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Tectonic plates and their movements
Tectonic plates and their movements
Tectonic plates and their movements
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The energy released from earthquakes and forces that move crustal plates are derived from the internal heat engine.
Liquid water can exist on earth because the orbit is at the proper distance from the sun.
The ozone layer is important to life on earth because it shields living things from uv rays.
Constant change and state of flux on earth is caused by slow moving convection currents in the mantle.
The internal heat of earth is a result of heat from radioactive decay of certain elements.
The main cause of over-use of minerals is expanding populations.
Earth is able to hold life because it has sufficient mass to generate gravity to hold gases.
The winds, ocean currents and hydrologic cycle from solar energy and the external heat engine.
Greatest loss of life comes from landslides and mud flows.
Theory of plate tectonics is a revolution because it shows the planet undergoing constant change.
Crust, upper mantle, asthenosphere, mantle, outer core, inner core.
Geology and human understanding -concept of the vastness of geologic time.
Two heat engines of earth- one internal and one external.
Scientific method of solving problems starts with data gathering and arrives with a theory.
The most abundant gas in the original nebula was most likely the lightest known element.
The first internal structure of the inner planets consisted of homogeneous mix of rocks, minerals, elements.
Concept of a large exploding star or nova near the solar nebula is based on evidence that our sun is not large enough to generate the heavy metals in the inner planets.
The evidence of life on this planet occurs in some of the oldest rocks found on earth.
The source of water on earth is from comet debris.
Compaction by the weight overlying layers is least likely to have led to differentiation.
Evidence from the Iron Catastrophe is based on the discovery of the layered structure of Earths interior.
Difference between earth and other earth like planets is distance from the sun and related temp differences.
Importance of Oparin-Miller experiments is that they produced organic compounds from inorganic materials.
“Banded iron formations” because they evidence that oceans, marine algae, and oxygen production were present 3 billion years ago.
Movement of hot material toward the cool surface is not responsible for modification of earths weather.
Most of the mass of earth is mantle.
The carbonaceous meteorite that fell in Australia in 1969 was momentous because contained amino acids and other organic compounds.
The age of earth-4.6 billion, is determined by analyzing meteorites and moon rocks.
The best evidence about the layered structure of earths interior is from reflected and refracted seismic waves.
Jackson. The Miami City Commission changed the name of the hospital to James M. Jackson Memorial in his honor. The hospital had a modern obstetrical delivery room equipped with an anesthesia system and two delivery tables in 1929. The city’s first cancer clinic was taken place at Jackson, which was the only hospital in the area or region to provide radium medical care for cancer patients in 1946. During that same year, a harsh polio epidemic struck Miami, and the hospital acquired five iron lungs to go with its own
in circumference. The outer few miles of lithosphere is made up of rock called crust.
Convection currents occur because the density of a fluid is related to its temperature. Hot rocks lower in the mantle are less dense than the cooler rocks above. The hot rocks rise and the cooler rocks sink because of gravity. Convection currents are thought to be the driving mechanism of plate movement. Convection currents cause convergent and divergent movements. When the rising part of the convection current rises it causes the upper mantle to move upward and in a lateral direction. This causes the mantle to split and new material to rise creating new ocean crust. The downward motion of the convection current pulls the mantle crust downward at convergent boundaries. When part of the mantle crust is uplifted the weight of the lifted part, pushes the sinking mantle down, causing motion in the tectonic plates.
Do police officers really need body cameras is a question that has been repeated all throughout the nation. Body cameras are video recording systems that are used by law enforcement to record their interactions with the public and gather video evidence. Most police departments do not wear body cameras currently and the ones that do are in trial phases to see how it works out. There are many advantages to police officers wearing body cameras but in asking the question should they wear body cameras the stakeholders should look at the complete picture. One reason that police and body cameras have constantly been brought up lately are the instances of police brutality happening within the United States. Police brutality within the United States
Only recently has there been an increased amount of police involvement with citizens all over the media because of the past years fatal police encounters with unarmed black men in New York City, Ferguson, Mo., Baltimore and other parts of the U.S. Most of it has been either feeding the war on cops theory or shedding light to the real injustices dealt by police officers. The reality of the issue is that there 's too many opinions and not enough facts to back up either notion of whether the body cameras work or not due to the fact of how recent the issue is. Time is a large factor in any study dealing with long term effects for what is being researched. There has only been a handful of studies made to combat the real issues present in our society today, but there is not enough time to provide the people today the long term effects of police worn body cameras.(7 Findings from First-ever Study on Body
The earth’s surface and the mantle make up the composition of the tectonic plates. This layer, called the lithosphere, rests on top of the asthenosphere, a layer of molten rock. The asthenosphere is constantly moving and flowing due to the extreme pressures...
Kevin Krajick’s article “Tracking Myth to Geological Reality” was published by American Association for the Advancement of Science in 2005. This article examines how many myths can be linked to geological evidence. Geologists have been investigating how ancient geological phenomenon are able to shed light on the origins of many myths. Scientist have even uncovered evidence that may serve as the inspiration for biblical stories. Many are hoping that understanding these myths and the geological phenomenon they depict will reveal important information about natural disasters like: tsunamis, floods and volcanic eruptions. It is hoped that this information will save human lives in the future. With all of these new discoveries it is important to remember that it is easy to go too far. Myth cannot account for all geological phenomenon and vice versa. It is crucial to make sure that scientific integrity remains the focus when linking myth and geology.
The article by Elida S. Perez discusses the Police Union’s push back on body cameras in El Paso, Texas. Perez states the denial of El Paso Police Department to equip body cameras because they believe other funding priorities and privacy concerns must be addressed. Some of the top funding priorities that Perez states are “hiring more police officers, buying new police cars, and updating radios”(par. 5). In addition, the police union is also concerned over unfair disciplinary actions against the police officers because of any camera malfunctions. She added an example that explained El Paso Municipal Police Officers Association President Ron Martin’s statement, “sometimes emergency situations unfold so quickly that an officer may not have time to turn on the camera, which he fears may be seen as an attempt to hide what occurred” (par.
Solar nebula is a rotating flattened disk of gas and dust in which the outer part of the disk became planets while the center bulge part became the sun. Its inner part is hot, which is heated by a young sun and due to the impact of the gas falling on the disk during its collapse. However, the outer part is cold and far below the freezing point of water. In the solar nebula, the process of condensation occurs after enough cooling of solar nebula and results in the formation into a disk. Condensation is a process of cooling the gas and its molecules stick together to form liquid or solid particles. Therefore, condensation is the change from gas to liquid. In this process, the gas must cool below a critical temperature. Accretion is the process in which the tiny condensed particles from the nebula begin to stick together to form bigger pieces. Solar nebular theory explains the formation of the solar system. In the solar nebula, tiny grains stuck together and created bigger grains that grew into clumps, possibly held together by electrical forces similar to those that make lint stick to your clothes. Subsequent collisions, if not too violent, allowed these smaller particles to grow into objects ranging in size from millimeters to kilometers. These larger objects are called planetesimals. As planetesimals moved within the disk and collide with one another, planets formed. Because astronomers have no direct way to observe how the Solar System formed, they rely heavily on computer simulations to study that remote time. Computer simulations try to solve Newton’s laws of motion for the complex mix of dust and gas that we believe made up the solar nebula. Merging of the planetesimals increased their mass and thus their gravitational attraction. That, in turn, helped them grow even more massive by drawing planetesimals into clumps or rings around the sun. The process of planets building undergoes consumption of most of the planetesimals. Some survived planetesimals form small moons, asteroids, and comets. The leftover Rocky planetesimals that remained between Jupiter and Mars were stirred by Jupiter’s gravitational force. Therefore, these Rocky planetesimals are unable to assemble into a planet. These planetesimals are known as asteroids. Formation of solar system is explained by solar nebular theory. A rotating flat disk with center bulge is the solar nebula. The outer part of the disk becomes planets and the center bulge becomes the sun.
Is your privacy being invaded by America’s police force? Across the nation, numerous police officers are required to wear a compact, portable camera attached to their uniforms. Body- worn cameras were recently introduced to document incidents and encounters between officers and the public. Debates are stirring up around the public if body-cameras are not constitutional and should be eliminated. Many people believe the police body-camera takes away peoples right of privacy and not having the right to decide to be filmed or not. The article written by Jim Walsh effectively reveals the benefits of police body-cameras, by using persuasive logical evidence.
Cloud (1968) calls Banded Iron Formations, rhythmically banded chemical sediments of large, open water bodies that take different aspects but most characteristically consists of alternating layers of iron- rich and iron-poor silica. It is present in some of the oldest volcanic sequences (greenstone belts ca 2800 mya) and is a common sediment type formed until approximately 1800 mya. Although some younger formations with similar structure can be found there is great distinctions between them and the BIF’s of the Precambrian.
Inside Earth there is heat from pressure (push your hands together very hard). and feel the heat). There is heat from friction (rub your hands). together and feel the heat). There is also heat from radioactive decay.
Our solar system, as we see it today, originally formed from the collapse of a very cold and low-density cloud of gas. The mass of this cloud was composed of 98% hydrogen and helium, 1.4% hydrogen compounds, .4% rock, and .2% metal. The nebula was thought to be a few light years across and was roughly spherical in shape. The cloud was in a state of balance, it was neither contracting or expanding, until a cataclysmic event, most likely a supernova, created a shock wave through the nebula, resulting in an area of higher mass. Once this area became more massive than the rest of the nebula it begin to collapse with the area of hig...
The Outer planets existence is unquestionably different in a profuse of aspects including they all have rings, they prevail to be much larger compared to the Inner planets, and they spin much rapidly however endure a longer time to orbit the sun. All the planets, Jupiter, Saturn, Uranus, and Neptune have rings while none of the Inner planets have rings. The size difference of the Inner planets compared to the Outer planets are noticeable. Mercury's' size subsists 2,400 km while the size of Jupiter prevails to be 69,911 km. Outer planets complete a rotation around its axis much faster than the Inner planets. It yields Venus 116 days and 18 hours to complete a day compared to Neptune it only takes 16 hours and 6 minutes. The Outer planets have quite an enormous amount of differences compared to the Inner planets.
The field of geology has many different branches. Some of these areas have hardly anything in common. The one thing that they all include, though, is that each one concentrates on some part of the Earth, its makeup, or that of other planets. Mineralogy, the study of minerals above the Earth and in its crust, is different from Petrology, the st...