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Optics 5: Making Rainbows
Forces and Motion
Lesson 12.
Dispersion of Light
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Slide 1:
Slide
Physics
Secondary Education
Age 13
This lesson contains
31 slides
, with
interactive quizzes
,
text slides
and
2 videos
.
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Items in this lesson
Forces and Motion
Lesson 12.
Dispersion of Light
Slide 1 - Slide
How are you today?
😒
🙁
😐
🙂
😃
Slide 2 - Poll
Highlights of the Day
explain that white light is made of many colours and this can be shown through the dispersion of white light using a prism.
Values :
Responsibility and Determination
Slide 3 - Slide
Intro Questions
Slide 4 - Slide
Class Discussion
Do you ever see a rainbow at night?
Does the Sun have to be shining to enable you to see a rainbow?
Does there have to be rain or recent rain to enable you to see a rainbow?
What colours can you see in a rainbow?
Slide 5 - Slide
Do you ever see a rainbow at night?
YES
NO
Slide 6 - Poll
Does the Sun have to be shining to enable you to see a rainbow?
YES
NO
Slide 7 - Poll
Does there have to be rain or recent rain to enable you to see a rainbow?
YES
NO
Slide 8 - Poll
What colours can you see in a rainbow?
Slide 9 - Open question
Challenge Questions
Slide 10 - Slide
Slide 11 - Slide
Who was the scientist shown earlier?
A
Isaac Newton
B
Albert Einstein
C
Nikola Tesla
D
Bill Gates
Slide 12 - Quiz
In the year _____________ , Newton showed that white light could be split into different colours.
A
1666
B
1777
C
1888
D
1555
Slide 13 - Quiz
Slide 14 - Slide
Newton used light from the Sun, coming through a hole.
Newton used a
glass block
in the shape of a triangle to split the light into its colours.
He shone the colours onto a screen.
Slide 15 - Slide
From which source of light did Newton use in his experiment?
A
Moon
B
Sun
C
light bulb
D
lamp
Slide 16 - Quiz
What shape of glass block was used by Newton in his experiment?
A
spherical
B
rectangular
C
triangular
D
cylindrical
Slide 17 - Quiz
The range of colours that can be seen in
white light
is called a
spectrum
.
Slide 18 - Slide
In the spectrum, the colours are not separate but they
merge
from one to another.
Slide 19 - Slide
What is the name given to the range of colors that can be seen in white light?
A
rainbow
B
spectrum
C
light ray
D
incident ray
Slide 20 - Quiz
In the spectrum, what does the colours of light do to make visible white light back?
A
combine
B
separate
C
reflect
D
refract
Slide 21 - Quiz
Slide 22 - Slide
What acronym will you use to remember the 7 colours of the visible white light spectrum?
Slide 23 - Open question
Forces and Motion
Lesson 12.
Dispersion of Light
Slide 24 - Slide
Slide 25 - Slide
Triangular prism
Slide 26 - Slide
A ______________ is a solid shape such as the one that Newton used.
A
mirror
B
prism
C
metal
D
surface
Slide 27 - Quiz
Dispersion means splitting light into different
c
o
l
o
u
r
s
.
Dispersion happens because
light is
refracted
.
Each of the different colours of light that make up white light is refracted through a
slightly different angle.
Slide 28 - Slide
Slide 29 - Video
Slide 30 - Video
Self-survey: Rate your level of understanding and participation in this lesson.
1
5
Slide 31 - Poll
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