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Physical Science PHS 101. Test 1. Beiser Chapter 1. 452 South Anderson Road Rock Hill, SC 29730 www.yorktech.com. Science is…. Latin: scientia , meaning "knowledge“
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Physical SciencePHS 101 Test 1 Beiser Chapter 1 452 South Anderson Road Rock Hill, SC 29730 www.yorktech.com
Science is… Latin: scientia, meaning "knowledge“ "Science is facts; just as houses are made of stones, so is science made of facts; but a pile of stones is not a house and a collection of facts is not necessarily science.“ - Henri Poincare
Science is… Three assumptions: • The unknown is knowable and we are capable of knowing the unknown. • There is order in nature. • The collective human intellect is capable of discovering this order.
Science is… "the observation, identification, description, experimental investigation, and theoretical explanation of natural phenomena.“ - American Heritage Dictionary of the English Language
Science is… A carpenter, a school teacher, and scientist were traveling by train through Scotland when they saw a black sheep through the window of the train. "Aha," said the carpenter with a smile, "I see that Scottish sheep are black." "Hmm," said the school teacher, "You mean that some Scottish sheep are black." "No," said the scientist glumly, "All we know is that there is at least one sheep in Scotland, and that at least one side of that one sheep is black."
Ockham's razor - William of Ockham (c. 1295–1349) • Entia non sunt multiplicanda praeter necessitatem ["entities must not be multiplied beyond necessity]. • Numquam ponenda est pluralitas sine necessitate [Plurality must never be posited without necessity], • Frustra fit per plura quod potest fieri per pauciora [It is futile to do with more things that which can be done with fewer • The simplest answer is usually the correct answer.
Why? Scientific Method • Physics - Motion & Energy • Physics - Electricity, Magnetism & Optics • Chemistry • Meteorology • Geology • Astronomy Tiger got to hunt, Bird got to fly; Man got to sit and wonder, "Why, why, why?"Tiger got to sleep, Bird got to land; Man got to tell himself he understand. - Kurt Vonnegut
Chapter 1 Physical Quantities Beiser p.1
Scientific Notation Good for very big or very small numbers. 300,000,000 = 3 x 100,000,000 = 3 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 3 x 108 0.0000052 = 5.2 ÷ 1,000,000 = 5.2 x 10-6 Beiser p.1
Unit Conversions Since 3 ft = 1 yd Beiser p.2
Unit Conversions Since 5280 ft = 1 mi and 1 m = 3.28 ft Beiser p.2
1000m 100m 10m 1m .1m .01m .001m kilo hecto deka meters deci centi milli km hm dkm m dm cm mm king henry died don’t call me Metric Arrow 3.72 dkm = 3720 cm 1.5 m = 1500 mm 1.5 m = .015 hm 1200 cm = 12 m 1655 dm = .1655 km Beiser p.2
Vector Addition Beiser p.3
1.27 Beiser p.9