Science‚ Medicine & Technology – Lecture 2 14th September‚ 2012 Global Warming – Paul Waithe * Differences between climate change & global warming: Global warming is the overall increase in the earth’s temperature. Climate change may be in either direction. For instance; more hurricanes‚ more wind etc. Comprehensive way at looking at weather patterns. * Climate change over the past century is directly linked to global warming. * Global warming could result in the world
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Today we will only talk about red dwarfs‚ neutron stars‚ and supergiant stars since they are like the small‚ medium‚ and large of the stars. Red dwarfs are among the smallest stars‚ and even our own sun is a red dwarf. When they die‚ these stars will turn into white dwarfs which is the dead core of the star. This core is only exposed once it has swelled to the point where the outer layers dissipate‚ leaving behind the core. Neutron stars are like the goldilocks of stars‚ they’re just in
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Radioactive dating Isotope: Carbon-14 |Name |radiocarbon‚14C | |Neutrons |8 | |Protons |6 | |mass
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Atomic masses: Proton 1.672621777(74) × 10^-27 kg 1.007276466812(90) amu Neutron 1.674927351(74) × 10^−27 kg 1.00866491600(43) amu Electron 9.10938291(40) × 10^−31 kg 5.4857990946(22) × 10^−4 amu What is an Isotope? -An Isotope is an Atom with the same number of protons‚ but differing numbers of neutrons. Isotopes are different forms of a Single element. Elements and their uses to our human body Oxygen is the third most abundant element found in the sun‚ and it plays
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Compounds 2.1 Define matter‚ an element‚ a compound‚ and a trace element. 2.2 Explain how and why iodine‚ fluoride‚ and iron are added to the human diet. 2.3 Distinguish between the size‚ location‚ and properties of protons‚ electrons‚ and neutrons. 2.3 Define the atomic number and mass number of an atom. 2.3 Define an isotope and explain what makes some isotopes radioactive. 2.4 Describe the uses and dangers of radioactive isotopes. Chemical Bonds 2.5 Explain how the electron configuration
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BIO 101 – HUMAN BIOLOGY Midterm Exam I – Fall 2007 Please fill in your name and (SOLAR) ID number on your answer sheet before starting. Do not write anything under the column marked birthdate!!!!! Keep the opscan sheet that came with your test and do not use ANY other opscan form or you risk a misgrading. Answers to the multiple choice questions must be filled in on the answer sheet with a #2 pencil. There are 40 multiple choice questions. Answer sheets will be collected when time is called at 8:10
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I have learned from this project is that everyone is original and vary from each other. This was a fun project‚ I got to display who I am and present the things that really mean the most to me‚ and why they are important. Each time I presented to a new person‚ I tried to enthrall them with my own originality. People read my symbols in the way I expected them too because‚ there were very little questions‚ some did have an egregious look on their face when I said I like to dance. If I could do this
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Study Guide – 1) What are the parts of an atom? Where are the subatomic particles found? a) Protons‚ neutrons‚ and electrons b) Protons and neutrons are located in the center of an atom in the nucleus and the electrons are located around the nucleus. 2) How does the Atomic Mass # differ from the Atomic #? The atomic mass number is the sum of the number of protons and neutrons in the nucleus of an element and the atomic number is the number of protons that it has. 3) What is an
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Form A Chemistry 100 Introduction to General Chemistry Fall Semester‚ 2010 Exam One‚ 150 points On this page print your name‚ your lab section number‚ and the name of your TA. Also sign this test booklet. Name________________________________Lab section____________TA___________ Signature________________________________________________________________ The exam consists of 21 problems and one extra credit problem. Partial credit is given only for work that is legible and logically and clearly
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calibrated in weight units? problem 3 If a nucleus captures a stray neutron‚ it must bring the neutron to a stop within the diameter of the nucleus by means of the strong force. That force‚ which "glues" the nucleus together‚ is essentially zero outside the nucleus. Suppose that a stray neutron with an initial speed of 1.4 X 107 m/s is just barely captured by a nucleus with diameter d = 1.0 X 10-14 m. Assuming that the force on the neutron is constant‚ find the magnitude of that force. The neutron’s mass
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