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Course: Alhussan Physics — Stage 8
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Alhussan Physics — Stage 8

Chapter 6: Forces, Motion and Pressure

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Chapter 7: Light

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Chapter 8: Magnetism and Electromagnets

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Chapter 9: Energy Resources

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Chapter 10: The Earth in Space (Galaxies and Asteroids)

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Quiz

Physics 7.7 Dispersion — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
2 of 25 rainbows were double rainbows. Percentage?
23%
80%
92%
8%
2.
Width of spectrum on a screen at distances. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
3.
True or false? White light is a mixture of colours.
True
False
4.
Width of spectrum on a screen at distances. At what value of "Distance from prism (cm)" is "Spectrum width (cm)" smallest?
Dr Dabour Hub Academy - figure 2
40
20
50
10
5.
The spectrum has ____ named colours.
three
two
seven
ten
6.
Which term matches this definition? “Mixture of all colours.”
White light
Secondary colours
Magenta
Camouflage
7.
True or false? To see a rainbow the Sun must be behind you.
True
False
8.
Wavelength of colours (nm). Which has the greatest value?
Dr Dabour Hub Academy - figure 3
Red
Yellow
Green
Orange
9.
Convert 400 nm to m (× 10⁻⁹). Give the answer in units of 10⁻⁷ m.
40,000 × 10⁻⁷ m
40 × 10⁻⁷ m
400 × 10⁻⁷ m
4 × 10⁻⁷ m
10.
Which colour is refracted the most by a prism?
Green
Yellow
Red
Violet
11.
Rainbows seen per month in a town. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 4
A
B
C
D
12.
Which statement is correct?
White light is a single colour.
White light through a rectangular block stays white.
The spectrum has three colours.
A spinning colour wheel looks black.
13.
True or false? Red light bends most.
True
False
14.
In a vacuum all colours travel at the ____ speed.
zero
random
same
different
15.
Rainbows seen per month in a town. About how many times bigger is May than Jan?
Dr Dabour Hub Academy - figure 5
4.5
3.0
6.0
1.5
16.
Rainbows seen per month in a town. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 6
A
B
C
D
17.
True or false? A prism splits white light into colours.
True
False
18.
Amount of bending of colours in a prism (°). What is the total of all the values?
Dr Dabour Hub Academy - figure 7
42.1
208.7
233.0
257.3
19.
Which statement is correct?
A rectangular block splits white light visibly.
Prisms add colour to light.
A prism splits white light into colours.
Rainbows need the Sun in front of you.
20.
Which statement is correct?
A rectangular block splits white light visibly.
Red is at the top of a rainbow.
Violet is at the top of a rainbow.
Violet has the longest wavelength.
21.
Amount of bending of colours in a prism (°). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
22.
True or false? Diamonds show colour flashes due to dispersion.
True
False
23.
Which statement is NOT correct?
Rainbows form when sunlight is dispersed by raindrops.
Colours travel at different speeds in a vacuum.
White light through a rectangular block stays white.
The order is red, orange, yellow, green, blue, indigo and violet.
24.
Rainbows seen per month in a town. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 9
A
B
C
D
25.
True or false? Rainbows need the Sun in front of you.
True
False
26.
Rainbows seen per month in a town. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 10
A
B
C
D
27.
Width of spectrum on a screen at distances. At what value of "Distance from prism (cm)" is "Spectrum width (cm)" greatest?
Dr Dabour Hub Academy - figure 11
10
50
30
20
28.
Red light is slowed the ____ in glass.
most
least
same
never
29.
Rainbows form when sunlight is dispersed by ____.
clouds only
raindrops
dust
snow
30.
Convert 700 nm to m (× 10⁻⁹). Give the answer in units of 10⁻⁷ m.
7 × 10⁻⁷ m
70,000 × 10⁻⁷ m
700 × 10⁻⁷ m
70 × 10⁻⁷ m
31.
True or false? In a vacuum all colours travel at the same speed.
True
False
32.
Spectrum width doubles when distance doubles. 1.2 cm at 20 cm; width at 30 cm?
1.8 cm
2.4 cm
1.2 cm
0.8 cm
33.
Width of spectrum on a screen at distances. What is the value of "Spectrum width (cm)" when "Distance from prism (cm)" is 50?
Dr Dabour Hub Academy - figure 12
0.6
3.0
1.2
1.8
34.
Rainbows seen per month in a town. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
35.
Convert 600 nm to m (× 10⁻⁹). Give the answer in units of 10⁻⁷ m.
6 × 10⁻⁷ m
60 × 10⁻⁷ m
600 × 10⁻⁷ m
60,000 × 10⁻⁷ m
36.
Violet bends 41.0° and red 38.0°. Difference?
79.0°
3.0°
41.0°
38.0°
37.
What is the order of colours in the spectrum?
Red, orange, yellow, green, blue, indigo, violet
Green, red, violet, orange
Blue, red, yellow, green
Violet, red, green, blue
38.
Which term matches this definition? “Colour bent most by a prism.”
Newton
White light
Camouflage
Violet
39.
True or false? Newton showed a second prism can recombine the colours.
True
False
40.
To see a rainbow the Sun must be ____ you.
behind
in front of
below
above
41.
Which statement is NOT correct?
Dispersion happens because colours refract differently.
The order is red, orange, yellow, green, blue, indigo and violet.
Colours in white light differ in wavelength.
White light is a single colour.
42.
True or false? The spectrum has three colours.
True
False
43.
CDs show colours due to ____.
heat
magnetism
splitting light
sound
44.
The order is red, orange, yellow, green, blue, indigo and ____.
brown
black
violet
white
45.
Newton showed a second prism can ____ the colours.
darken
destroy
freeze
recombine
46.
Which statement is correct?
Rainbows need the Sun in front of you.
A spinning colour wheel looks black.
A normal bulb looks white but white light is a mixture.
Violet has the longest wavelength.
47.
Rainbows seen per month in a town. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 14
A
B
C
D
48.
Rainbows seen per month in a town. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 15
A
B
C
D
49.
True or false? Violet has the longest wavelength.
True
False
50.
Splitting light is called ____.
diffusion
absorption
dispersion
reflection
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Part of Chapter 7: Light — see every lesson and quiz in this unit.
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