Grade 7 - Science

1. The Microscope andIts
Historical Development

3. Plant Cell

4. Blood

5. Animal Cell

6. Historical Development of the
MICROSCOPE

7. Readin
g Stone

8. Salvino
D’Armate
1st wearable
eyeglasses

9. Multiple
Lens Tube
Zaccharias
Janssen
Hans
Janssen

10. Robert
Hooke
Micro
scope
Lens
Observed
Pores
/
Cells

11. Anton van
Leeuwenhoek
Simple
Microscope
Blood,
yeast,
insects

12. What is
MAGNIFICATION?

13. What is RESOLUTION?

14. RESOLUTION

15. SPECIMEN
objects being studied under the
microscope

16. PARTS AND
FUNCTIONS OF A
COMPOUND LIGHT
MICROSCOPE (CLM)

17. Puzzle
EECIPEEY

18. Puzzle
NEFITUATEDDNSMJKNOB

19. Puzzle
MAR

20. Puzzle
BESA

21. Puzzle
TVBEIJECO

22. Puzzle
VOGVELNIR PESNIECEO

23. Puzzle
TSGAE

24. Puzzle
ROIMMR

26. EYE PIECE
It isusedto see the
objects under study.]
Usually 10 X or 15 X
magnification.

27. DRAW TUBE
Reflects light up to the
viewers eye.
It connects the eyepiece
to the objective lenses

28. REVOLVING NOSE
PIECE/TURRET
It allows the rotation
of the lenses while
viewing.

29. OBJECTIVES
LPO- 10X magnification
HPO- 40X magnification
OIL IMMERSION- 100X magnification
SCANNING-4X magnification

30. STAGE
The platform that is
used for placing the
slides under
observation

31. STAGE CLIPS
Used to keep the slide
in place

32. DIAPHRAGM
Helps in controlling
the amount of light
that is passing through
the opening of the
stage.

33. LIGHT SOURCE/
ILLUMINATOR
A steady light source (110 volts)
used in place of a mirror.
If the microscope has a mirror, it is
used to reflect lightfrom an
externallight source up through
thebottom of the stage.

34. ARM
Supports the tubeof
the microscope and
connects to the base
of the microscope

35. COARSEADJUSTMENT
KNOB/COARSE FOCUS
Used for focus on
scanning.Usually the
low power lens is used
enabling the
movement of thetube.

36. FINE ADJUSTMENT
Moves the body
tube for focusing
the high power lens.

37. COARSEADJUSTMENTKNOB andFINE
ADJUSTMENTKNOB

38. BASE
Provides basal support
for the microscope

39. SUMMARY

40. SUMMARY

41. EXERCISE: Label the parts of the microscope

42. ProperProcedures
1. Carry the microscope with one
hand under the base while
grasping the armwith the other
hand
2. Place microscope ~5 inches from
the edgeofthe table
Be carefulofthe cord when moving
aroundthe lab tables!!

43. ProperProcedures
3. Rotate the nosepiece to obtain
the proper objective lens
Make sure the lens clicksinto
place!!
4. Look through the eyepiece and
switch on the lamp
This is your field of view!

44. ProperProcedures
5. Place slide on stage, center
specimen over stage
6. Locate specimen on low power
using coarse adjustment
7. Carefully switch to medium or high
power
8. Focus image with fine adjustment
Avoid damaging slide!
Do notuse course adjustment with high power!

45. Storing theMicroscope
1. the 10X objective is in place
2. the stage is allthe way down
3. the power isoff
4. the cord is wrapped around
the base
Four steps prepare themicroscopefor storage: