Investigating Planet Earth

Investigating Planet Earth

Length: 424 words (1.2 double-spaced pages)

Rating: Excellent

Open Document

Essay Preview

More ↓
Investigating Planet Earth

The Structure of the Earth-


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

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.

How to Cite this Page

MLA Citation:
"Investigating Planet Earth." 19 Feb 2020

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Mars and the Earth Essay

- Mars and the Earth Geologists study the surface of both Mars and Earth by using interplanetary comparative analysis to further their understanding of the two planets. In some ways, Mars resembles Earth. Features on Mars such as an atmosphere, a wind-modified surface, near-surface water, volcanism, seasons, ice caps, dust storms, and channels can be found on Earth as well, albeit slightly different in origination or intensity. Despite their similarities, their differences are profound. Their acute differences in their tectonic framework and their quantities of liquid water affect the geological theories behind the formation of the surface of Earth and Mars....   [tags: Astronomy Space Essays]

Research Papers
3158 words (9 pages)

The Hall Of Planet Earth Essay

- My friend and I went to the AMNH on Saturday and we saw all the exhibits. We went to the Hall of Biodiversity first, and then Gottesman Hall of Planet Earth, the Heilbrunn Cosmic Pathway, Cullman Hall of the Universe, lastly is the Spitzer Hall of Human Origins. It took us three hours to visit all the exhibits. The first thing we saw was a giant clam and on the wall was the name Hall of Biodiversity. There were aquatic animals hanging on the ceiling from sharks to stingrays. I could barely see the aquatic animals because there was not a lot of lighting....   [tags: Earth, Universe, Planet, Human]

Research Papers
1370 words (3.9 pages)

Essay about The History of Earth's Mass Extinctions

- The History of Earth's Mass Extinctions The four billion year history of earth has witnessed five mass extinctions, and some scientists believe that we are on the verge of the sixth.1[1] If we are in the midst of the next mass extinction, we are in the very early stages of an evolving, and escalating process. The most recent, or fifth mass of the extinctions occurred 65 million years ago at the boundary between the Cretaceous and Tertiary periods. Images of an asteroid colliding with the planet, decimating the dinosaur population have been in circulation since the early 80’s.2[2] Being the most recent mass extinction, thousands of scientists around the world have investigated it, and el...   [tags: Anthropology Essays Paleontology Papers]

Research Papers
1621 words (4.6 pages)

Investigating the Cause of Global Warming Essay

- Investigating the Cause of Global Warming Many people disagree on the issue concerning global warming. Some believe that human activities, various forms of polluting, are the main cause of global warming. Others think that not only have humans not affected the planet by any significant amount, but that not much global warming has even occurred. Many scientists think that pollution is the cause of global warming and the greenhouse effect. There is a lot of evidence to support this theory. In the United States alone, almost 15,000 pounds of greenhouse gases are emitted per person each year....   [tags: Global Warming Climate Change]

Research Papers
867 words (2.5 pages)

Investigating the Existence of Global Warming Essay

- Investigating the Existence of Global Warming Evidence For: Evidence Against: · Methane Increasing Levels of atmospheric methane, a powerful greenhouse gas, have risen 145% in the last 100 years. Methane is derived from sources such as rice paddies, bovine flatulence, bacteria in bogs and fossil fuel production. · Peculiar Weather Recently, young people in Vietnam noticed strange white stuff covering the fields. They had never seen snow before. It is the coldest spell in the country for 20 years....   [tags: Climate Change, Greenhouse Gases]

Research Papers
588 words (1.7 pages)

Earth Is The Planet From The Sun And The Densest Planet Essay

- Earth is the third planet from the sun and the densest planet in our Milky Way Galaxie. Earth has a radius of 3,959 miles and the age of 4.54 billion years. The distance from the earth to the sun has shown to be approximately 92,960,000 miles. The Earth is divided into several layers which have a variety of chemical and seismic properties (depths in km): 0-40 Crust 40-400 Upper mantle 400-650 Transition region 650-2700 Lower mantle 2700-2890 D" layer 2890-5150 Outer core 5150-6378 Inner Core The crust varies in thickness throughout earth....   [tags: Earth, Solar System, Sun, Planet]

Research Papers
899 words (2.6 pages)

Is Building A Super Telescope Desert? Essay

- Every year the governments across the world that can afford to spare change for the space program often do so by sparing more than just change. They spare billions of dollars towards projects and missions that explore the universe in search of intelligent life or any life that can be found. Every single enterprise that considers exploring for life in the universe takes scrupulous amounts of time to plan has a large price tag. The extensive efforts that is required to execute one of these projects does not seem to deter the scientific community involved in finding out more about the universe and if life exists out there....   [tags: Planet, Solar System, Venus, Atmosphere]

Research Papers
1261 words (3.6 pages)

The Planet Of Planet Earth Essay

- There are eight planets in our solar system. The first planet closest to the sun is Mercury. Therefore, Mercury is the hottest planet. Mercury’s surface is cold. However, in the daytime Mercury can get as hot as 840 degrees fahrenheit, which is 450 degrees celsius. During night time the temperature can decrease to 275 degrees fahrenheit, or -170 degrees celsius. Mercury is the smallest planet. Mercury is the quickest planet to move around the sun. Its speed is approximately 112,000 mph along its elliptical orbit....   [tags: Planet, Solar System, Jupiter, Mars]

Research Papers
728 words (2.1 pages)

The Planet Of The Earth Essay

- The universe is a vast, mysterious place filled with an estimated one hundred billion galaxies, within each galaxy, there are one hundred billion stars, and an estimated 〖10〗^24 planets. The Milky Way galaxy contains eight planets, one of them is the complex Earth. Earth is a rich planet containing things such as icy mountain peaks, steep canyons, lava, and towering waterfalls. All these things are what make it possible for our planet to sustain all of its beautiful life from the numerous plant and animal species....   [tags: Plate tectonics, Volcano, Earth]

Research Papers
1614 words (4.6 pages)

The Effects Of Human On The Planet Earth Essay

- The Effects of Human on the Planet Earth Our world has seen a significant increase in the weather climate and there has been considerable amount of changes to the earth’s geological form. Many scientists have come to the conclusion that the earth is experiencing global warming and although we may try to avoid it, it is happening as we speak and if we don’t do something about it, we may end up having a high increase in carbon dioxide levels. Many different researchers and writers have touched base on the topic, but these three articles really stood out and made an impact....   [tags: Global warming, Earth, Hurricane Katrina]

Research Papers
859 words (2.5 pages)

3km deep, and nobody has ever been
able to drill down further than 15km. Everything that exists below
this is worked out by scientists using evidence from earthquakes,
volcanoes and meteorites. Being relatively cold, the crust is rocky
and brittle, so it can fracture during earthquakes. The crust is not a
continuous layer of rocks but consists of large masses, called plates,
which are free to drift slowly across the surface of the planet. There
are two types of crust - Continental and Oceanic. Continental crust is
less dense, much older and much thicker than Oceanic crust.
Continental crust floats on the mantle rather like an iceberg floats
in water.

There is a balance that exists between the level of the crust and the
mantle. If the crust builds up in one area, it will push down on the
mantle with more force causing some of the material to move away...
this results in another area of the crust being pushed up by the
material from that mantle that has been moved away If material is
moved off the crust, the mantle pushes up harder causing that area of
land to rise and another area (where the material of the mantle came
from) to sink. This process goes on constantly and always maintains a
balance of downward forces from the crust with the upward forces from
the mantle.
Return to