Viscosity, Adhesion, Cohesion

Question 1

If the the fluid flows slow, Is the viscosity greater or lesser?

Answer 1

Greater

Question 2

Why do some fluids flow faster than other fluids?

Answer 2

-there particles are made of different shapes and sizes so some particles can flow past eachother with greater ease than other particles
-force of attraction between particles. The
PArticles are attracted more strongly to each other than the particle in other fluids are

Question 3

What is a good example of how shape can produce different viscosities and why?

Answer 3

Water and oil because oil molecules have a complicated shape which makes it for the molecules to move past eachother where as water molecules are more simple and smaller, so they can flow past eachother with greater ease

Question 4

How can you compare the viscosity of two fluid?

Answer 4

Comparing there flow rate

Question 5

Flow rate?

Answer 5

The speed at which a fluid flows from one point to another

Question 6

Why is it hard to start your car on cold Canadian mornings?

Answer 6

The oil that lubricates the engine can become very stiff and resistant to flow under cold conditions. When the oil is resistant to flow, it is difficult for the parts of the motor to move.

Question 7

Does viscosity play a bigger role I gases or liquids?

Answer 7

Liquids

Question 8

Why do fluids play a bigger role in liquids than gases?

Answer 8

Gases have much more spaces between particles, so the interaction between particles cannot cause a resistance to flow. Water particles are closer together. The size and shape of liquid particles and attraction between particles contribute to friction. Friction slows the rate at which a fluid can flow.

Question 9

What happens when a liquid is heated?

Answer 9

Heated…particles farther apart…less attraction between particles….less friction… Viscosity decreases

Question 10

Liquid cooled?

Answer 10

Cooled…particles closer together…increased attraction between particles… More friction…viscosity increases

Question 11

Gas heated ?

Answer 11

Heated…particles farther apart…particles move faster… More collisions, more friction, viscosity increase

Question 12

Gas cooled?

Answer 12

Cooled…particles move closer…particles move slower…fewer collisions, less friction…viscosity decreases

Question 13

Adhesion?

Answer 13

Attraction or joining of two different objects or fluids to each other

Question 14

Polarity?

Answer 14

One end of each particle is slightly positive and the other end is slightly negative

Question 15

Cohesion?

Answer 15

Strength with which the particles of an object or fluid attract each other

Question 16

Surface tension?

Answer 16

Property of a liquid in which the surface of the liquid acts like a thin skin or trampoline

Question 17

Viscosity?

Answer 17

The resistance of a fluid to flow