a. The crust and the mantle are divided into the following layers in order of increasing depth:…
17. List the Earth’s layers, their composition, and their approximate depth from the surface. How do we gain a better understanding of how Plate Tectonics works by studying the differing mechanical strengths of each layer?…
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.…
2) These plates are presently moving around on Earth’s surface and interacting with one another…
3. Examine the luster of the minerals in Figure 1.2 (p. 4 lab book). Place the letter A, B, C, D, or E in the space provided that corresponds to the luster exhibited. Letters may be used more than once. A. Metallic luster, B. Nonmetallic luster – glassy, C. Nonmetallic luster – dull, D. Nonmetallic luster – silky, E. Nonmetallic luster – greasy.…
3. Atmospheric Composition & Structure. Draw a diagram labeling the five atmospheric layers discussed in class as well as the ozone layer. On your diagram, list the significance of each layer.…
1) Overall, the physical properties of minerals provide a reliable means to identify common minerals. However, certain properties can exhibit a range of characteristics or values making them less useful for identification purposes. Choose three physical properties that might vary considerably between samples of the same mineral and explain why such variability might exist.…
The core is divided into three major compositional layers. The crust on Earth’s surface, the rocky mantle beneath the crust and the metallic core which is the center of the Earth. While distinct and separate parts of Earth, they are all interconnected.…
The Crust is the first and upper most layer of the Earth. There is Continental Crust which sits on top of Oceanic Crust. This layer is made frequently from granite rocks and is solid. Continental Crust is approximately 32km. Below the Continental Crust is Oceanic Crust. It is about 8km. This part of the Crust is made from basalt rocks. The Crust is most of lithosphere and is the coolest layer by far.…
Core: At the centre is the densest of the three layers, the core. The core is a spherical mass, composed largely on metallic iron, with lesser amount of nickel and other elements.…
2.To which layer of the earth can you compare the skin of the boiled egg?…
<center><b>What is the evidence for our knowledge of the internal structure of the Earth?</b></center><br><br>As we enter the twenty first century we are beginning to learn more and more about the composition of the Earth. Early predictions have thrown up some rather strange and peculiar thoughts as to what is making up our Earth, but now day¡¦s scientists can be confident that the Earth is made up of what they think. As from experiments and other sources of information a picture to what is really down there is becoming much clearer.<br><br>So how do these scientists know that the Earth¡¦s sections are made up of different compositions, and how do we know that the physical state of each layer is what it is?<br><br>The outmost layer of the Earth is the crust, this is what we stand on and covers the earth entirely. It is made up of many different rocks and minerals, we know that the composition of the Earth¡¦s crust is generally the same due to the mines and boreholes that humans have made down into it. Mines that have been dug go down and still bring up valuable minerals that can be found just as close to the Earth¡¦s surface. The deepest goes down around 3km into the earth, and the temperature is 70¢XC, the only way for miners to work is because of the air conditioning, and still the type of rock looks the same all around. Also boreholes that have been drilled as far as half way into the Earth¡¦s crust bring up rocks that look very similar to the ones on the surface. So scientists can safely say that the Earth has a crust which is very similar in composition all the way down until the mantle is reached.<br><br>When earthquakes happen they produce two types of waves P-waves and S-waves. Primary waves (p-waves) are the fastest waves, they travel away from a seismic event. Primary waves are longitudinal, they can travel through solids, liquids and gases. The secondary waves (s-waves) travel slower than the primary waves, and are traverse waves. This type of wave can…
a. The major sections of the earth based on chemical composition are the crust, mantle and the core.…
The Earth's layered structure. (1) inner core; (2) outer core; (3) lower mantle; (4) upper mantle; (5) lithosphere; (6) crus.…
1 forces produce mountains? Why is our daily weather so variable? Is climate really changing? How…