In deze les zitten 23 slides, met interactieve quizzen en tekstslides.
Lesduur is: 50 min
Onderdelen in deze les
Introduction and seeing colour
(p. 10)
Bluetooth
- On
Stationary
- Books
- Pen and pencil
- iPad
Report
- NO
Lessonup
- Yes
Bags in
the cuboard
Phones in the phone holder
Slide 1 - Tekstslide
Lessonup class code
G2X - erctu
A2X - gcmyd
Slide 2 - Tekstslide
Lesson goals:
General discussion of class rules
Which colours do we find in the rainbow
Which light sources emit
the whole spectrum of light
Explain how we see coloured
object
Slide 3 - Tekstslide
Homework: Pin-hole camera
Activity 10 (p. 31)
To be done in
three weeks time
Slide 4 - Tekstslide
Rules
We respect each other
We keep the class clean
We do our best
Slide 5 - Tekstslide
What do you need in the class:
Writing book, A4 blocks, for every lesson. Bring it even if you are writing a test.
It is wise to have a file in which you keep your tests. Alternatively you can make a photo of the front page with your mark. If there are enquiries you always have it with you.
Slide 6 - Tekstslide
CALCULATOR, a Casio!! You are not allowed to use your mobile phone or your tablet as calculator because you must learn how to use your own calculator in the class.
Stationary such as a pen, pencil and ruler.
Sometimes you might need a protractor or a compass, so have it with you.
Slide 7 - Tekstslide
Work neatly
Start a new lesson with a heading and a date in your writing book, and end each lesson by ruling off.
Write neatly with a blue or a black pen, and always make diagrams and drawings with a pencil.
You will be awarded a mark on your report for your book, so keep it neat, and do your work in it.
Slide 8 - Tekstslide
Activity 2 (p. 18)
also, write the coulours of the rainbow
Slide 9 - Tekstslide
Rainbow
A rainbow occurs because
raindrops break up the light
of the sun into its different
colours
Colours of the rainbow:
• Red • Orange • Yellow • Green • Blue • Violet
Slide 10 - Tekstslide
Colour spectrum
Band of colours where all the coulours of the rainbow are next to each other.
Slide 11 - Tekstslide
Light source
Something that gives off
its own light
Slide 12 - Tekstslide
How do we see colours?
- A blue object only reflect blue
light and absorbs all the other
colours
- A white object reflects all the
colours
- A black object absorbs all the
colours
Slide 13 - Tekstslide
Houses in warm countries
In warm countries houses are usually painted in light colours, because that reflects more
light, and therefore more
energy. This way the house
stays nice and cool inside.
Slide 14 - Tekstslide
In the rainbow you see all the known colors
A
True
B
False
Slide 15 - Quizvraag
The rainbow consists of 6 colours.
A
True
B
False
Slide 16 - Quizvraag
A red object absorbs red light.
A
True
B
False
Slide 17 - Quizvraag
A white object reflects all the light.
A
True
B
False
Slide 18 - Quizvraag
Which colour does not belong to the 6 colors of the rainbow?
A
Red
B
Green
C
Purple
D
Violet
Slide 19 - Quizvraag
Which is NOT a light source?
A
Sun
B
Moon
C
Halogen lamp (on)
D
UV lamp (on)
Slide 20 - Quizvraag
Explain in your own words why we see colours.
Slide 21 - Open vraag
Do the following questions:
2 to 8 p. 12
In your writingbook
Rules:
- 10 minutes
- No talking
Finished early: Research light of street lanterns on the web
timer
10:00
Slide 22 - Tekstslide
In a nutshell:
The colours of the rainbow are
red, orange, yellow, green, blue, violet.
Light sources such as the sun emmit a continuous spectrum, and led-lamps and fluorescent tubes only certain colours.
We see colours because certain colours are reflected and others are absorbed.