Fluids

Question 1

What is dynamic friction?

Answer 1

A force that is constantly trying to remove energy

Dynamic friction occurs when an object is in motion and experiences resistance due to contact with another surface.

Question 2

What is static friction?

Answer 2

Stops something from starting to move

Static friction acts on objects that are not moving and prevents them from starting to move.

Question 3

What is the definition of friction?

Answer 3

A force that resists movement

Friction is the resistance that one surface or object encounters when moving over another.

Question 4

What does viscosity refer to?

Answer 4

How easily a fluid flows

Viscosity is a measure of a fluid’s resistance to flow, with higher viscosity indicating a thicker fluid.

Question 5

More friction = less flow = _____________

Fill in the blank

Answer 5

Higher Viscosity

Question 6

Less friction = More flow = _____________

Fill in the blank

Answer 6

Lower Viscosity

Question 7

What is flow?

Answer 7

Particles move around each other and take the shape of their container.

Question 8

What states of matter exhibit flow?

Answer 8

Liquids, gases, and plasma.

Question 9

How do forces affect flow?

Answer 9

Forces change the behavior of particles in flow.

Question 10

What is a Non-Newtonian Fluid?

Answer 10

A fluid whose viscosity is not constant.

Question 11

How does viscosity change in a Non-Newtonian Fluid?

Answer 11

Viscosity changes when you apply a force.

Question 12

Non-Newtonian Fluids

What happens to viscosity with more pressure?

Answer 12

More pressure results in more resistance inside (higher viscosity).

Question 13

Non-Newtonian Fluids

What happens to viscosity with less pressure?

Answer 13

Less pressure allows the fluid to flow easier (lower viscosity).

Question 14

What are examples of Non-Newtonian Fluids?

Answer 14

Examples include blood, cement, and quicksand.

Question 15

What are liquids and gases classified as?

Answer 15

Fluids

Question 16

What characteristic allows fluids to flow?

Answer 16

Molecules move around each other because of a weak bond

Question 17

What shape do fluids take?

Answer 17

The shape of their container

Question 18

In what manner do fluids exert pressure?

Answer 18

In all directions

Question 19

Can fluids be compressed?

Answer 19

Yes

Question 20

Which type of fluid is easier to compress?

Answer 20

Gas

Question 21

Which type of fluid is harder to compress?

Answer 21

Liquid

Question 22

What is one role of fluid in the context of drinking water with a pill and how does it help?

Answer 22

Reducing friction and it lubricates the pill for easier swallowing

Question 23

What role does fluid play in flushing the toilet?

Answer 23

Suspension and lubrication

Question 24

What is the role of motor oil in an engine and how does motor oil affect friction on engine parts?

Answer 24

Lubrication and it reduces friction

Question 25

What is a cooking oil's role when making pancakes?

Answer 25

Lubrication and reducing friction

Question 26

What does cooking oil prevent when cooking?

Answer 26

Stops food from sticking to surfaces

Question 27

What role does fluid play when putting on shoes?

Answer 27

Reducing friction and cushioning

Question 28

What is the purpose of gel in insoles?

Answer 28

Cushion feet

Question 29

What is a slurry?

Answer 29

Mixture of solids and liquids

Question 30

What is the purpose of a slurry?

Answer 30

Makes the solids easier to transport

Question 31

Give one examples of where slurry is used.

Answer 31

Concrete

Question 32

What is paper pulp?

Answer 32

A form of slurry used in paper production

Question 33

What can fluids become?

Answer 33

Solids ## Footnote Fluids can transition into solid states under certain conditions.

Question 34

Why can solids be easier to transport than liquids?

Answer 34

Solids are generally easier to transport ## Footnote Solids are more stable and less likely to spill during transport.

Question 35

In what form can solids be sometimes found?

Answer 35

As liquids ## Footnote Some materials can exist in both solid and liquid states depending on conditions.

Question 36

What are two applications where solids are easier to move and apply?

Answer 36

Caulking, concrete ## Footnote These materials are commonly used in construction and repairs.

Question 37

What is one use of oil in a car?

Answer 37

Reduce friction ## Footnote Oil in a car helps to minimize the resistance between moving parts, enhancing performance.

Question 38

What is another use of oil in a pan?

Answer 38

Reduce friction ## Footnote Oil in a pan prevents food from sticking and ensures even cooking.

Question 39

Name a benefit of using oil in machinery.

Answer 39

Reduce heat and noise ## Footnote Oil lubricates parts, which reduces the heat generated by friction and minimizes operational noise.

Question 40

What protective function does oil serve?

Answer 40

Protective barrier for corrosion ## Footnote Oil forms a layer that helps shield metal surfaces from corrosive elements.

Question 41

How does oil help in regulating temperature?

Answer 41

Regulating temperature ## Footnote Oil can absorb and dissipate heat, helping to maintain optimal operating temperatures.

Question 42

What is a cushioning effect provided by oil?

Answer 42

Cushioning (air in tire) ## Footnote Oil can act similarly to air in a tire, providing a cushioning effect that absorbs shocks.

Question 43

What is thermal expansion?

Answer 43

Thermal expansion is the increase in volume of matter when energy (heat) is added.

Question 44

What happens to particles during thermal expansion?

Answer 44

Particles move faster.

Question 45

What occurs to the volume of matter during thermal expansion?

Answer 45

Matter increases in volume.

Question 46

Does thermal expansion apply to all matter?

Answer 46

Yes, it applies to all matter.

Question 47

Give three examples of thermal expansion.

Answer 47

* Train tracks * Bridge * Joints

Question 48

What volume do different molicules have?

Answer 48

The have different volumes

Question 49

What determines flow?

Answer 49

Viscosity

Question 50

For liquids: The higher the temperature the ________ the viscosity. Why?

Answer 50

Lower. Because the molecules have less time to bond together. Making them slip by each other.

Question 51

For gases: The higher the temperature the ________ the viscosity. Why?

Answer 51

Higher. Because when the molecules speed up they start crashing into each other and slowing down.

Question 52

What is the formula to find volume?

Answer 52

V= LxWxH