Earth in Danger Nobody can negate that a lot of phenomena has been changed in our world recently while wondering the reason of these changes. One of the main reason for a lot of change in our life is the rapped raise on temperature which is called global warming. Global warming is the rise in the average temperature of Earth’s atmosphere and oceans since the late 19th century and its projected continuation. Since the early 20th century‚ Earth’s mean surface temperature has increased by about 0.8
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Earth’s Rotation Earth ’s rotation is the rotation of the solid Earth around its own axis. The Earth rotates from the west towards the east. As viewed from the North Star or polestar Polaris‚ the Earth turns counter-clockwise. The North Pole‚ also known as the Geographic North Pole or Terrestrial North Pole‚ is the point in the Northern Hemisphere where the Earth ’s axis of rotation meets its surface. This point is distinct from the Earth ’s North Magnetic Pole. The South Pole is the other point
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1. Summarize advances over time in determining the age of the Earth‚ including the importance of the discovery or radioactivity. Herodotus counted layers of earth near the Nile River in 450 B.C.E. The Bible was used in the Middle Ages to compute the age of the Earth. The 18th and 19th centuries brought a more scientific look into determining the age of the Earth by studying the salinities of the oceans‚ the rates of sedimentation‚ and models of cooling of different materials in order to calculate
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Everything Happens For a Reason Both The Odyssey by Homer and Oedipus Rex by Sophocles‚ were based in the context of ancient Greek culture but each was written during different time periods. The Gods played an enormously influential role in the lives of the Ancient Greeks. The Odyssey was written during the Greek Heroic Age (1500-1100 B.C.E.) and Oedipus Rex was estimated to be written around the 430s B.C.E. during the Age of Pericles when Athens was at its height of political and cultural power
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Evolution of the Earth The planet earth has gone through much abuse and punishment in the past. Formed approximately 4.5 billion years ago‚ the earth has undergone multiple catastrophic asteroids erasing species after species. Due to geologic evidence‚ it is estimated over 90 percent of all life that had ever lived in this planet have been extinct. No more than the past 500 million years alone‚ 50-90 percent of all organisms on earth were wiped out of the geological timeline without any warning
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Material: Realms of the Earth Astro-physicists and scientists believe that there could be quite a few planets in the Universe similar to our planet Earth. There is also a probable chance that some form of life prevails and sustains in one of such planet. However‚ so far as we presently know‚ the Earth is the only planet which supports life which makes it a very unique planet. It is therefore imperative (very important and necessary) for us to understand the spheres of the Earth as the spheres play a
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1. What are the six regions of the Sun? The Sun’s regions are the core‚ the radiative zone‚ the convective zone‚ the visible surface‚ the chromospheres‚ and the corona. The core‚ radiative zone‚ and convective zone make up the interior of the Sun. The visible surface‚ chromosphere‚ and corona make up the exterior of the Sun. 2. What is nuclear fusion? What role does nuclear fusion play in the Sun? Nuclear fusion happens when two atomic nuclei combine to form one heavier nucleus. Since the majority
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Atmosphere Homework Describe the composition of the air Air is a mixture of gases and aerosols that compose the atmosphere surrounding Earth. The primary gases of air include nitrogen (78%) and oxygen (21%). Trace gases and aerosols make up the remaining 1% of air. The trace gases include the noble gases argon‚ neon‚ helium‚ krypton and xenon‚ hydrogen and the greenhouse gases. The aerosols are solid or liquid particles having diameters in the region of 0.001 to 10 microns‚ and include dust
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ENGLISH CLASS 2013 PLANET EARTH OUR PLANET TEACHER ERICKA SANTIESTEBAN COLEGIO LA ROCA Earth is the third planet from the Sun‚ and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System’s four terrestrial planets. It is sometimes referred to as the world‚ the Blue Planet‚ or by its Latin name‚ Terra. Earth formed approximately 4.54 billion years ago‚ and life appeared on its surface within one billion years. Earth’s biosphere then
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Tiny fraction of 1 atomic mass unit‚ -1 electrical charge Valence Bonds: Interact with other atoms to form chemical bonds Atom & Ions: an Ion is an atom in which the total number of electrons is NOT equal to the total number of proton which would give it a net positive or negative charge. An ion is produced when an atom gains or loses one or more electrons and becomes either positively charged (if electrons are lost)‚ or negatively charged (if electrons are gained)\ Ionic Bond: the attraction
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