PowerPoint Presentation - 5A = Sec 1 = Organizing the Elements pp
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This is 3 D. We are doing section 4 before section 3. That is Boyle’s Law before Archimedes’ Ch 3.3 States of Matter Physical Science 08 Lee Ann Youse PS08 14 Slides & 27 Slides 1 3.3 B 4/8/2015 3.3 Quizzes 3.3 A Questions 45-54 tomorrow--Tuesday 3.3 B Questions 45-64 (but mostly 55 -64) the next day-- Wed Remember ‘Half’ Test for section 3.3 & 3.4 will be the day after that--Thurs. It will add with the ‘Half’ Test we took on 3.1 & 3.2. THERE WILL BE NO TEST ON ALL OF CHAPTER 3 AT THE SAME TIME. What were those book authors thinking!!!!! PS08 14 Slides & 27 Slides 2 4/8/2015 Define pressure The amount of force exerted on a given area of surface PS08 14 Slides & 27 Slides 3 4/8/2015 Give how fluids are different (from solids ) They exert pressure evenly in all directions PS08 14 Slides & 27 Slides 4 4/8/2015 Review Kinetic Theory of Matter . PS08 14 Slides & 27 Slides 5 4/8/2015 Using the kinetic theory of matter to explain how air in a tire (or balloon) works Tiny air particles push (force) against each other and against the sides, causing pressure in all directions PS08 14 Slides & 27 Slides 6 4/8/2015 Give the formula for pressure in words and symbol form Pressure is equal to force divided by area P = PS08 14 Slides & 27 Slides F A 7 4/8/2015 Give the formula symbol for pressure P PS08 14 Slides & 27 Slides 8 4/8/2015 Give the formula symbol for force F PS08 14 Slides & 27 Slides 9 4/8/2015 Give the formula symbol for area A PS08 14 Slides & 27 Slides 10 4/8/2015 Give the SI unit and its abbreviation for pressure pascal Pa PS08 14 Slides & 27 Slides 11 4/8/2015 Give the SI unit and its abbreviation for force newton N PS08 14 Slides & 27 Slides 12 4/8/2015 Give the SI unit and its abbreviation for area meters squared m2 PS08 14 Slides & 27 Slides 13 4/8/2015 On a clean Sheet of Paper Calculate Pressure, Force, or area Write the formula (rearrange if necessary) Substitute # in formula Calculate Write Answer with correct unit. PS08 14 Slides & 27 Slides 14 4/8/2015 Quiz tomorrow on Q 45-54 PS08 14 Slides & 27 Slides 15 4/8/2015 Define buoyant force An upward push exerted by a fluid http://www.sciencewithme.com/images/uploads/Image/articles/Boat/ice.jpg PS08 14 Slides & 27 Slides 16 4/8/2015 Explain how buoyant force works Pressure (F/A) increases with depth. The force pushing up is greater than the force pushing down. The net force is upward http://room34pstext.wikispaces.com/8.8+D ensity+and+Buoyancy video near the bottom of this page http://demo.physics.uiuc.edu/lectdemo/scripts/demo_descript.idc?DemoID=759 PS08 14 Slides & 27 Slides 17 4/8/2015 State and use Archimedes’ Principle The buoyant force on an object in a fluid is an upward force equal to the weight of the fluid displaced (moved aside) PS08 14 http://www.mcs.drexel.edu/~crorres/Archimedes/contents.html http://www.mcs.drexel.edu/~crorres/Archimedes/contents.html http://www.ssl.umd.edu/projects/ControlStation/Personal/SCUBA/Physics&P Slides & 27 Slides 18 hys/physics.html 4/8/2015 Using Archimedes’ Principle, explain how to determine whether an object will float or sink Compare the buoyant force on the object with the object’s weight. If the buoyant force is equal to the weight then the object will float. If buoyant force is less then the object will sink. PS08 14 Slides & 27 Slides 19 4/8/2015 Demo “A SHIP, A ROCK AND A LOG” http://www.onr.navy.mil/focus/blowballast/sub /work2.htm PS08 14 Slides & 27 Slides 20 4/8/2015 Using the quantity, density, explain how to determine whether an object will float or sink If the density is greater than the density of water, then it will sink. If the density is less than the density of water, it will float. http://www.dynamicscience.com.au/tester/solutions/flight/buoyancy.htm PS08 14 Slides & 27 Slides 21 4/8/2015 explain how various materials that are denser than water can still float on water (i.e., a steel ship, sub, etc.) Using Archimedes’ Principle and density, Ships have the steel pushed out into a hollow shape. The shape is larger and pushes more water aside, giving it a larger buoyant force. Since there is air as well as steel in the ship, the density of the whole ship is less than that of water. http://3.bp.blogspot.com/_zSLJzcRUXK0/SYEK_Io7nyI/AAAAAAAAAJI/qrped9 K3N1c/S226/buoyant2.gif http://askville.amazon.com/physical-principle-work-calledbuoyancy/AnswerDetails.do?requestId=64523085&responseId=64556921 PS08 14 Slides & 27 Slides 22 4/8/2015 State and use Pascal’s Principle http://dixiehu.files.wordpress.com/2008/02/pascals-law.jpg Pressure Applied to a fluid Is transmitted unchanged through out the fluid. (toothpaste tube, Cartesian Diver, hydraulic devices) video http://www.wfu.edu/physics/demolabs/dem os/avimov/bychptr/chptr4_matter.htm PS08 14 Slides & 27 Slides 23 4/8/2015 Give and use Pascal’s principle expressed in mathematical form Go to website: http://home.planet.nl/~brink494/hydr _e.htm F1 A1 = A2 PS08 14 Slides & 27 Slides F2 24 4/8/2015 State and use Bernoulli’s Principle As the velocity of a fluid increases, the pressure exerted by the fluid decreases http://abyss.uoregon.edu/~js/images/bernoulli.gif http://image.wistatutor.com/content/sourcesenergy/wind-turbine.jpeg (airplane lift, race car design) http://en.wikipedia.org/wiki/Daniel_Bernoulli PS08 14 Slides & 27 Slides 25 4/8/2015 State and use the Venturi Effect http://en.wikipedia.org/wiki/Venturi_effect PS08 14 Slides & 27 Slides 26 4/8/2015 http://www.abac.co.uk/Spraying/Images/SparayGun%20Working%20Diag.gif http://dnr.louisiana.gov/sec/execdiv/techasmt/ecep/drafting/b/dr-b13b.gif http://www.thestudentroom.co.uk/showthread.php?t=1210181 Use the Venturi Effect Bahrain PS08 14 Slides & 27 Slides 27 4/8/2015 State and use the Venturi Effect Fluids flow faster when forced to flow in narrow places. (rapids, garden hose, squirt bottles, windy cities, etc.) See this video http://home.earthlink.net/~mmc1919/ventur i.html http://en.wikipedia.org/wiki/Giovanni_Battista_Venturi PS08 14 Slides & 27 Slides 28 4/8/2015 State and use the Venturi Effect Fluids flow faster when forced to flow in narrow places. (rapids, garden hose, squirt bottles, windy cities, etc.) See this video http://home.earthlink.net/~m mc1919/venturi.html http://en.wikipedia.org/wiki/Giovanni_Battista_Venturi http://en.wikipedia.org/wiki/Venturi_effect PS08 14 Slides & 27 Slides 29 4/8/2015 The end Quiz tomorrow Q 45-64 (mostly 55-64). “Half” TEST the next day PS08 14 Slides & 27 Slides 30 4/8/2015
