a student’s expectation of school. Homework can vary in length, task, and difficulty level. A student’s motivation to complete homework can be purely self driven, but parents and teachers can also contribute t a student’s desire to complete their assignment. (Van Voorhis, 2011, p. 220). Project based homework, such as The Curiosity Project, can help students stay motivated with homework completion by having clearly defined roles for students, parents, and teachers. This can help create a strong home school connection and avoid the typical stress that comes with homework.
The idea of independence and autonomy had played a great role in destroying family connections across generations. Immigrant families have been coming to the United States for decades now. The connections across the family members in generations are not as they used to be because of the concept of independence and autonomy. This idea has damaged family connections by causing a huge gap among generations. In the article “Unaccustomed Earth” the author Jhumpa Lahiri presents an immigrant family that struggled in maintaining its connections from being lost by the problems caused by the idea of independence and autonomy. Lahiri states that after the death of Ruma’s mother, Ruma’s relationship with her father took its worst form because of the communications
Magnetic Field: The Earth has a superior magnetic field due to a core consisting of iron and nickel. Currently the rotation of the Earth and its Coriolis effect help to create this pull of the tides from the oceans. The northern lights or lurora Borealis can be seen at various times in a mystifying view of beauty.
What are planets? Planets are kinda like asteroid around the sun. There are nine planets in the solar system, Mercury, Venus, Earth ( Our planet ), Mars, Jupiter, Saturn,Uranus, Neptune, and Pluto.
"A planet is a celestial body that revolves around a central star and does not shine by its own light " (Grolier, 1992). The only planetary system that is known to man is our
The interior structure of the earth is made up of crust, the mantle and core (inner core and outer core). Earthquakes occur on the crust. Crust forms the external layer of the earth surface. On the crust, the plate tectonics forces are in charge of causing the abrupt earth movements. Due to the existence of an immense temperature and concurrent pressure difference in the outer layer and inner layer of the earth, convection currents occur at the mantle. This energy results from overwhelming decomposition of radioactive substances contained by the rocks found at the interior of the earth. The developed convection currents lead to movement of lava; cold lava finds its way to the interior of the earth crust, while the molten lava which is generally hot, leaves the interior of the earth to the outside of the earth crust. These kinds of circulations occur at different locations of the earth surface and consequently results in segmentation of the earth due to movement in different directions.
Venus, the second planet closest to the Sun and Earth’s closest neighbor, is known for its many wonders and harsh conditions. Venus is possibly the first planet discovered by humans and is said to have been first discovered in 17 B.C. by Babylonian astronomers. Venus is the first planet to be explored by spacecraft although many of these attempts have proven unsuccessful. Fortunately, more than twenty of the spacecraft explorations been proven successful, and through those we have gained knowledge about this wonder of the night sky.
One thing us as humans have never been able to fully understand is astronomy. Always having an unexplained mystery, astronomy also has served as a way to keep time and predict the future. The word “astronomy” is defined as the study of heavenly bodies, meaning anything in the sky such as stars, galaxies, comets, planets, nebulae, and so on. Many people, if not everyone, is amazed by the night sky on a clear, moonless night.
Our planet, the Earth, is the third planet from the Sun, and usually is known as the Blue Planet. Its location in the Solar System and the particular characteristic of being the only planet with abundant water, have made possible the development of life here. Thousands of millions of years ago, the first living organisms evolved from a non-living matter, and since then the Earth has been inhabited by many different species. Those, who have dedicated their research to study and classify living organisms, best known as taxonomists, have divided them into categories, taking as a definition pattern the principal features of each species. In this manner, the living organisms can be classified into five Kingdoms: Animal, Plants, Fungi, Bacteria,