ch 3.3 states of matter physical science 08 lee ann youse ps08 14 slides & 27 slides this is 3...
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Ch 3.3 States Ch 3.3 States of Matterof Matter
Physical Science 08Physical Science 08Lee Ann YouseLee Ann Youse
PS08 14 Slides & 27 Slides
This is 3 D. We are doing section 4 before section 3. That is Boyle’s Law before Archimedes’
3.3 B04/19/231
3.3 Quizzes3.3 Quizzes
3.3 A Questions 45-54 tomorrow--Tuesday3.3 A Questions 45-54 tomorrow--Tuesday 3.3 B Questions 45-64 (but mostly 55 -64) 3.3 B Questions 45-64 (but mostly 55 -64)
the next day--Wedthe next day--Wed Remember Remember ‘‘HalfHalf’’ Test for section 3.3 & 3.4 Test for section 3.3 & 3.4
will be the day after that--Thurs. It will add will be the day after that--Thurs. It will add with the with the ‘‘HalfHalf’’ Test we took on 3.1 & 3.2. Test we took on 3.1 & 3.2. THERE WILL BE NO TEST ON ALL OF THERE WILL BE NO TEST ON ALL OF CHAPTER 3 AT THE SAME TIME. What were CHAPTER 3 AT THE SAME TIME. What were those book authors thinking!!!!! those book authors thinking!!!!!
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Define pressureDefine pressure
The amount of forceThe amount of force
exerted onexerted on
a given area of surface a given area of surface
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Give how fluids are different Give how fluids are different (from solids )(from solids )
They exert pressure evenly in all directions They exert pressure evenly in all directions
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Review Kinetic Theory of Review Kinetic Theory of Matter Matter
..
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Using the kinetic theory of matter Using the kinetic theory of matter to explain how air in a tire (or to explain how air in a tire (or
balloon) worksballoon) works
Tiny air particlesTiny air particles
push (force) against each other and against push (force) against each other and against the sides,the sides,
causingcausing pressure in all directions pressure in all directions
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Give the formula for Give the formula for pressure in words and pressure in words and
symbol form symbol form Pressure is equal to force divided by area Pressure is equal to force divided by area
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Give the formula symbol for Give the formula symbol for pressure pressure
PP
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Give the formula symbol Give the formula symbol for forcefor force
FF
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Give the formula symbol Give the formula symbol for areafor area
AA
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Give the SI unit and its Give the SI unit and its abbreviation for abbreviation for
pressurepressure
pascalpascal
PaPa
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Give the SI unit and its Give the SI unit and its abbreviation for forceabbreviation for force
newtonnewton
NN
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Give the SI unit and its Give the SI unit and its abbreviation for areaabbreviation for area
meters squaredmeters squared
mm22
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On a clean Sheet of On a clean Sheet of PaperPaper
Calculate Pressure, Force, or areaCalculate Pressure, Force, or area
Write the formula (rearrange if necessary)Write the formula (rearrange if necessary)
Substitute # in formulaSubstitute # in formula
CalculateCalculate
Write Answer with correct unit.Write Answer with correct unit.
04/19/23PS08 14 Slides & 27 Slides 14
Quiz Quiz tomorrow on tomorrow on
Q 45-54Q 45-54
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Define buoyant Define buoyant forceforce
An upward An upward
push push
exerted by a fluid exerted by a fluid
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http://www.sciencewithme.com/images/uploads/Image/articles/Boat/ice.jpg
Explain how buoyant Explain how buoyant force works force works
Pressure (F/A) increases with depth. Pressure (F/A) increases with depth.
The force pushing up is greater than the The force pushing up is greater than the force pushing down. force pushing down.
The net force is upward The net force is upward
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http://room34pstext.wikispaces.com/8.8+Density+and+Buoyancyvideo near the bottom of this page
http://demo.physics.uiuc.edu/lectdemo/scripts/demo_descript.idc?DemoID=759
State and use ArchimedesState and use Archimedes’’ Principle Principle
The buoyant force on an object in a fluid The buoyant force on an object in a fluid
is an upward force equal to the weight is an upward force equal to the weight
of the fluid displaced (moved aside) of the fluid displaced (moved aside)
PS08 14 Slides & 27 Slides
http://www.mcs.drexel.edu/~crorres/Archimedes/contents.htmlhttp://www.mcs.drexel.edu/~crorres/Archimedes/contents.htmlhttp://www.mcs.drexel.edu/~crorres/Archimedes/contents.htmlhttp://www.mcs.drexel.edu/~crorres/Archimedes/contents.html
04/19/2318
http://www.mcs.drexel.edu/~crorres/Archimedes/contents.htmlhttp://www.ssl.umd.edu/projects/ControlStation/Personal/SCUBA/Physics&Phys/physics.html
http://www.mcs.drexel.edu/~crorres/Archimedes/contents.htmlhttp://www.ssl.umd.edu/projects/ControlStation/Personal/SCUBA/Physics&Phys/physics.html
Using ArchimedesUsing Archimedes’’ Principle Principle, explain how to , explain how to determine whether an object will determine whether an object will
float or sink float or sink
Compare the buoyant force on the object Compare the buoyant force on the object with the objectwith the object’’s weight. s weight.
If the buoyant force is equal to the weight If the buoyant force is equal to the weight then the object will float. then the object will float.
If buoyant force is less then the object will If buoyant force is less then the object will sink. sink.
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Demo Demo ““A SHIP, A ROCK AND A SHIP, A ROCK AND A LOGA LOG””
http://www.onr.navy.mil/focus/http://www.onr.navy.mil/focus/blowballast/sub/work2.htmblowballast/sub/work2.htm
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Using the quantity, density, explain Using the quantity, density, explain how to determine whether an object how to determine whether an object
will float or sink will float or sink
If the density is greater than the density of If the density is greater than the density of water, then it will sink. water, then it will sink.
If the density is less than the density of If the density is less than the density of water, it will float. water, it will float.
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http://www.dynamicscience.com.au/tester/solutions/flight/buoyancy.htm
Using ArchimedesUsing Archimedes’’ Principle and density, Principle and density, explain explain how various materials that are how various materials that are
denser than waterdenser than water can still float can still float on water on water (i.e., a steel ship, sub, etc.) (i.e., a steel ship, sub, etc.)
Ships have the steel pushed out into a Ships have the steel pushed out into a hollow shape. The shape is larger and hollow shape. The shape is larger and pushes more water aside, pushes more water aside,
giving it a larger buoyant force. giving it a larger buoyant force.
Since there is air as well as steel in the Since there is air as well as steel in the ship,ship,
the density of the whole ship is less than the density of the whole ship is less than that of water. that of water.
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http://3.bp.blogspot.com/_zSLJzcRUXK0/SYEK_Io7nyI/AAAAAAAAAJI/qrped9K3N1c/S226/buoyant2.gifhttp://askville.amazon.com/physical-principle-work-called-buoyancy/AnswerDetails.do?requestId=64523085&responseId=64556921
State and use PascalState and use Pascal’’s s PrinciplePrinciple
Pressure Pressure
Applied to a fluidApplied to a fluid
Is transmitted unchangedIs transmitted unchanged
through out the fluid.through out the fluid.
(toothpaste tube, Cartesian Diver, hydraulic (toothpaste tube, Cartesian Diver, hydraulic devices) devices)
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videohttp://www.wfu.edu/physics/demolabs/demos/avimov/bychptr/chptr4_matter.htm
http://dixiehu.files.wordpress.com/2008/02/pascals-law.jpg
Give and use PascalGive and use Pascal’’s s principle expressed in principle expressed in
mathematical formmathematical form
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Go to website:http://home.planet.nl/~brink494/hydr_e.htm
State and use BernoulliState and use Bernoulli’’s s PrinciplePrinciple
As the velocity of a fluid As the velocity of a fluid increases, increases,
the pressure exerted by the the pressure exerted by the fluid decreasesfluid decreases
(airplane lift, race car (airplane lift, race car design) design)
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http://en.wikipedia.org/wiki/Daniel_Bernoulli
http://image.wistatutor.com/content/sources-energy/wind-turbine.jpeg
http://abyss.uoregon.edu/~js/images/bernoulli.gif
State and use the Venturi State and use the Venturi Effect Effect
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http://en.wikipedia.org/wiki/Venturi_effect
Use the Venturi Effect Use the Venturi Effect
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http://www.abac.co.uk/Spraying/Images/SparayGun%20Working%20Diag.gifhttp://dnr.louisiana.gov/sec/execdiv/techasmt/ecep/drafting/b/dr-b13b.gifhttp://www.thestudentroom.co.uk/showthread.php?t=1210181
Bahrain
State and use the Venturi State and use the Venturi Effect Effect
Fluids flow faster when Fluids flow faster when forced to flow in narrow forced to flow in narrow places.places.
(rapids, garden hose, squirt (rapids, garden hose, squirt bottles, windy cities, etc.) bottles, windy cities, etc.)
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See this video
http://home.earthlink.net/~mmc1919/venturi.html
http://en.wikipedia.org/wiki/Giovanni_Battista_Venturi
State and use the Venturi State and use the Venturi Effect Effect
Fluids flow faster when Fluids flow faster when forced to flow in narrow forced to flow in narrow places.places.
(rapids, garden hose, squirt (rapids, garden hose, squirt bottles, windy cities, etc.) bottles, windy cities, etc.)
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See this video
http://home.earthlink.net/~mmc1919/venturi.html
http://en.wikipedia.org/wiki/Giovanni_Battista_Venturihttp://en.wikipedia.org/wiki/Venturi_effect
The endThe endQuiz tomorrow Quiz tomorrow Q 45-64 Q 45-64 (mostly 55-64). (mostly 55-64).
““HalfHalf”” TEST the TEST the next daynext day
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