1. Aim: Microscope Parts … YEAH!!
Enter Date
Aim: Microscope Parts … YEAH!!
Warm-up:
Write a hypothesis for the statement …
Chocolate may cause pimples
HW:

2. Microscope Terms Magnification How LARGE an image is Resolution
How sharp or clear the image is
Fine adjustment aids in this

3. Base Body Tube Nosepiece Eye Piece Arm Low Power Stage High Power
Stage Clips
Coarse Adjustment
Diaphragm
Fine Adjustment
Light Source
Base

4. Compound-light Microscope
2 sets of lenses  eyepiece & objective
Specimens must be thin & often dead
Image is upside-down & backwards
e  ə

5. Moving Objective Under the Microscope
To center objects you need to realize that everything is REVERSED
NEED to move it to the LEFT

6. In which direction should the slide be moved to center the cell?
To the right & up
2) To the right and down
3) To the left and up
4) To the left and down

7. Cheek Cells
Red Blood Cells
with Cholesterol

8. Paramecium
Pollen Grains

11. Clockwise from top left: an ant, passion fruit pollen, a  freshwater shrimp parasite, sunflower pollen and central, a green bottle foot.

12. Microscope Measurement
1. Total Magnification
Eyepiece x Objective
100X
Ex: 1: 10 x 10 =
Ex. 2: 10 x 43 =
430X

13. 2. Micrometer/Micron (μm)
Unit of measurement used with the microscope
1 mm = 1000 um

14. mm  um Move decimal 3 places to right or Multiply by 1000 5,000 um
Ex. 1: 5 mm = ? um
Ex. 2: 1.5 mm = ? um
1,500 um

15. um  mm Move decimal 3 places to left or Divide by 1000 0.008 mm
Ex. 1: 8 um = ? mm
Ex. 2: 2.5 um = ? mm mm

16. About how many um are each cell?
2mm = 2000 um
= 400 um/cell
5 cells

17. What is the approximate diameter of the cell shown in the low-power field?
100 um
2) 500 um
3) 800 um
4) 1,000 um
1000 um
1mm = 1000 um
= 500 um/cell
2 cells

18. 3. Changing from Power to Power
Low Power  Bigger field of view
 See more cells, but in
less detail
 Brighter
High Power  Smaller field of view
 See less cells, but in
more detail
 Darker

19. Low Power: 40X

20. High Power: 400X

21. Low Power: 40X

22. High Power: 400X