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# February 26, 2014 - PowerPoint PPT Presentation

February 26, 2014. Homework: Quiz on section 1 ( Fluid Pressure) & 2 (Floating and Sinking) next Tuesday 3/4- Review Graphic organizer- make any changes/additions- redo on Loose leaf if necessary Do Now: -Open textbook to pg 85 -Open notebooks to pg 79- look over Graphic Organizer

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## PowerPoint Slideshow about ' February 26, 2014' - reeves

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• Homework: Quiz on section 1 ( Fluid Pressure) & 2 (Floating and Sinking) next Tuesday 3/4-

• Review Graphic organizer- make any changes/additions- redo on Loose leaf if necessary

Do Now:

-Open textbook to pg 85

-Open notebooks to pg 79- look over Graphic Organizer

-Talk about/Compare- any Vocab. Words you read in the section that you may not completely understand.

Exert - Displaced

Immersed (immerse)

Submerge(d)

Extra credit Option! – Define any words from the word wall and receive extra credit

3 words= 2 points

5 words= 4 points

Vocabulary Check in!

Unfamiliar Vocabulary?? Any others we can add??

Why does a ship have a greater buoyant force then the steel brick? Look at Figure 10- pg 85.

• A Greater buoyant force acts on larger objects –even if they have the same weight

• How do the Ducky &

Container Compare

to figure. 10?

Causes-What makes an object sink? brick? Look at Figure 10- pg 85.

Graphic Organizer

The buoyant force is less than the weight of the object

The object is denser

(more dense) than the fluid

Effect-

Object Sinks

If More Mass is added to the object it will increase the density, making the object sink

Compressing the fluid in an object (like air in an air tank or balloon.

Why does a ship float on the surface?- brick? Look at Figure 10- pg 85. Use Archimedes Principle to answer

• May work with a partner

• Write on pg. 81- Challenge! Can only answer using 3-4 sentences max

And DO NOT copy directly out of the book 

• The buoyant force equals the weight of the fluid the object displaces.

• The buoyant force will increase if more fluid is displaced.

• This means that the larger the object, like a ship, the greater the weight of fluid will be displaced and the greater the buoyant force

• This greater buoyant force be able to hold up the ship (making the ship be able to float, not sink…)

Not enough weight of displaced water for the size of the ship = not enough buoyant force to hold up the ship