Tyler Junior College Physics 1405 Elementary Physics

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Tyler Junior College Physics 1405 Elementary Physics Section Cero SCIENTIFIC LITERACY

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Important Concepts Measurements & Units Your Need for Scientific Literacy Science & Pseudoscience Scientific Reasoning A Brief History of Western Science

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PHYSICS

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Physics . . . is the investigation of nature in the broadest sense. is the exploration of straightforward things. considers matter, vitality, & the major powers of nature. manages depictions of the physical universe can be partitioned into numerous fields: mechanics, electromagnetics, nuclear, atomic, astronomy, quantum, molecule, geo, and so forth

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MEASUREMENTS

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What You Need To Bring Pencils Three 882-E Scantrons 1 pkg 815-E Scantrons Scientific Calculator Centimeter ruler Protractor Pickup your clicker & return at end of class

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Measuring Stuff Measurements are a sign of good science. The amount you think about something is frequently identified with how well you can quantify it. On the off chance that we can't measure it, arrange, or somehow order it, then an esteem can't be put on it.

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Measurements incorporate a number and a unit . Ex: 2 cm, 14 weeks, 10 gallons. Estimations require a settled upon standard to be characterized. Ex: meter, yard, day, gallon, kilogram, degree

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Unit Conversion of units is a vital piece of working with physical amounts. Change over 27 inches to meters Convert 70 mi/hr to ft/s Convert 1 yd 3 to m 3

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Fundamental Quantities Fundamental amounts: Ex: mass, length, time, charge, iridescence Non-basic amounts: Ex: territory, volume, constrain, thickness, speeding up How to differentiate: the units of non-basic amounts are made out of units of crucial amounts

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Units Are Often Mixed Density = mass/volume Units of thickness in mks: kg/m 3 Velocity = separate/time Units of speed in cgs: cm/s

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International System of Units (SI) mks – meter, kilogram, second cgs – centimeter, gram, second Prefixes: deci = 1/10 = 10 - 1 centi = 1/100 = 10 - 2 (cm) milli = 1/1000 = 10 - 3 (mm) small scale = 1/1000000 = 10 - 6 ( m) Many, numerous others in content (Know These)

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Reading Your Text: Measuring Stuff Notice the movement of thought Eratosthenes measures Earth's breadth Aristarchus measures Moon's width Measurement of Earth-Moon remove Measurement of Earth-Sun separate Measurement of Sun's distance across Also see no extraordinary devices required You could have done this!

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YOUR NEED FOR SCIENTIFIC LITERACY

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Scientific education… … is information and comprehension of the logical ideas and procedures required for individual basic leadership , interest in community and social undertakings , and financial efficiency (National Academy of Sciences, 1995).

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Closing the Gaps The thinking behind CTG… . Innovative occupations have high pay. Innovative occupations require solid comprehension of logical standards. Subsequently, on the off chance that you need high pay, you have to have logical comprehension

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Education levels with More $$$

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Test Your Scientific Literacy Now we should take a logical proficiency test. Keep your score.

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Answer every question with "genuine" if what the sentence most ordinarily means is regularly valid and "false" on the off chance that it is normally false. 1. Researchers more often than not anticipate that a trial will turn out a specific way. 2. Science just delivers conditional conclusions that can change. 3. Science has one uniform method for leading examination called "the logical strategy." 4. Logical hypotheses are clarifications and not truths. 5. While being logical one must have confidence just in what is supported by experimental confirmation. 6. Science is just about the certainties, not human understandings of them. 7. To be logical one must direct analyses. 8. Logical speculations just change when new data gets to be accessible. 9. Researchers control their trials to create specific results. 10. Science demonstrates actualities valid in a way that is authoritative and last. 11. A test can demonstrate a hypothesis genuine. 12. Science is incompletely in view of convictions, suspicions, and the nonobservable. 13. Creative energy and inventiveness are utilized as a part of all phases of logical examinations.

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14. Logical hypotheses are only thoughts regarding how something functions. 15. A logical law is a hypothesis that has been widely and completely affirmed. 16. Researchers' instruction, foundation, sentiments, disciplinary center, and fundamental controlling suppositions and methods of insight impact their recognition and elucidation of the accessible information. 17. A logical law won't change since it has been demonstrated valid. 18. An acknowledged logical hypothesis is a theory that has been affirmed by significant proof and has persevered through all endeavors to refute it. 19. A logical law depicts connections among discernible marvels yet does not clarify them. 20. Science depends on conclusion (x involves y) more than acceptance (x infers y). 21. Researchers create clarifications, models or hypothetical elements. 22. Researchers develop speculations to manage facilitate investigate. 23. Researchers acknowledge the presence of hypothetical elements that have never been specifically watched. 24. Logical laws are supreme or certain.

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