States of MatterStates of Matter

FluidsFluids

ActivtyActivty

Will it float?Will it float? RockRock PotatoPotato Paper clipPaper clip PenPen PencilPencil CoinCoin CandleCandle EraserEraser

ObjectivesObjectives DescribeDescribe the buoyant force and explain the buoyant force and explain

how it keeps objects afloat.how it keeps objects afloat.

DefineDefine Archimedes’ principle. Archimedes’ principle.

ExplainExplain the role of density in an object’s the role of density in an object’s ability to float.ability to float.

StateState and apply Pascal’s principle. and apply Pascal’s principle.

StateState and apply Bernoulli’s principle. and apply Bernoulli’s principle.

DescribeDescribe the buoyant the buoyant force and explain how it force and explain how it

keeps objects afloat.keeps objects afloat.

DefineDefine Archimedes’ Archimedes’ principle.principle.

PressurePressure

Pressure = force / area = F / A

Units = Newton per square meter = pascal

Buoyant Force

BuoyancyUSS Dwight D. Eisenhower

Aircraft Carrier

Dimensions Length of flight deck:

1,092 ft. Width of flight deck: 252 ft. Height keel to mast: 244 ft.

(equal to 24-story building) Area of flight deck: 4.5

acres Weight of carrier: 95,000

tons

Archimedes’ Principle

Archimedes’ Principle

Explain Explain the role of density the role of density in an object’s ability to float.in an object’s ability to float.

Density and Floating

Density and Floating

Density and Floating

MythbustersMythbusters

http://videos.howstuffworks.com/discovery/6540-mythbusters-lets-talk-buoyancy-video.htm

State and applyState and apply Pascal’s Pascal’s principle.principle.

Pascal’s Principle

F1 / A1 = F2 / A2

State and applyState and apply Bernoulli’s Bernoulli’s principle.principle.

Bernoulli’s Principle