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Week 39: The microscope
Microscopy
1 / 27
suivant
Slide 1:
Diapositive
Biologie
Middelbare school
havo, vwo
Leerjaar 4
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Microscopy
Slide 1 - Diapositive
What are the parts of the microscope
How should you operate the microscope
The drawings rules for microscope drawings
learning goal
Slide 2 - Diapositive
Slide 3 - Vidéo
Slide 4 - Vidéo
1
Slide 5 - Vidéo
The biological drawing rules
white paper
use a hb pencil
make large drawings
draw clean cut lines, do not sketch
draw what you see
fill in the drawing information (name, class, date, name of organism, enlargement, view)
label parts: with a ruler, a horizontal line, name on the right side of paper, behind the line
Slide 6 - Diapositive
Slide 7 - Diapositive
Slide 8 - Diapositive
Slide 9 - Diapositive
How to make a waterweed specimen
What do you need:
slide,
coverslip,
tweezers,
pipette,
pencil
1. Take a slide and put a drop of water onto it.
2. Use the tweezers to pull off a leaf of waterweed and put it in the drop of water.
3. Slowly lower a coverslip on top of the waterweed in an angle.
Slide 10 - Diapositive
www.bioplek.org
Slide 11 - Lien
Slide 12 - Diapositive
The pointing needle.
Bring what you want to view very close to the tip of the pointing needle! Focus!
Slide 13 - Diapositive
03:19
Most of the rules in this video are the same as we discussed in class, but there are also some differences. State the differences you noticed.
Slide 14 - Question ouverte
The microscope
eyepiece lens = lens, magnifies 10x
tube = holds the eyepiece lens
revolver = holds the objective lenses, turns around
objective lenses = lenses hold by the revolver. Magnify 4x, 10x and 40x
stage = holds the slide
arm = used to hold the microscope when carrying
focus knob = lets you move the stage up and down. This helps you focus the image. There is a coarse and a fine knob.
lamp = source of light
condensor = lets you control the amount of light passing through the slide
base = this is the base the microscope stands on
Slide 15 - Diapositive
Through which part of the microscope do you look?
A
condensor
B
objective lens
C
eyepiece lens
D
revolver
Slide 16 - Quiz
revolver
objective lens
eyepiece lens
tube
turning piece that holds objective lenses
holds the eyepiece lens
lens, magnifies 10x
lens, magnifies 4x, 10x and 40x
Slide 17 - Question de remorquage
What is the function of the condensor?
A
magnify the object
B
control amount of light
C
to hold the microscope
D
turn microscope on/off
Slide 18 - Quiz
Which part lets you focus the image?
Slide 19 - Carte mentale
What is the use of the objective lenses?
A
magnify image
B
control amount of light
C
move the object up and down
D
sturdiness
Slide 20 - Quiz
base
focus knob
condensor
stage
objective lens
tube
Slide 21 - Question de remorquage
What are you no longer allowed to do once you switch form the red objective lens to one of the others?
A
make changes to the amount of light
B
turn the revolver
C
turn the coarse focus knob
D
turn the fine focus knob
Slide 22 - Quiz
What is part 2?
Slide 23 - Question ouverte
In what state should you hand in the microscope?
A
stage down, smallest objective lens above stage
B
stage up, smallest objective lens above stage
C
stage down, largest objective lens above stage
D
stage up, largest objective lens above stage
Slide 24 - Quiz
Make a plan of action on how to properly focus the microscope on your object. Take a picture of this list (on paper) and upload here
Slide 25 - Question ouverte
Summarise (on paper) the drawing rules for yourself and upload a picture of it below
Slide 26 - Question ouverte
We will have a microscope lesson soon.
You are allowed to use:
your plan of action for focussing the microscope.
your summary of the drawing rules
a pencil, eraser and ruler.
Slide 27 - Diapositive
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