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Flow Velocity - Questions

The Flow Velocity Concept Builder is comprised of 44 questions. The questions are divided into 12 different question groups and spread across three different activities. Questions in the same group are rather similar to one another. The Concept Builder is coded to select at random a question from each group until a student is successful with that group of questions.

The questions and question groups are organized into three different activities. The activities are differentiated as follows:
  • Case Studies  Question Groups 1-4: Students must compare the volumetric flow rate (m3/s) and the flow velocity at a location after a widening or narrowing of a flow tube to a location before the change.
  • Ranking Tasks  Question Groups 5-8: Students must rank three situations involving the widening or narrowing of a flow tube according to the output velocity. Information about the input velocity, the initial cross-sectional area (or diameter), and the final cross-sectional area (or diameter) are given.
  • Law Breakers  Question Groups 9-12: Students are presented with three situations. The input velocity, output velocity, and initial and final cross-sectional areas are given. Students must identify any situation in which the law of conservation of mass is broken.
The questions from each group are shown below. Teachers are encouraged to view the questions in order to judge which activity is most appropriate for their classes. We recommend doing all three activities. 

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Flow Velocity

  
Volumetric Flow Rate and Velocity
 
Activity 1: Case Studies
Question Group 1
Question 1
Fluid in a pipe undergoes a sudden change from a wide cross-sectional area to a narrow cross-sectional area as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 
 
Question 2
Fluid in a pipe undergoes a sudden change from a wide cross-sectional area to a narrow cross-sectional area as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.

Question 3
Fluid in a pipe undergoes a sudden change from a wide cross-sectional area to a narrow cross-sectional area as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 
 
Question 4
Fluid in a pipe undergoes a sudden change from a wide cross-sectional area to a narrow cross-sectional area as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 

 
Question Group 2
Question 5
Fluid in a pipe undergoes a sudden change from an area with a large diameter (D) to an area with a small diameter (D) as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 
 
Question 6
Fluid in a pipe undergoes a sudden change from an area with a large diameter (D) to an area with a small diameter (D) as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 

 
Question 7
Fluid in a pipe undergoes a sudden change from an area with a large diameter (D) to an area with a small diameter (D) as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 
 
 
Question 8
Fluid in a pipe undergoes a sudden change from an area with a large diameter (D) to an area with a small diameter (D) as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 
 

 
Question Group 3
Question 9
Fluid in a pipe undergoes a sudden change from a narrow cross-sectional area to a wide cross-sectional area as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 
 
 
 
Question 10
Fluid in a pipe undergoes a sudden change from a narrow cross-sectional area to a wide cross-sectional area as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 

 
Question 11
Fluid in a pipe undergoes a sudden change from a narrow cross-sectional area to a wide cross-sectional area as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 
 
 
Question 12
Fluid in a pipe undergoes a sudden change from a narrow cross-sectional area to a wide cross-sectional area as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 
 
 

 
Question Group 4
Question 13
Fluid in a pipe undergoes a sudden change from an area with a small diameter (D) to an area with a large diameter (D) as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
The vB is ____________________ the vA.
 
 
 
 
Question 14
Fluid in a pipe undergoes a sudden change from an area with a small diameter (D) to an area with a large diameter (D) as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
 

 
Question 15
Fluid in a pipe undergoes a sudden change from an area with a small diameter (D) to an area with a large diameter (D) as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
 
 
 
Question 16
Fluid in a pipe undergoes a sudden change from an area with a small diameter (D) to an area with a large diameter (D) as it flows from location A to location B.
 
 
How does the volumetric flow rate (Q in m3/s) and the flow velocity (v in m/s) at B compare to that at A?
The QB is ____________________ the QA.
 
 
 
 
 

 
Activity 2: Ranking Tasks
Question Group 5
Question 17
Consider the three situations in which fluid in a pipe flows between regions with a different cross-sectional area (A). Rank the Vout values for the three situations.
 
 
 
Question 18
Consider the three situations in which fluid in a pipe flows between regions with a different cross-sectional area (A). Rank the Vout values for the three situations.
 
 
 

 
Question 19
Consider the three situations in which fluid in a pipe flows between regions with a different cross-sectional area (A). Rank the Vout values for the three situations.
 
 
 
Question 20
Consider the three situations in which fluid in a pipe flows between regions with a different cross-sectional area (A). Rank the Vout values for the three situations.
 
 
 

 
Question Group 6
Question 21
Consider the three situations in which fluid in a pipe flows between regions with different diameters (D). Rank the Vout values for the three situations.
 
 
 
Question 22
Consider the three situations in which fluid in a pipe flows between regions with different diameters (D). Rank the Vout values for the three situations.
 
 

 
Question 23
Consider the three situations in which fluid in a pipe flows between regions with different diameters (D). Rank the Vout values for the three situations.
 
 
 
Question 24
Consider the three situations in which fluid in a pipe flows between regions with different diameters (D). Rank the Vout values for the three situations.
 
 
 
 
 

 
Question Group 7
Question 25
Consider the three situations in which fluid in a pipe flows between regions with a different cross-sectional area (A). Rank the Vout values for the three situations.
 
 
 
Question 26
Consider the three situations in which fluid in a pipe flows between regions with a different cross-sectional area (A). Rank the Vout values for the three situations.
 
 
 

 
Question 27
Consider the three situations in which fluid in a pipe flows between regions with a different cross-sectional area (A). Rank the Vout values for the three situations.
 
 
 
Question 28
Consider the three situations in which fluid in a pipe flows between regions with a different cross-sectional area (A). Rank the Vout values for the three situations.
 
 
 

 
Question Group 8
Question 29
Consider the three situations in which fluid in a pipe flows between regions with different diameters (D). Rank the Vout values for the three situations.
 
 
 
Question 30
Consider the three situations in which fluid in a pipe flows between regions with different diameters (D). Rank the Vout values for the three situations.
 
 

 
Question 31
Consider the three situations in which fluid in a pipe flows between regions with different diameters (D). Rank the Vout values for the three situations.
 
 
 
Question 32
Consider the three situations in which fluid in a pipe flows between regions with different diameters (D). Rank the Vout values for the three situations.
 
 
 
 
 

 
Activity 3: Law Breakers
Question Group 9
Question 33
Fluid in a pipe flows from a narrow to a wide section. The cross-sectional areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.
 
 
 
Question 34
Fluid in a pipe flows from a narrow to a wide section. The cross-sectional areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.
 
 

 
Question 35
Fluid in a pipe flows from a narrow to a wide section. The cross-sectional areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.
 
 
 
 
Question Group 10
Question 36
Fluid in a pipe flows from a wide to a narrow section. The cross-sectional areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.
 
 

 
Question 37
Fluid in a pipe flows from a wide to a narrow section. The cross-sectional areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.
 
 
 
Question 38
Fluid in a pipe flows from a wide to a narrow section. The cross-sectional areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.
 
 
 
 

 
Question Group 11
Question 39
Fluid in a pipe flows between two sections with different cross-sectional areas. The areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.
 
 
 
Question 40
Fluid in a pipe flows between two sections with different cross-sectional areas. The areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.


 
Question 41
Fluid in a pipe flows between two sections with different cross-sectional areas. The areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.


 
Question Group 12
Question 42
Fluid in a pipe flows between two sections with different cross-sectional areas. The areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.


 
Question 43
Fluid in a pipe flows between two sections with different cross-sectional areas. The areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.
 
 
 
 
Question 44
Fluid in a pipe flows between two sections with different cross-sectional areas. The areas (A) and flow velocities (V) are listed. Identify all situations that violate the law of conservation of mass.