5.3 vision

5.3 vision
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Slide 1: Diapositive
BiologieMiddelbare schoolvwoLeerjaar 1

Cette leçon contient 39 diapositives, avec quiz interactifs et diapositives de texte.

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5.3 vision

Slide 1 - Diapositive

First: Read par 5.3
then make this lesson up

Slide 2 - Diapositive

The eye
Notes
  • Eyebrow (wenkbrauw): Protects the eye against sweat and other liquids (vloeistoffen)
  • Eyelashes (wimpers): protects the eye against dirt and bright light
  • Sclera (harde oogvlies): white of the eye. The eye muscles are attached to the sclera
  • Pupil: The pupil lets light into the eye.





Slide 3 - Diapositive

Slide 4 - Diapositive

Pupil reflex
Pupil gets smaller in bright light
Pupil gets larger in dim light

Slide 5 - Diapositive

Slide 6 - Diapositive

What do we
call this reflex?
A
Light reflex
B
Iris reflex
C
Pupil reflex
D
Light protection

Slide 7 - Quiz

When it is dark
A
The iris is large and the pupil is small
B
The iris is large and the pupil is large
C
The iris is small and the pupil is mall
D
The iris is large and the pupil is large

Slide 8 - Quiz

In bright light
A
circular muscles are contracted
B
circular muscels are relaxed
C
radia muscles are contracted
D
radial muscles are relaxed

Slide 9 - Quiz

Do this experiment toghether with you neighbour:
Keep both eyes open and place a hand before one of you eyes. Do this for 30 seconds. Then remove your hand. What happens with the pupil of your eyes. Explain your answer

Slide 10 - Question ouverte

Slide 11 - Diapositive

Slide 12 - Lien

iris
retina
sclera
cornea
pupil
optic nerve
lens

Slide 13 - Question de remorquage

retina
Cones are for: Color (red / blue / green)
Rods are for: Light (black / white)

Slide 14 - Diapositive

retina
cones work well in bright light
rods function in dim light
the fovea is the most sensitive part (lots of cones)

Slide 15 - Diapositive

Rods- Cones

Rods : Black and white/ unsharp image
Cones: colour/sharp 

fig 5.7 in book

Slide 16 - Diapositive

retina

Slide 17 - Diapositive

retina

Slide 18 - Diapositive

Slide 19 - Diapositive

blind spot/optic nerve

Slide 20 - Diapositive

What part of the lens focuses the light rays
A
Lens
B
Pupil
C
Retina
D
Cornea

Slide 21 - Quiz

What is the biggest part of the eye
A
Rods
B
Lens
C
Vitreous body
D
Cornea

Slide 22 - Quiz

How do we see çolour
A
Rods
B
Cones
C
Lens
D
Cornea

Slide 23 - Quiz

Where can you find the highest amount of cones
A
Blind spot
B
Fovea
C
Optic nerve
D
Iris

Slide 24 - Quiz

In dim light the ...... are making an image.
What should be on the .....
A
Cones
B
Rods

Slide 25 - Quiz

Whe you use your rods the image is in .......
A
Black and white
B
Colour

Slide 26 - Quiz

When the image hits the retina, the image is upside down. What flips the image over so that it is right-side up
A
Lens
B
Retina
C
optic nerve
D
Brain

Slide 27 - Quiz

Slide 28 - Lien

Slide 29 - Lien

Do experiments from your workbook
Exc 16
Exc 17
Exc 18
Exc 19

Slide 30 - Diapositive

(-) minus lenses
(+) plus lenses

Slide 31 - Diapositive

Short sighted: you can see clearly objects that are close by

Slide 32 - Diapositive

Long sighted: you can see clearly objects far away

Slide 33 - Diapositive

glasses
- short - sightedness: you can’t see sharp in the distance, you need - (concave) glasses, your eye is too long, or your lenze can’t flatten enough
- long - sightedness: you can’t see sharp up close, you need + (convex) glasses, your eye is too short, or your lenze can’t contract enough

Slide 34 - Diapositive

Peter has problems reading his book, he only sees a blurred line. Peter has no problems looking in the distanceThis means that his lens is
A
to thick so the light is broken to much
B
to thick so the light is not broken to enough
C
to thin so the light is broken to much
D
to thin so the light is not broken to enough

Slide 35 - Quiz

This condition Peter has is called
A
short- sighted
B
long-sighted

Slide 36 - Quiz

Peter needs glasses with ......
A
A convex lens
B
A concave lens

Slide 37 - Quiz

When people get older they often have problems reading a book. They need glasses with a convex lens. Can you explain this

Slide 38 - Question ouverte

vocabulary?
read the paragraph 5.3 again and write down difficult words
or ask the teacher for assitance if you dont understand everything

Slide 39 - Diapositive