C3 - Types of Fluid

Question 1

What substances are classes as fluids?

Answer 1

Liquids and gases

Question 2

What type of substance are liquids and gases?

Answer 2

Fluids

Question 3

What are the features of laminar (streamlined) fluid flow?

Answer 3

Layers of fluid slide past each other and don’t cross. Low friction between fluid layers

Question 4

What type of fluid flow has layers that slide past each other with low friction?

Answer 4

Laminar (streamlined) fluid flow

Question 5

What are the features of turbulent fluid flow?

Answer 5

Layers of liquid mix and cross over. High friction between layers

Question 6

What type of fluid flow has layers that cross over with high friction between layers?

Answer 6

Turbulent fluid flow

Question 7

When a fluid flows over a vehicle where is the flow most turbulent?

Answer 7

At the back of the vehicle

Question 8

What happens to fluid flow at the back of a moving vehicle?

Answer 8

It is turbulent

Question 9

What do streamlined shapes do?

Answer 9

Reduce friction (drag)

Question 10

What types of shape reduce friction (drag)?

Answer 10

Streamlined

Question 11

How do streamlined shapes reduce friction (drag)?

Answer 11

By reducing the amount of turbulent flow at the back of the vehicle

Question 12

Streamlined shapes reduce the amount of turbulent flow at the back of vehicles. What does this do?

Answer 12

Reduce drag (friction)