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CHARACTERISTICS OF FLUIDS

UNDERSTANDING MATTER & ENERGY FLUIDS

MRSTAV

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UNDERSTANDING MATTER & ENERGY FLUIDS

2.7  use appropriate science and technology vocabulary in oral and written communication

MRSTAV

CURRICULUM

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UNDERSTANDING MATTER & ENERGY FLUIDS

2.7  use appropriate science and technology vocabulary in oral and written communication

MRSTAV

CURRICULUM

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UNDERSTANDING MATTER & ENERGY FLUIDS

3.6  explain in qualitative terms the relationship between pressure, volume, and temperature when a liquid (e.g., water) or a gas (e.g., air) is compressed or heated

MRSTAV

CURRICULUM

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FLOW RATE

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FLOW RATE

  • it is measured as a volume per unit of time (e.g. L/s)

the flow rate of a fluid is a measure of how quickly the fluid �moves

FLOW

RATE

__________________

=

volume of fluid

length of time

___

=

v

t

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TRY IT

It takes Juliet 12 seconds to fill up her 1 L bucket. What is the flow rate?

FLOW

RATE

___

=

v

t

FLOW

RATE

___

=

1L

12s

FLOW

RATE

0.08

=

L/s

MRSTAV

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FLOW RATE

  • type of fluid
    • thinner fluid = faster flow
  • the force pushing on the fluid
    • more force = faster flow
  • size of the pipe or opening
    • larger = faster flow
  • type of surface the fluid flows over
    • smoother = faster flow

is affected by:

MRSTAV

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VISCOSITY

MRSTAV

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VISCOSITY

a measure of how easily the fluids particles are able to slide past each other

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the ‘thickness’ of the fluid or the ability of the fluid to flow

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PREDICT

OBSERVE

EXPLAIN

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VISCOSITY�VARIETY

PREDICT

OBSERVE

EXPLAIN

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PREDICT

P

PREDICT

OBSERVE

EXPLAIN

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PREDICT

P

IF/THEN STATEMENT

IF…

If we place a drop of each fluid on the card,

THEN…

then ???? Will drip down the fastest and ???? Will drip down the slowest.

PREDICT

OBSERVE

EXPLAIN

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PREDICT

P

Predict and list the fluids in order from fastest flow to slowest flow.

PREDICT

OBSERVE

EXPLAIN

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OBSERVE

O

PREDICT

OBSERVE

EXPLAIN

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PREDICT

OBSERVE

EXPLAIN

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EXPLAIN

E

  1. What was different between �your predictions and your observations?
  2. What was the same between your predictions and your observations?  
  3. How are viscosity and flow rate related?

PREDICT

OBSERVE

EXPLAIN

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EXPLAIN

E

RESIZE THE RECTANGLES TO RECORD A RELATIVE COMPARISON OF THE RATE AT WHICH EACH FLUID FLOWS

PREDICT

OBSERVE

EXPLAIN

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VISCOSITY

viscosity is affected by the COHESION and ADHESION of the fluid

the ‘thickness’ of the fluid or the ability of the fluid to flow

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COHESION

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COHESION

ADHESION

attraction between the same

attraction between another

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COHESION

    • fluids with higher cohesion will be more viscous and flow more slowly than fluids with lower cohesion

the force of attraction between the particles of a substance

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COHESION

    • cohesion is responsible for the surface tension �(strong attraction between the surface particles of a fluid)
      • e.g. water striders are able to stay on the surface of the water because of surface tension

the force of attraction between the particles of a substance

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ADHESION

    • fluids with higher adhesion will stick more to the container or pipe that they are flowing past and this will cause their flow rate to be slower

is the force of attraction between the particles of one substance and the particles of another substance

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ADHESION

    • adhesion causes traces of a fluid to be left in a container after it is poured out

is the force of attraction between the particles of one substance and the particles of another substance

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ADHESION

    • adhesion also causes fluids to flow faster in the middle of pipes rather than at the edges because the fluids stick to the pipes as they pass
      • fluids also flow faster in the center of a stream than at the edges

is the force of attraction between the particles of one substance and the particles of another substance

MRSTAV

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COHESION

ADHESION

attraction between the same

attraction between another

MRSTAV

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WONDERFUL�WATER

PREDICT

OBSERVE

EXPLAIN

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WONDERFUL�WATER�COHESION

PREDICT

OBSERVE

EXPLAIN

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PREDICT

P

PREDICT

OBSERVE

EXPLAIN

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PREDICT

P

IF/THEN STATEMENT

IF…

If we place a drop of water on the coin,

THEN…

then ????.

PREDICT

OBSERVE

EXPLAIN

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OBSERVE

O

PREDICT

OBSERVE

EXPLAIN

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PREDICT

OBSERVE

EXPLAIN

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WONDERFUL�WATER�SURFACE TENSION

PREDICT

OBSERVE

EXPLAIN

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PREDICT

P

PREDICT

OBSERVE

EXPLAIN

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PREDICT

P

IF/THEN STATEMENT

IF…

If we place a paperclip on the surface of water,

THEN…

then it will ????.

PREDICT

OBSERVE

EXPLAIN

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OBSERVE

O

PREDICT

OBSERVE

EXPLAIN

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PREDICT

OBSERVE

EXPLAIN

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WONDERFUL�WATER�ADHESION

PREDICT

OBSERVE

EXPLAIN

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PREDICT

P

PREDICT

OBSERVE

EXPLAIN

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OBSERVE

O

PREDICT

OBSERVE

EXPLAIN

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EXPLAIN

E

  1. How was each characteristic �of fluids demonstrated? 
    1. Cohesion
    2. Surface Tension
    3. Adhesion

PREDICT

OBSERVE

EXPLAIN

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FASTER �FLOW

PREDICT

OBSERVE

EXPLAIN

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PREDICT

OBSERVE

EXPLAIN

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PREDICT

OBSERVE

EXPLAIN

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PREDICT

P

PREDICT

OBSERVE

EXPLAIN

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OBSERVE

O

PREDICT

OBSERVE

EXPLAIN

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EXPLAIN

E

  1. Were the results what you expected to see? Identify any differences.
  2. Explain your observations using the ideas of the particle theory.

PREDICT

OBSERVE

EXPLAIN

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  • Flow
  • Flow Rate
  • L/s
  • Viscosity
  • Cohesion
  • Adhesion
  • Surface Tension

​

ADD IT TO THE

W

WORD

W

WALL