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Course: Alhussan Physics — Stage 7
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Alhussan Physics — Stage 7

Chapter 1: Energy

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Chapter 2: Forces

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Chapter 3: Sound

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Chapter 4: Electricity

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Chapter 5: The Earth in Space

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Quiz

Physics 2.5 Planning fair tests: streamlining — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Which statement is correct?
Parachutes are streamlined.
Swimmers shave and wear smooth suits.
The slowest shape is the most streamlined.
Swimmers wear rough suits.
2.
Times 3.6, 3.5, 3.6 s. Mean (ignore the anomaly 4.4 s)?
3.77 s
10.70 s
35.67 s
3.57 s
3.
Which term matches this definition? “Rounded front and tapering tail.”
Teardrop shape
Direction of motion
Theory
Non-contact force
4.
In Kasini's investigation, what is the independent variable?
Time to fall
Shape of the object
Depth of water
Mass of object
5.
Time for plasticine shapes to fall through paste. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
6.
Which statement is correct?
Shape is the dependent variable.
Lorry cab deflectors reduce drag.
Penguins have square fronts.
A line graph suits shape data.
7.
Which is the correct definition of “Streamlined”?
Space with no air.
Shaped to reduce drag.
Falling with only gravity acting.
Greek thinker who said heavy objects fall faster.
8.
Which term matches this definition? “Shaped to reduce drag as it moves through air or water.”
Streamlined
Elastic
Dense
Brittle
9.
Which statement is correct?
Streamlining wastes fuel.
Fish, dolphins and birds are streamlined.
One drop is enough.
A line graph suits shape data.
10.
Times 3.5, 3.5, 3.6 s. Mean (ignore the anomaly 4.4 s)?
3.75 s
0.10 s
3.53 s
10.60 s
11.
Time for plasticine shapes to fall through paste. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
12.
Top speed of animals (km/h). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 3
A
B
C
D
13.
Which statement is NOT correct?
Penguins have square fronts.
A cone falls faster point first.
Shape is the independent variable.
The same material keeps density constant.
14.
Which is the correct definition of “Plasticine model”?
Every mass attracts every other mass.
Quantity with size and direction.
Shapes dropped through liquid to test streamlining.
Showed objects fall at the same rate without air resistance.
15.
Time for plasticine shapes to fall through paste. What is the value for Sphere?
Dr Dabour Hub Academy - figure 4
2.0
1.6
2.6
4.2
16.
Which term matches this definition? “Drag force from air opposing motion.”
Air resistance
Orbit
Non-contact force
Aristotle
17.
Time for plasticine shapes to fall through paste. What is the value for Teardrop?
Dr Dabour Hub Academy - figure 5
2.7
3.2
5.5
2.0
18.
A shape falls 40 cm in 3.6 s. Mean speed in cm/s?
43.6 cm/s
11.1 cm/s
144.0 cm/s
0.1 cm/s
19.
A shape falls 50 cm in 2.1 s. Mean speed in cm/s?
23.8 cm/s
238.1 cm/s
105.0 cm/s
52.1 cm/s
20.
Which statement is correct?
Streamlining wastes fuel.
Different masses keep it fair.
Parachutes are streamlined.
Shapes are dropped through a thick liquid to slow them.
21.
Which statement is NOT correct?
Penguins have rounded fronts and tapering tails.
A line graph suits shape data.
Streamlining saves fuel in vehicles.
Cyclists wear teardrop helmets.
22.
Repeat times for the cube (s). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 6
A
B
C
D
23.
Top speed of animals (km/h). Which has the smallest value?
Dr Dabour Hub Academy - figure 7
Sailfish
Human swimmer
Penguin
Dolphin
24.
Time for plasticine shapes to fall through paste. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
25.
Top speed of animals (km/h). What is the total of all the values?
Dr Dabour Hub Academy - figure 9
140
87
174
157
26.
Top speed of animals (km/h). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
27.
Top speed of animals (km/h). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 11
A
B
C
D
28.
Which is the correct definition of “Independent variable”?
Way an object is moving.
Simplified explanation of how something works.
Increases area to increase air resistance.
Shape of the object.
29.
Times 3.6, 3.5, 3.7 s. Mean (ignore the anomaly 4.4 s)?
3.60 s
3.80 s
10.80 s
0.10 s
30.
Which is the correct definition of “Mean”?
Simplified explanation of how something works.
Orbit matching Earth's rotation.
Average of repeat results.
Thick liquid used to slow falling shapes.
31.
Which statement is correct?
Penguins have square fronts.
Cyclists wear teardrop helmets.
Different masses keep it fair.
The slowest shape is the most streamlined.
32.
Which is the correct definition of “Teardrop shape”?
Weight per kilogram, g.
Weight equation.
Constant top speed when drag equals weight.
Rounded front and tapering tail.
33.
Times 3.6, 3.7, 3.6 s. Mean (ignore the anomaly 4.4 s)?
3.63 s
36.33 s
3.83 s
10.90 s
34.
Which is the correct definition of “Wallpaper paste”?
Thick liquid used to slow falling shapes.
Time to fall or travel.
Average of repeat results.
Equal and opposite forces.
35.
A shape falls 40 cm in 2.1 s. Mean speed in cm/s?
84.0 cm/s
19.0 cm/s
0.1 cm/s
42.1 cm/s
36.
Fuel fell from 35 to 31 L/100 km. Percentage saving?
12.9%
88.6%
4.0%
11.4%
37.
Cyclists wear ____ helmets.
round
teardrop
square
flat
38.
A cone falls ____ point first.
equally
slower
never
faster
39.
Shape is the ____ variable.
dependent
independent
control
random
40.
The same material keeps ____ constant.
name
price
colour only
density
41.
Swimmers shave and wear ____ suits.
baggy
rough
smooth
heavy
42.
True or false? Swimmers wear rough suits.
True
False
43.
True or false? Cyclists wear teardrop helmets.
True
False
44.
True or false? A teardrop shape falls faster through water than a flat disc of the same mass.
True
False
45.
True or false? Lorry cab deflectors reduce drag.
True
False
46.
True or false? Shape is the dependent variable.
True
False
47.
True or false? Fish, dolphins and birds are streamlined.
True
False
48.
True or false? Swimmers shave and wear smooth suits.
True
False
49.
True or false? Penguins have square fronts.
True
False
50.
True or false? The fastest shape is the most streamlined.
True
False
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Part of Chapter 2: Forces — see every lesson and quiz in this unit.
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