Your SlideShare is downloading. ×
  • Like
  • Save
8th Grade Chapter 4 Lesson 2
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Now you can save presentations on your phone or tablet

Available for both IPhone and Android

Text the download link to your phone

Standard text messaging rates apply

8th Grade Chapter 4 Lesson 2

  • 718 views
Published

For Student Use Only

For Student Use Only

Published in Business , Technology
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
718
On SlideShare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
0
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. 8 th Grade Chapter 4 Lesson 2 Pgs. 145-152 For Student Use Only
  • 2. Laws of Fluids
    • Fluids can be in motion or at rest
    • Fluids at rest is pressed upon either by an outside force or its own weight
    • Important Laws:
      • Pascal’s Principle (Blaise Pascal)
      • Boyle’s Law (Robert Boyle)
      • Charles’s Law (Jacques Charles)
  • 3. Laws of Fluids
    • Pascal’s Principle:
      • The pressure applied to any surface of a confined fluid is transmitted equally in every direction throughout the fluid.
      • Pressure is distributed equally throughout the whole object
  • 4. Laws of Fluids
    • Pressure:
      • The amount of force pressing down on each unit of area
      • For every 1 psi= one pound of force pushes upon each square inch of the objects surface
        • Normal Atmospheric pressure= 14.7 psi
        • Car Tires= 30-35 psi above atmospheric pressure
        • Bicycle Tires= 60-90 psi
  • 5. Laws of Fluids
    • Pressure:
      • Hydraulic Jack-
        • Use Pascal’s principle
        • 2 sealed containers which contain a fluid
          • One container with a small piston
          • One container with a large piston
        • Force= Pressure x Area
          • F= PA
        • Work input= work output
  • 6. Laws of Fluids
    • Gas Laws:
      • Boyle’s Law:
        • NOTE: When the pressure upon a gas is lowered, the volume of the gas increases
        • Boyle’s Law= The product of the pressure and volume of a gas is a constant if the temperature remains unchanged
        • OR= As long as the temperature of a gas remains constant, its volume will be inversely related to its pressure
        • P 1 /P 2 =V 2 V 1
  • 7. Laws of Fluids
    • Charles’s Law:
      • Law= As long as pressure of gas is constant, its volume is directly related to temperature
        • V 1 /T 1 =V 2 T 2
      • Law= If volume of a gas is a constant, its pressure and temperature are directly related
        • P 1 /T 1 = P 2 /T 2
      • These are both DIRECT relationships
  • 8. Laws of Fluids
    • Tying Laws together:
      • The hotter the substance the faster the motion, the cooler the substance the slower the motion
      • Absolute Zero= when atoms cease to move
        • Kelvin Scale= from absolute zero on
        • Kelvin= 273.15 + Celsius Temperature
        • Gases are even frozen solid
  • 9. Laws of Fluids
    • Temperatures:
      • Kinetic Theory helps explain why gasses behave the way they do (Charles’ Law)
        • Gases move fast and spread out as they get hot= more collsions
        • Gases slow down as they cool= less collisions
    • Volume:
      • Kinetic Theory helps explain why gases work in Boyle’s law
        • As volume increases and temperature is the same= less collisions (have more room to move)
        • As volume decreases and temperature is the same= more collisions (have less room to move)