Fluids - Science Quiz

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Questions and Answers

What property distinguishes adhesion from cohesion in fluids?

Formation of a meniscus in a container

Density comparison between liquids and gases

Attraction between unlike molecules (correct)

Resistance to flow within a fluid

Which characteristic is NOT associated with gases when compared to liquids?

High viscosity (correct)

Turbulent flow

Compressibility

Ability to fill a container

What is the primary difference between hydraulic and pneumatic systems?

Hydraulic systems are more efficient than pneumatic systems

Hydraulic systems use liquids, pneumatic systems use gases (correct)

Hydraulic systems operate at lower pressures than pneumatic systems

Pneumatic systems require more maintenance than hydraulic systems

Which of the following statements correctly describes viscosity?

It is the measure of a fluid's resistance to flow Signup and view all the answers

How can flow rate be correctly calculated?

By measuring the volume of fluid over time Signup and view all the answers

Which of the following items should students bring for the assessment?

Calculator Signup and view all the answers

What is the maximum number of marks a student can earn from the Short Answer/Problems section?

44 Signup and view all the answers

In the context of systems, which of the following best defines 'inputs'?

The energy, force, or raw materials put into a system Signup and view all the answers

Which of the following is an example of a side effect of a system?

Dizziness from using an iPad Signup and view all the answers

Which of the following equations represents the concept of Mechanical Advantage (MA) through output force and input force?

MA = $rac{output orce}{input orce}$ Signup and view all the answers

What distinguishes a physical system from a social system?

A physical system has parts and performs a task. Signup and view all the answers

What is a subsystem in the context of systems?

A system within a system. Signup and view all the answers

Which of the following best describes mechanisms in physical systems?

Mechanical parts that facilitate a task. Signup and view all the answers

Which statement accurately reflects systems thinking?

It considers how systems relate and evolve over time. Signup and view all the answers

What is mechanical advantage best defined as?

The ratio of load force to effort force. Signup and view all the answers

Which class of lever is defined by the load being positioned between the effort and the fulcrum?

Second class lever. Signup and view all the answers

What will allow you to lift a heavier load with less effort in mechanical systems?

Increasing the distance over which the force is applied. Signup and view all the answers

Which of the following actions does not typically involve automation?

Employing humans for manual labor. Signup and view all the answers

Study Notes

Fluids - Success Criteria

Students are able to distinguish between cohesion and adhesion
Students are able to distinguish between the states of matter — solid, liquid, and gas
Students are able to explain the difference between flow — turbulent and laminar flow
Students are able to identify cohesion, adhesion, and surface tension
Students are able to calculate the flow rate and give correct units
Students are able to explain pressure and explain the difference between compressibility
Students are able to explain viscosity and distinguish between high and low viscosity
Students are able to distinguish between hydraulic and pneumatic systems

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Description

Test your understanding of key concepts in fluids, including cohesion, adhesion, and the states of matter. This quiz covers flow types, pressure, viscosity, and differences between hydraulic and pneumatic systems. Brush up on your knowledge and see how well you can distinguish these terms.