Will Perry Definitions: CoronaTop layer of the sun atmosphere that extends from the top of the chromosphere and ranges in temperature from 1 million to 2 million K. Tidal EffectsTides are the rise and fall of sea levels caused by the combined effects of gravitational forces exerted by the Moon‚ Sun‚ and rotation of the Earth. Some shorelines experience two nearly equal high and low tides each day‚ called a semidiurnal tide. Marias a dark region of considerable extent on the surface of the moon
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The nearest star to Earth is the Sun‚ which is the source of most of the energy on the planet. Solar System The Solar System consists of the Sun and its planetary system of eight planets‚ their moons‚ and other non-stellar objects. It formed 4.6 billion years ago from the gravitational collapse of a giant molecular cloud. The vast majority of the system’s mass is in the Sun‚ with most of the remaining mass contained in Jupiter. The four smaller inner planets‚ Mercury‚ Venus‚ Earth and Mars‚ also
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Atomic Theorist Niels Bohr Niels Bohr was born on October 7‚ 1885 in Copenhagen‚ Denmark. His father was Christian Bohr‚ a prominent physiologist and a professor at Copenhagen University. His mother was Ellen Adler Bohr‚ the daughter of a wealthy Jewish banker. As Bohr grew up‚ he was surrounded with his fathers work. This ignited his interest in physics from a young age. Bohr enrolled in Copenhagen University in 1903 to study physics. He received his masters in 1909 and then a doctors degree in
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Short Notes On Atomic Structure * Atom is the smallest particle of an element- All 117 elements has atoms * Bohr model: - Planetary model (see Figure 1 below) 1. Sun (proton & neutron= nucleus) 2. Planets (electrons) 3. Orbit (shell) Figure 1: Bohr model * Each type of atoms has a certain number of electrons and protons that differentiate it from the atoms of other elements Example: 1 proton 1 electron= Hydrogen (1 type elements) 2
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“Solar Radiation and its Effects on Planet Earth” The Sun emits a tremendous amount of energy‚ in the form of electromagnetic radiation‚ into space. If we could somehow build a gigantic ball around the Sun that completely enclosed it‚ and lined that ball with perfectly efficient photovoltaic solar panels‚ we could capture all of that energy and convert it to electricity and be set in terms of Earth ’s energy needs for a very long time. Lacking such a fanciful sphere‚ most of the Sun ’s energy
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Six scientists were chosen to see which one had made the greatest contribution to our current understanding of the atom’s structure. Our knowledge of an atom’s appearance and structure have evolved from years and years of development and contribution from many different scientists. Scientist Ernest Rutherford had been the best contributor to the understanding of the atomic structure. Why Rutherford was chosen is because his work had information on protons‚ neutrons‚ and electrons‚ the main components
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Mr. Lawson 12/14/12 Neils Bohr Niels Henrik David Bohr was born in Copenhagen on October 7‚ 1885‚ as the son of Christian Bohr‚ Professor of Physiology at Copenhagen University‚ and his wife Ellen‚ née Adler. Niels‚ together with his younger brother Harald (the future Professor in Mathematics)‚ grew up in an atmosphere most favourable to the development of his genius - his father was an eminent physiologist and was largely
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)h where h = h/2π ∴ L for p electron = √1 ( 1 + 1 )h = √2h ∴ (A) Problem: For which of the following species‚ Bohr theory doesn’t apply (A) H (B) He+ (C) Li2+ (D) Na+ Solution: Bohr theory is not applicable to multi electron species ∴ (D) Problem: If the radius of 2nd Bohr orbit of hydrogen atom is r2. The radius of third Bohr orbit will be (A) 4/9r2 (B) 4r2 (C) 9/4r2
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Planets and moons in our solar system share many similar properties‚ but there are also many ways they are different. Some of the main differences come with the different geologic activity‚ composition‚ interior structure‚ magnetic field‚ and atmosphere that distinguish some planets and moons from others. The first way to separate the planets as far as their surfaces is breaking them into their two categories. The Jovian planets (Jupiter‚ Saturn‚ Uranus‚ Neptune) are primarily composed of gas and
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Chemistry Atomic Structure: The Electron A myriad of trends occur on the periodic table‚ whether it is defined through the size of the atoms or the first ionization energy that may occur‚ many other trends can be found simply looking horizontally or vertically on to the table. As you look from left to right you can see that the reactivity of the elements increase‚ this is due to the number of electrons increasing on the shell. This also once you go down the table; the shells become further and
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